What Were the Biggest Asteroids to Hit Earth?

Impact Craters on Earth, Moon and other planets provide evidence that the Earth has been struck by asteroids since it formed roughly 4.5 billion years ago. Once every few million years, an object large enough to threaten life on Earth comes along.

#asteroids #impact #craters #space #Earth #solarsystem #astronomy

Meteorite specialist Denton Ebel, Curator in the Division of Physical Sciences, provides a brief history of impacts from the early days of the solar system to the impact that might have led to the demise of most dinosaurs on the planet.

ASTEROID CRASH COURSE

Asteroids can be hazardous to life on Earth, but they also provide clues about the early solar system. In the Asteroid Crash Course video series, Denton Ebel, curator in the Museum's Division of Physical Sciences, explains how asteroids formed and the varying degrees of destruction they cause when they fall to Earth.

What is an Asteroid?

Meteorite, Meteor: What’s the Difference?

Why Are There No Planets in the Asteroid Belt?

Can Asteroids Be Deflected?

What Happens When Large Meteorites Fall to Earth?

How Are Large Asteroids Tracked?

VIDEO CREDITS:

VIDEO
AMNH/J. Bauerle

VISUALIZATIONS
“Cosmic Collisions” by AMNH/Denver Museum of Nature & Science/GOTO, Inc. Tokyo, Japan/Shanghai Science and Technology Museum, China
AMNH/Department of Exhibition
NASA/ Goddard Space Flight Center/Lunar Reconnaissance Orbiter

PHOTOGRAPHY
AMNH/D. Finnin
AMNH/S. Thurston
NASA
TTÜ/Gennadi Baranov
Cardiff University/Ian McMillan
United States National Park Service
Wikimedia Commons/wilson44691

MUSIC
“Scrape the Sky” by Ben Worley and Matt Morris/
Warner Chappell Production Music

COSMIC COLLISIONS
Cosmic Collisions was developed by the American Museum of Natural History, New York, in collaboration with the Denver Museum of Nature & Science; GOTO, Inc., Tokyo, Japan; and the Shanghai Science and Technology Museum, China.

Made possible through the generous support of CIT.

Cosmic Collisions was developed by the American Museum of Natural History with the major support and partnership of National Aeronautics and Space Administration, Science Mission Directorate, Heliophysics Division, grant number NNG04GC18G.

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

[yankis.]

"We hope it doesn't happen to us"
*nervous giggle*








seriously man

[maazkalim]

Whoa...

What a CGI!

And truly adventurous.

[jasonlewis]

0:31
"We know from Mercury-"
*Shows a picture of the Moon Callisto*

[justayoutuberyoutuber]

The planetarium show cosmic collisions

[franiscoroasaleshernendez]

Estadios. A tadas la gente dios le bendiga Cristo Vi en ven tiempo seca serca ya

[Aravindhan_Balachandran]

Where doest the meteorite go after impact?

[Justwantahover]

IMPACT CRATERS PROVE OLD EARTH
With the really large strikes, the meteor doesn't slow-down and hits at about 40, 000 mph. lol High power bullets fired into sand turn into "sand" (the bullets disintegrate). So a large asteroid going over 40 times faster, would disintegrate too. And no trace of any asteroid is found in the really large craters (over 1 km diam). But rare metals from the original asteroid are left in the crater rim (in an observable layer).

It's dubbed the "iridium ring" and it's complete proof of strike, cos the iridium couldn't be in that ring pattern embedded in the crater rim, beforehand. No way. Being part of the crater rim, the iridium must have come from the asteroid. It's proof that it's a meteor strike, and the mere size of (some of the craters over 200 km diam and as deep as Mt Everest's height) ar proof of old earth. With a few strikes that size, and another 160 over 1 km diam craters, I don't think the world is 6, 000 years old. I post this information to creationists and they can't answer. lol The iridium ring could easily be analysed by anyone with the equipment to verify that it's rare stuff, in unusual concentrations..

[Shaunt]

The one that killed the dinos. So, when's the next Tunguska sized event?

[franiscoroasaleshernendez]

Serca serca tiempo seca amigo en la tierra en todo le vediga todos la. Tierra dios ven vi crsito que Dios pero dame. Mi familia mama y hermana soleada mi familia que cuerde todo peligros para partidos las gente que Dios le vediga Dios crsito CI viene ateride serca otro más los lageles igelisa para todo mueudo la tierra serca tiempo serca. Dios Vi ven

[xayndaabolol]

We, know, there, are, many, bodyguard in the, sky

[davidpowell]

The earth is round because of asteroids hitting it lol

[subratbarik]

Sir l can joine in this solar system...

[TPWWCAP]

Aum ara pass na dchi l aum mane padme hum l aum Tara tu Tara tura savha l aum vajra rathna bhanda duma ting kyol ting hum phat l aum mane padme hum l naka bum dorji boi drap l aum mane peme hum l aum mane peme hum l aum mane peme hum l aum hiri shirthi vikrantanas hum phat l

[milkn_cookies]

Astroids are just salty because they couldn't become a planet🙄🙄🙄