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Our Alarmingly Close Shave with an Asteroid

How often do we miss asteroids like 2017 OO1, and what are astronomers doing to limit their impact? Meanwhile, distant icy worlds might not look as promising in our search for extraterrestrial life as scientists once thought.

Hosted by: Hank Green

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Sources:

http://earthsky.org/space/asteroid-2017-oo1-close-pass-undetected
http://www.purdue.edu/impactearth
http://science.howstuffworks.com/nature/natural-disasters/asteroid-hits-earth.htm
https://www.space.com/23277-dangerous-asteroids-incredible-technology.html
http://www.cnn.com/2017/07/01/us/nasa-asteroid-defense-trnd/index.html
https://watchers.news/2017/07/25/asteroid-2017-oo1/

Images:

https://en.wikipedia.org/wiki/File:%D0%92%D0%B7%D1%80%D1%8B%D0%B2_%D0%BC%D0%B5%D1%82%D0%B5%D0%BE%D1%80%D0%B8%D1%82%D0%B0_%D0%BD%D0%B0%D0%B4_%D0%A7%D0%B5%D0%BB%D1%8F%D0%B1%D0%B8%D0%BD%D1%81%D0%BA%D0%BE%D0%BC_15_02_2013_avi-iCawTYPtehk.ogv
https://commons.wikimedia.org/wiki/File:Europa-moon.jpg
https://commons.wikimedia.org/wiki/File:PIA17202_-_Approaching_Enceladus.jpg

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