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These are the asteroids to worry about

  • These are the asteroids to worry about


    Stephen Hawking thought an asteroid impact posed the greatest threat to life on Earth. Thanks to Kiwico for sponsoring this video. For 50% off your first month of any crate, go to
    For other potential world ending catastrophes, check out Domain of Science:

    Special thanks to:
    Prof. Dave Jewitt from UCLA Earth, Planetary, and Space Sciences
    Prof. Mark Boslough from Sandia National Labs
    Scott Manley:
    Ryan Wyatt at Morrison Planetarium
    Prof. Amy Mainzer
    Alexandr Ivanov for the opening shot of Chelyabinsk Meteor

    Maps of Asteroid Impacts —

    Time passing animation from Universe Sandbox -

    Opposition Effect —
    Belskaya, I. N., & Shevchenko, V. G. (2000). Opposition effect of asteroids. Icarus, 147(1), 94-105.

    Potentially Hazardous Asteroids —
    Perna, D., Barucci, M. A., & Fulchignoni, M. (2013). The near-Earth objects and their potential threat to our planet. The Astronomy and Astrophysics Review, 21(1), 65.

    Survey of Potentially Hazardous Asteroids —

    Population Vulnerability —
    Rumpf, C. M., Lewis, H. G., & Atkinson, P. M. (2017). Population vulnerability models for asteroid impact risk assessment. Meteoritics & Planetary Science, 52(6), 1082-1102.

    Size distribution of NEOs —
    Trilling, D. E., Valdes, F., Allen, L., James, D., Fuentes, C., Herrera, D., ... & Rajagopal, J. (2017). The size distribution of near-earth objects larger than 10 m. The Astronomical Journal, 154(4), 170.

    2020 NEOWISE Data Release —

    National Research Council Report—
    Board, S. S., & National Research Council. (2010). Defending planet earth: Near-Earth-Object surveys and hazard mitigation strategies. National Academies Press.

    Tug Boat —
    Schweickart, R. L., Lu, E. T., Hut, P., & Chapman, C. R. (2003). The asteroid tugboat. Scientific American, 289(5), 54-61.

    Gravity Tractor 1 —
    Lu, E. T., & Love, S. G. (2005). Gravitational tractor for towing asteroids. Nature, 438(7065), 177-178.

    Laser Ablation —
    Thiry, N., & Vasile, M. (2014). Recent advances in laser ablation modelling for asteroid deflection methods. SPIE Optical Engineering+ Applications, 922608-922608.

    Yarakovsky Effect —

    DART Mission —

    Nuclear 1 —
    Ahrens, T. J., & Harris, A. W. (1992). Deflection and fragmentation of near-Earth asteroids. Nature, 360(6403), 429-433.

    Nuclear 2 —
    Bradley, P. A., Plesko, C. S., Clement, R. R., Conlon, L. M., Weaver, R. P., Guzik, J. A., ... & Huebner, W. F. (2010, January). Challenges of deflecting an asteroid or comet nucleus with a nuclear burst. In AIP Conference Proceedings (Vol. 1208, No. 1, pp. 430-437). American Institute of Physics.

    Researched and Written by Petr Lebedev, Jonny Hyman and Derek Muller
    3D animations, VFX, SFX, Audio Mixing by Jonny Hyman
    2D animation by Ivàn Tello
    Intro animation by Nicolas Pratt
    With Filming by Raquel Nuno

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    Images and video supplied by Getty Images

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  • ASTEROIDS Size Comparison ????


    Hello everyone, today I bring you an impressive video of asteroid sizes, only some of them of course. You will see its enormous size compared to New York City, it is something awesome!

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    Disclaimer The 433 Eros shape is not correct. It should be a long asteroid, not so spherical.


    ????Music: Future Gladiator - Kevin MacLeod

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  • 5 Horrible Asteroids in Direction to Earth And Its Date Of Collision.


    Asteroids, those dangerous objects capable of wiping out the entire civilizations, are found in millions in space.
    Most of them revolve around the solar system, mainly between the orbits of Mars and Jupiter.
    But the frightening thing is that according to different data collected by science, there are a number of asteroids that are approaching the earth and some of them even have a date for their collision with our planet.
    Get ready, because this time, we will review some asteroids that are in the direction of the earth and their possible date of collision.

    Before we start, we don't want to alarm you, as many asteroids have passed through the earth throughout history and have rarely posed a threat to the planet. Although some of the asteroids listed below have an impact date, this is not accurate, as many of them change their trajectory over the years.

    Knowing this, let's get started.

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  • Elon Musk Is Mining A Golden Asteroid Worth $700 Quintillion


    Giant Golden Asteroid Could Make Everyone On Earth a Billionaire
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    Out there in space, right now above our heads, is a wealth of knowledge. And in this case, we mean that literally. Believe it or not, in our very solar system, there is an asteroid that is thought to be the remnants of a planet core. And that means that all those pricey metals that we have to dig for here on Earth, are exposed, and ripe for the taking. Estimates put this giant space faring gold mine at 10,000 quadrillion dollars, and who knows, if we can get up there to explore it up close, we may find that it is worth even more. What would this do to our economy? Just how rich would this make everyone on earth if it was split evenly? Are there any missions planned to get up there? Oh, we got your answers right here. In today’s video we are getting scientific, while making sure to not skimp out on the riches, so we can give you the scoop on this nearby, giant, golden asteroid. If it piques your interest, you’re not alone. None other than Elon Musk has made comments about his thoughts on mining this bad boy, and considering SpaceX will be the company that supports NASA in this quest, you better believe it’s something we should all take seriously. It would bring all new meaning to the phrase, the rich only get richer. So sit back, relax, and get ready to countdown from ten, as we fire all the thrusters and blast off into the final frontier to give you the scoop on the absurd amount of gold floating around in our solar system.

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  • NASA’s Plan to Stop an Asteroid Headed for Earth


    Like this video about how NASA is preparing to stop an asteroid headed for earth, and subscribe here:

    Watch the next video in our series on Guardians of the Apocalypse:

    Estimates say that a vehicle-sized asteroid explodes in our atmosphere about once per year, often too high to make a noticeable impact.

    But in 2013, a small meteor exploded just 20 miles above Chelyabinsk, Russia that sent over 1,200 people to the hospital.

    Today, a team of experts from NASA’s Planetary Defense Coordination Office works diligently to find asteroids that travel near Earth’s orbit.

    They’ve released a plan in order to prevent a large-scale asteroid impact, and part of this plan is the DART mission.

    DART aims to travel to the asteroid Didymos in 2021 to demonstrate the tech that could be used to redirect an asteroid headed for Earth.

    It's a collaboration with the European Space Agency (ESA), whose Hera spacecraft will follow up and observe the results of the impact on the asteroid and map Didymos's surface and interior structure.

    See the full article on NASA's plans to stop an asteroid headed for earth, here:

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  • An Extinction Level Asteroid Impact With Neil deGrasse Tyson


    An extinction level event from an asteroid impact is among the most common cause of extinction for many species in the history of life on Earth. Neil deGrasse Tyson explains in detail the possibility of an asteroid impact from the asteroid named Apophis after the ancient Egyptian deity who embodied chaos, its estimated diameter is between 1,115 and 1,214 feet. Additional observations cleared up the concern of a direct impact. Apophis is expected to pass close to Earth in 2029, 2036 and again in 2068.

    Neil deGrasse Tyson explains the details if Apophis were to hit near the coastline of North America.

    Asteroids are rocky fragments left over from the formation of the solar system about 4.6 billion years ago. Most of the asteroids orbit between Jupiter and Mars, where the Jupiter's gravity prevents them from ever combining into a larger body.

    There are, however, asteroids and comets that have been nudged by the gravitational attraction of nearby planets into orbits that allow them to enter the Earth's neighbourhood. These are called Near Earth objects or NEOs.

    NEOs are not yet well understood; they have only been tracked for a few years, and their orbits are usually very uncertain. It is difficult to predict how close an object will come to Earth, or where it will hit.

    An asteroid impact on Earth could have catastrophic consequences depending on the composition of the asteroid and the location of impact. An asteroid is likely to make a crater upon impact with Earth, causing massive destruction within a radius of hundreds of miles. This crater is likely to be hazardous for some time following the impact. Moreover, a major asteroid collision could cause general disruption to climate and weather systems on Earth.

    At the end of the Cretaceous Period, 65 million years ago, an asteroid hit Earth in the Yucatan Peninsula, Mexico, forming what is today called the Chicxulub impact crater. This impact caused a mass extinction in which 75% of plant and animal species on Earth became extinct, including all non-avian dinosaurs.

    According to Neal DeGrasse Tyson, If an asteroid is found to be on a collision course with Earth, instead of trying to blow it up, the main goal would be to nudge it out of its path, avoiding an unpleasant end to civilization.

    #asteroid #neiltyson #science

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  • Moon is Getting Hit By Asteroid or Meteor ? | Is it Real or Fake?


    A meteorite smashed into the moon's surface at 38,000 miles per hour (61,000 kilometers per hour) while our lunar neighbor was in total eclipse in January, a new report reveals.

    Observers saw a flash during the Jan. 20 to 21 eclipse, when the object collided with the moon and carved out a crater about 10 to 15 meters (33 to 50 feet) in diameter. It was traveling fast enough to have been able to cross the United States in just a few minutes, but, luckily for Earth, it slammed into the #moon instead.
    #Maniverse #moonimpact

    Clips: Pixabay, NASA, ESA, JPL, Shutterstock

    Copyright Disclaimer under section 107 of theCopyright Act of 1976, allowance is made for “fair use” for purposes such as criticism, comment, news reporting, teaching, scholarship, education and research. Fair use is a use permitted bycopyright statute that might otherwise be infringing.

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  • TOP 15 BIGGEST Asteroid Impacts in History


    The meteor that wiped out the dinosaurs, wasn't the only large scale impact in history. Today we'll take a look at some of the biggest asteroid impacts in Earth history!

    Several segments are licensed under creative commons

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  • An asteroid is on possible collision course with Earth this November: Should we be worried?


    An asteroid is on possible collision course with Earth this November: Should we be worried?

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  • A Gigantic Asteroid Is Headed Our Way! Will It Hit Earth In 2021?


    Apophis, the most infamous asteroid in history, is coming for a visit. There are millions of asteroids lurking in the solar system. About 66 million years ago, a 10-km wide asteroid struck the Earth and wiped out the dinosaurs. This caused the Cretaceous-Paleogene mass extinction. It was the fifth and the latest mass extinction event in the history of Earth. Since these rocky objects can cause disasters on our planet, tracking them is an important thing to do.

    Scientists have been tracking a 1000-feet wide asteroid called Apophis. Like all near-Earth asteroids, it has been rattling around the inner solar system for millennia. And now it is coming for a visit on March 5, 2021. The initial observations had indicated that Apophis would hit Earth or the Moon on April 13, 2029. According to calculations, the probability for such an impact to occur is 2.7%. Mathematics shows the highest probability of impact on April 12, 2068!

    Since its discovery, optical and radio telescopes have been tracking Apophis as it is orbiting the sun. In its 2029 flyby, the asteroid will come within 19,800 miles of the Earth. This is close enough to come between the Earth and moon, 240,000 miles apart. In 2021, Apophis will be more than 40 times as distant as the moon is from Earth. To capture the rock's sharpest echoes, scientists are relying on two of their best telescopes. The first is the Goldstone Deep Space Communications Complex in California. The second is the Green Bank Telescope in West Virginia.
    The data obtained will eventually set up the stage to deal with the 2029 flyby. So Apophis's March 2021 flyby is definitely something worth looking up to!

  • How Asteroids Really Killed The Dinosaurs - Part 2 | Last Day Of The Dinosaurs


    Did you know that if the asteroid that wiped out the dinosaurs from the face of the Earth would have hit another location, they may still be alive? The shallow waters of the Gulf Of Mexico instantly vaporized as the asteroid hit, causing absolute destruction. This was the Last Day Of The Dinosaurs.

    Asteroid Day is celebrated every year on the 30th of June.

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  • Will An Asteroid Decimate The Earth? | Final Target | Spark


    This documentary takes a look at the present efforts and problems associated with the location and observation of possible life-threatening comets and asteroids, as well as plans to avoid collisions.

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    #Spark #Asteroids #Comets

  • What If The Largest Asteroid Hit Earth?


    #eldddir #eldddir_space #eldddir_disaster #eldddir_earth

  • If You Could See All The Asteroids, What Would The Sky Look Like?


    My first attempt at a 360 video! I took all the asteroids near the Earth, calculate their positions and place them on a virtual Sky sphere. You can pan the view around, use a smartphone or tablet as a virtual window, or a Cardboard compatible viewer to see this the way it's intended.

    Please sign the asteroid day declaration!

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    Music is Lost Frontier by Kevin Macleod

  • Defending Earth from Asteroids with Neil deGrasse Tyson


    There are about a million near-Earth asteroids that are large enough to substantially damage or destroy a major city, as evidenced by the explosion over Chelyabinsk, Russia, in February 2013 of a meteor no bigger than a large truck, which injured more than 1,000 people.

    With current space technology, scientists know how to deflect the majority of hazardous near-Earth objects. But prevention is only possible if nations work together on detection and deflection. Learn about the risks, and the steps that are needed to avoid these potential natural disasters, from a group of astronauts and cosmonauts who recently helped develop recommendations to the United Nations for defending Earth from asteroid impact in this discussion.

    This program, which was streamed live on the web, took place at the American Museum of Natural History on October 25, 2013, the same week the United Nations General Assembly adopted measures creating an international decision-making mechanism for planetary asteroid defense. The event was co-hosted by the American Museum of Natural History and the Association of Space Explorers (ASE).

    Neil deGrasse Tyson, who is the Frederick P. Rose Director of the Hayden Planetarium, hosted the discussion with participants Thomas Jones, former NASA astronaut, senior research scientist at the Florida Institute for Human and Machine Cognition, and Association of Space Explorers (ASE) Near Earth Objects Committee member; Russell Schweickart, former NASA astronaut, ASE co-founder and Near Earth Objects Committee member, and co-founder and chairman emeritus of the B612 Foundation; Dumitru-Dorin Prunariu, former Romanian astronaut, ASE co-founder and Near Earth Objects Committee member, and vice president of the European International Institute for Risk, Security, and Communication Management; Edward Lu, former NASA astronaut, ASE Near Earth Objects Committee member, and co-founder, chairman, and CEO of the B612 Foundation; and Soichi Noguchi, engineer and JAXA astronaut, and ASE Near Earth Objects Committee member.

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  • Neil deGrasse Tyson reacts to report of asteroids barreling toward Earth


    Astrophysicist Neil deGrasse Tyson explains how NASA deflects the asteroids that are careening toward our planet.

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  • The Asteroids That Could Kill Us All | Unveiled


    Earth has witnessed massive, apocalyptic events in its past. This planet has seen at least five mass extinctions throughout history, but could a wayward asteroid cause another one? Could the solar system one day turn against us?

    In this video, Unveiled discovers whether a rock from space could one day trigger our next mass extinction...

    This is Unveiled, giving you incredible answers to extraordinary questions!

    Find more amazing videos for your curiosity here:
    What's Inside the Asteroid Belt? -
    Surprising Ways to Survive an Asteroid Strike -

    Are you constantly curious? Then subscribe for more from Unveiled ►

    #Asteroid #Meteor #Armageddon #Apocalypse #Space

  • these are the asteroids to worry about


    Stephen Hawking thought an asteroid impact posed the greatest threat to life on Earth

  • Apophis Asteroid - Apophis is Coming in 2029


    The Apophis Asteroid is going to get very close to Earth in 2029! How/will it impact us? Apophis is classified as a Potential Hazardous Asteroid (PHA) to Earth and astronomers want to use the event to learn more about how these celestial bodies will affect Earth.

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  • These are the asteroids to worry about


    Stephen Hawking thought an asteroid impact posed the greatest threat to life on earth, we miss him and his words❤

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  • 5 Asteroids You Should Worry About


    5 Asteroids You Should Worry About

    If there are any asteroids/meteors that should bring you any concern, these are them. While these asteroid impacts may pose some threat to Earth, the truth is that the odds are still VERY much in our favor. From 999942 Apophis to 3122 Florence here are 5 asteroids scientists worry about.


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  • 10 Asteroids We Really Should Be Worried About!


    From the deadly asteroid due to impact Earth in 2022 to the politics thwarting our defense against it, here is everything you need to know about the asteroids we need to be worrying about!

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    10: Near Miss of 2020
    Asteroid is flying by Earth this week — here's how to watch (
    Asteroids are definitely a big deal and something that everyone should at least be aware of. But unfortunately, not everyone knows about the asteroid problem.

    9: The Impact of 2022
    Unbeknownst to most of the world, there is an asteroid on its way towards planet earth and it could impact on May 6, 2022. The asteroid's name is 2009 FJ1, and according to NASA it has a 1 in 3984 chance of smashing into our world.

    8: The Richest Asteroid
    Not all asteroids are dangerous. In fact, asteroids can be worth quite a bit of money. For example, The Hubble Space Telescope recently captured a photograph of an asteroid estimated to be worth 70,000 times more than the global economy.

    7: Asteroid 2018VP
    If you look into it, it seems as though there is no end to the possibility of destruction by asteroid. Another asteroid that almost made a collision course with earth is known as asteroid 2018VP.

    6: Politics and Asteroids
    If one day a planet-destroying asteroid were to be found speeding towards us, it might not be the asteroid that kills us, but rather the politics that will have hampered our response.

    5: The Asteroid of 2068
    And now it's time to learn about the very real threat of an undefended earth against an asteroid the size of a skyscraper. According to NASA themselves, there is a megalithic asteroid heading straight for earth that could make impact in the year 2068.

    4: The DART Spacecraft
    The term planetary defense may seem like something out of a science fiction movie, but the fact remains that planetary defense is here and it's necessary if we’re going to avoid destruction by an asteroid.

    3: The Death of the Arecibo Observatory
    For humans to continue detecting the asteroids that we should worry about, we need observatories. In 2020, the fight against catastrophic asteroids took a big hit when the Arecibo Observatory collapsed under itself in a dramatic and unintended act of self-destruction.

    2: The Asteroid that Killed the Dinosaurs
    Speaking of hitting the earth, there is no better example of the destructive power of asteroids than the asteroid that killed the dinosaurs.

    1: The Planet Killer
    Scientists call it the planet killer. It's a theoretical asteroid that every citizen of earth should be worried about. The planet killer is an asteroid so large that all life on earth would be annihilated almost immediately.

    #asteroids #meteorites #earth #americaneye

  • NASA Said That Something Massive Is Heading Towards Our Planet


    NASA said that something massive is heading towards our planet. Today, we take a look at what NASA officials said is heading towards our planet.

    It’s an uncomfortable truth that we are vulnerable within the universe. It’s a fact that asteroids approach the Earth every year. There is never a guarantee of total safety and it is just a matter of sheer luck as to whether we are directly hit.

    Thank you for watching!

    Thank you to CO.AG for the background music!

  • The Hazardous Asteroids to worry about- in 60 sec ;Science Loop #shorts


    In the last book of Stephen Hawking, he thought an asteroid impact is the greatest threat to life on Earth. you have probably heard about The Chelyabinsk meteor incident.
    A potentially hazardous object (PHO) is a near-Earth object – either an asteroid or a comet – with an orbit that can make close approaches to the Earth and large enough to cause significant regional damage in the event of impact. They are defined as having a minimum orbital intersection distance with Earth of less than 0.05 astronomical units (19.5 lunar distances) and an absolute magnitude of 22 or brighter. 98% of the known potentially hazardous objects are not an impact threat over the next 100 years.

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  • How Much Should We Worry About Asteroids?


    Asteroids are the only natural disaster we know how to prevent. A meteor exploded above Chelyabinsk, Russia last year -- and it will happen again. So why don't we have a plan in place? 
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  • Dont Worry About That Asteroid That Might Hit This Year | SciShow News


    That asteroid the headlines have been warning people about isn't likely to actually hit us, and scientists might have solved a mystery that could save lives: the relationship between tides and earthquakes.

    Skillshare is offering SciShow viewers two months of unlimited access to Skillshare for free! Try it here:

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  • What You Need To Know About Asteroids and Other Near-Earth Objects


    Have burning questions about asteroids? Our experts have answers!

    (Spoiler Alert: none of them will hit Earth.)

    Our solar system is littered with asteroids and comets and sometimes they get a little close to Earth. When an asteroid or comet looks like it could come near our home planet, we keep close watch to warn of any potential impacts.

    Here's what you need to know about how we find, track, and monitor these near-Earth objects:

  • इन एस्टेरोइड से डरना चाहिए | These are the asteroids to worry about


    स्टीफन हॉकिंग ने सोचा था कि एक क्षुद्रग्रह प्रभाव ने पृथ्वी पर जीवन के लिए सबसे बड़ा खतरा पैदा कर दिया।

  • How NASA Plans to Save Earth from Asteroids | The Space Show


    The Double Asteroid Redirection Test is NASA's first test of a kinetic impactor that could one day be used to save Earth from an incoming asteroid. Andy Rivkin, an asteroid expert with The Johns Hopkins University Applied Physics Laboratory, explains how to smash into giant space rocks and possibly save human civilization.

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  • NASA Science Live: Asteroid Close Approach


    Have you heard about an asteroid close-approach happening on April 29? Asteroid 1998 OR2 poses no threat to our planet, but we can still learn a lot by studying it. Don't miss a special Planetary Defense episode of NASA Science Live on Monday, April 27 at 3:00 p.m. EDT to learn how we find, track and monitor asteroids and near-Earth Objects.

  • Field Trip: Asteroids


    Are asteroids space junk or cosmic treasure? Join a virtual flight to the Asteroid Belt with Museum Curator Denton Ebel and two mission scientists from NASA’s OSIRIS-REx mission, Harold Connolly, Jr. and Vicky Hamilton.

    Explore space from the safety of your couch with our playlist:

    #StayHome #Learnwithme #Asteroid #Comet #OSIRIS-REx #NASA

    Find out how many asteroids there are, what they’re made of, whether they may have supplied ingredients for life on Earth, and more while Marina Gemma pilots our exploration of the Main Belt, Trojan, and Near-Earth asteroids. Museum Research Associate Harold Connolly, Jr., who serves as the OSIRIS-REx sample scientist, and Vicky Hamilton, who is the mission’s spectroscopy scientist, will be sharing more about this mission to return samples of the carbon-rich asteroid Bennu to Earth in 2023 and answering questions live. Join the Watch Party on Tuesday, June 30, at 2 pm EDT, or you can watch on this page.

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  • Scientists Finds Ingredients For Life On Asteroid


    Space Probe Finds Ingredients For Life On Asteroid
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    Water is vital for the survival of life on Earth. And yet, we still have no idea where it came from.

    Some researchers say asteroids brought water and other material needed for life to spring up on Earth.

    Now missions with highly advanced spacecraft are being sent into space to land on asteroids to help uncover the origins of life and the solar system.

  • What Are Asteroids And Where Do They Come From?


    Asteroids are small, rocky objects that orbit the sun, just like the rest of the planets and celestial bodies in our solar system. Although asteroids are present throughout the solar system, most of them live in the asteroid belt—a region located between the orbits of Mars and Jupiter. The size of objects within the asteroid belt have a wide range, from being no bigger than a dust particle to almost a thousand kilometers wide. Our solar system came into existence about 4.6 billion years ago when a large cloud of gas and dust collapsed.

    Following this event, most of that material fell to the center of the cloud and resulted in the formation of the sun—the central star of our solar system. Planets were formed from some of the condensing dust in that cloud, but not all celestial material had the chance to be incorporated into planets. The leftovers from that time took the form of asteroids.

    #science #funfacts #asteroids

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  • Surveying the Diversity of the Trojan Asteroids | Bridgette Davey | TEDxDecaturPublicLibraryWomen


    The Lucy Mission will send a probe to investigate six of the asteroids orbiting Jupiter known as the Trojan Asteroids. It's highly likely that these asteroids are remnants of the same material that formed the outer planets. The Trojan asteroids are to the solar system what fossils are to dinosaurs. Bridgette Cassidy Davey is a senior physics major currently attending Monmouth College in Monmouth, Illinois. She primarily does research in astrophysics involving near earth asteroids. Her research and desire to share her love of astronomy are what motivated her to become a NASA Lucy Mission Ambassador. Throughout her academic life, Bridgette has had several mentors share their passion for science and encourage the same interest in her. She hopes to use this opportunity to share about the Lucy Mission and do the same for others. Some of the things Bridgette enjoys in her spare time are growing plants, fossil hunting, reading science fiction, painting pictures, and playing flute. One of her favorite astronomy quotes is by Miles Kington: Astronomers, like burglars and jazz musicians, operate best at night. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at

  • The asteroids club - common threats can lead to compromise: Jonathan Haidt at TEDxMidAtlantic 2012


    Jonathan Haidt (pronounced height) is a social psychologist at the NYU-Stern School of Business. He received his Ph.D. from the University of Pennsylvania in 1992, and spent most of his career (1995-2011) at the University of Virginia. Haidt's research examines the intuitive foundations of morality, and how morality varies across cultures. In recent years he has examined the moral cultures of liberals, conservatives, and libertarians. Haidt is the author of The Happiness Hypothesis, and of the The Righteous Mind: Why Good People are Divided by Politics and Religion.

    In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, self-organized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are self-organized.* (*Subject to certain rules and regulations)

  • NASA asteroid sample to begin 200 million mile journey back to Earth


    NASA asteroid sample to begin 200 million mile journey back to Earth

  • What’s the difference between asteroids and comets?☄ | Educational Videos for Kids


    The universe has asteroids, and comets. Do you know what they are? Can you differentiate them?

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    Recommended video: What is an Asteroid? | Educational Videos for Kids

    Look at these images, they are asteroids, and comets.
    You’ve heard talk about asteroids and comets many times, but… Do you know what they are? Can you differentiate them?

    Asteroids and comets, are rocky and frozen remains, which exist since the formation of the solar system. When they are close to our planet, we can see them in plain sight. And some of them are beautiful, like this comet.

    Asteroids and comets, are differentiated because of their composition, and their size.

    Asteroids, are usually larger than comets, and are composed of rock and metal. so the sun's heat hardly affects them. Also, asteroids don’t have a tail, remember that!

    Comets, are composed of ice, rock, dust, and organic compounds, and are recognised, because they do have, really looong tails. The most famous one, is comet Halley, which can be seen from Earth, approximately every 75 years. Although seen from the surface of our planet, it looks gigantic and as if it’s tail could measure millions of kilometres, comet Halley is veeery small, measures 15km long and 8 wide. Also, it’s in the shape of a peanut. The universe is so cool isn’t it?

  • How do we know an asteroid hit Earth 66 million years ago?


    One theory for why the dinosaurs went extinct is that an asteroid hit Earth at the end of the Cretaceous period. But since no one was alive to see it, how can we know that it really happened? Astrophysicist Jackie Faherty reveals how clues found in sedimentary rock and on the ocean floor have helped scientists piece together this millennia-old mystery.

    If you want to learn more about the effect an asteroid impact would have had on life on Earth during the Cretaceous, watch this week’s Dinosaur video:

    #Asteroid #Extinction #AlvarezHypothesis #SpaceVsDinos #AMNH

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    This video and all media incorporated herein (including text, images, and audio) are the property of the American Museum of Natural History or its licensors, all rights reserved. The Museum has made this video available for your personal, educational use. You may not use this video, or any part of it, for commercial purposes, nor may you reproduce, distribute, publish, prepare derivative works from, or publicly display it without the prior written consent of the Museum.

    © American Museum of Natural History, New York, NY

  • Comets, Asteroids, and Meteors | Learn all about what they are made of and how they differ


    Comets Asteroids and Meteors are all over the solar system. But did you know that each are quite different? You may be wondering What is a comet?, What is an asteroid made of?, or Where does a meteor come from? Well, sit tight because in this video we will answer all of your questions!

    We first take a closer look at asteroids for kids. Asteroids are the largest of the space rocks, but may also include metal substances. Most of them go around the Sun between the orbits of Mars and Jupiter. The area of orbit is called the Asteroid Belt, which includes an inner and an outer region. The inner region is made up of asteroids that mostly contain metal (Gold, Iron, Platinum, and Nickel). The outer region contains asteroids mostly made up of rocks.

    We then explain what a comet is. You can think of a comet as a large snowball filled with or covered by dust, metal, and debris. They have an icy core, covered by a layer of black dust. The center is mainly composed of water and gases, frozen and mixed together with bits of rock and metal. A comet in the outer parts of the Solar System is too small to be seen from Earth. We then talk about the difference between short and long period comets.

    Lastly, we explore Meteors, meteoroids, and meteorites. Meteors are sometimes called falling or shooting stars, and they begin as meteoroids traveling through the Earth’s atmosphere. They are not stars. They are small pieces of rock or metal originating from a comet or asteroid. They form from colliding asteroids of debris from comets. A meteorite is a meteoroid that does not burn up in the Earth’s atmosphere, but instead, falls to the Earth’s surface.

    Video Chapters:
    0:00 Introduction to the 3 space rocks
    0:57 Asteroids
    1:45 Ceres and Other Dwarf Planets
    3:46 Comets
    4:58 2 Types of Comets [Short Period and Long Period]
    5:55 Meteors
    6:09 Meteoroids
    7:00 Meteorite

    We hope you enjoyed this video and had fun learning about Asteroids, Comets, and Meteors. If you'd like even more resources on this topic we invite you to download our free lesson plan that is complete with more activities, worksheets and more all about how comets, meteor, and asteroids. You can download that lesson here:

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  • Comets vs asteroids


    An educational video cataloging the differences between comets and asteroids, their qualities, and locations

  • How Asteroids Destroy Worlds | How the Earth Was Made | Full Episode | History


    These giant mountain-sized boulders from space have wrought death and destruction throughout the millennia but until recently geologists could find no evidence that they had actually struck the earth, in Season 1, Episode 10, Asteroids. #HowTheEarthWasMade
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    HISTORY goes to the ends of the earth to find where our world began. Forged from fire and ice, formed by floods, volcanoes, asteroids and earthquakes, our planet tells a dynamic geological story. What are mega-tsunamis? What happens when you have millions of years of rain? Visual effects, location filming and stunning aerial photography bring viewers back 4.5 billion years to enjoy a unique window on our world. How the Earth Was Made peels back time like layers of rock to reveal the origins of the place we call home.

    HISTORY® is the leading destination for award-winning original series and specials that connect viewers with history in an informative, immersive, and entertaining manner across all platforms. The network’s all-original programming slate features a roster of hit series, premium documentaries, and scripted event programming.

  • Using Rockets to Save the Earth from Asteroids


    Jeffrey Hughes explains how we might use rockets to save the earth from an asteroid impact--by pushing back.

  • Asteroids Close Flyby Earth || How dangerous are these


    Asteroids flyby Earth usually come into the notice of scientific community and they warn of these close flyby of asteroid to Earth. Some Scientists say that one day it may hit Earth but some say that these are not dangerous and it should not be cause of worry.
    So This Video Actually Tells The Reality About These Close Flyby Of Asteroids To Earth.
    An another asteroid close flyby to earth will occur this week. Asteroid 2020 ND, 160 Metres in Diameter, will Fly Past Earth on July 24.

    Please like, comment, share and subscribe to our channel for more interesting videos....

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    #Asteroid #Asteroid2020ND #Asteroid2020NDcloseapproachtoearth

    Asteroid 2020 ND to Fly Past Earth on July 24.

  • Lecture 16, March 1. Comets, asteroids and planetary defense


    Given by Jennifer Larson

  • Asteroids, Comets, & Meteors: Whats the Difference?


    Episode 1 of 5

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    In 1801 Giuseppe Piazzi spotted a bright spot that looked like a star while looking between Mars and Jupiter. They called it an asteroid which is Greek for “star like.”

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    Infographic: What’s The Difference Between A Comet, Asteroid, And Meteor?:

    “With all the various space rocks flying by and into Earth last Friday, perhaps you’ve been wondering about the correct terminology, since a rock from space has different names depending on what it is made of and where it is.

    What Are Asteroids Made Of?:

    “What are asteroids made of? Asteroids are made mostly of rock — with some composed of clay and silicate — and different metals, mostly nickel and iron. But other materials have been found in asteroids, as well.

    FAQ: What Is The Difference Between A Meteor, A Meteorite, An Asteroid And A Comet?:

    “Most of us probably have seen meteors or shooting stars. A meteor is the flash of light that we see in the night sky when a small chunk of interplanetary debris burns up as it passes through our atmosphere. Meteor refers to the flash of light caused by the debris, not the debris itself.

    What Are Asteroids And Where Do They Come From?:

    “Asteroids are rocky objects primarily found in the asteroid belt, a region of the solar system that lies more than 2 ½ times as far from the Sun as Earth does, between the orbits of Mars and Jupiter.

    Asteroids: Fun Facts And Information About Asteroids:

    “Asteroids are small, airless rocky worlds revolving around the sun that are too small to be called planets. They are also known as planetoids or minor planets.

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  • How to Make Miniature Asteroids


    See our videos one month early:

    Matthew shows you a simple way to make asteroids for your space battles.

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  • Asteroids: Crash Course Astronomy #20


    Now that we’ve finished our tour of the planets, we’re headed back to the asteroid belt. Asteroids are chunks of rock, metal, or both that were once part of smallish planets but were destroyed after collisions. Most orbit the Sun between Mars and Jupiter, but some get near the Earth. The biggest, Ceres is far smaller than the Moon but still big enough to be round and have undergone differentiation.

    CORRECTION: In the episode we say that 2010 TK7 is 800 km away. However, 2010 TK7 stays on average 150 million kilometers from Earth, but that can vary wildly.
    Sorry about that!

    Crash Course is on Patreon! You can support us directly by signing up at
    Table of Contents
    Asteroids Are Chunks of Rock, Metal, or Both 1:45
    Most Orbit the Sun Between Mars and Jupiter 7:16
    Ceres is Far Smaller Than the Moon, But Large Enough to be Round 3:43


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    Timelapse of Asteroid 2004 FH's flyby [credit: NASA/JPL Public Domain]
    Asteroid Discovery Video [credit: Scott Manley -]
    Inner Solar System [credit: Wikimedia Commons]
    Kirkwood gaps [credit: Wikimedia Commons]
    Ceres, Earth & Moon size comparison [credit: NASA]
    Dawn Glimpses Ceres’ North Pole [credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA]
    Ceres cutaway [credit: NASA, ESA, and A. Feild (STScI)]
    Bright Spot on Ceres Has Dimmer Companion [credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA]
    Vesta [credit: NASA/JPL-Caltech/UCAL/MPS/DLR/IDA]
    Lutetia [credit: ESA]
    Gaspra [credit: NASA]
    Steins [credit: ESA/Osiris]
    Mathilde [credit: NEAR Spacecraft Team, JHUAPL, NASA]
    Ida [credit: NASA/JPL]
    Kleopatra [credit: Stephen Ostro et al. (JPL), Arecibo Radio Telescope, NSF, NASA]
    An artist's conception of two Pluto-sized dwarf planets in a collision around Vega. [credit: NASA/JPL-Caltech/T. Pyle (SSC)]
    Itokawa [credit: ISAS, JAXA]
    An artist's illustration showing two asteroid belts and a planet orbiting Epsilon Eridani [credit: NASA/JPL-Caltech]
    Near-Earth Asteroids [credit: NASA/JPL-Caltech]
    Lagrange Points Diagram [credit: Wikimedia Commons]
    TK7 [credit: NASA/JPL-Caltech/UCLA]
    165347 Philplait [credit: Larry Denneau/Pan-STARRS via Amy Mainzer]

  • Astro 101 Class 16: Asteroids, Comets, and Dwarf Planets


    In this class, we explore the diverse zoo of smaller objects - asteroids, comets, and the Dwarf Planets. How are they similar? How are they different? And how do we explore them? How do the dinosaurs fit in? And the great question we have all been asking: would Pluto make a good vacation stop?

  • Lucy Mission Overview: Journey to Explore the Trojan Asteroids


    Launching in late 2021, Lucy will be the first space mission to explore the Trojan asteroids. These are a population of small bodies that are left over from the formation of the solar system. They lead or follow Jupiter in their orbit around the Sun, and may tell us about the origins of organic materials on Earth.

    Lucy will fly by and carry out remote sensing on six different Trojan asteroids and will study surface geology, surface color and composition, asteroid interiors/bulk properties, and will look at the satellites and rings of the Trojans.

    Learn more about the Lucy mission:

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    Video credit: NASA's Goddard Space Flight Center

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  • Can we deflect asteroids? - space


    In the edition of Space, Euronews correspondent Jeremy Wilks reports from the Observatory of the Côte d'Azur in the south of France on a unique mission to deflect an asteroid.

    Asteroids have the potential to cause a catastrophe - a small asteroid could wipe out an entire city, while a large one could mean the end for us all.

    It's a threat we're aware of, and which scientists and engineers are working to overcome. Among them is leading expert Patrick Michel, from the Observatory of the Cote d…

    euronews knowledge brings you a fresh mix of the world's most interesting know-hows, directly from space and sci-tech experts.

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