A Second Earth, and OSIRIS REx is Go for Asteroid Bennu

Planetary Radio: Space Exploration, Astronomy and Science

The Planetary Society

Technology, Science

4.8 • 1.4K Ratings

🗓️ 22 April 2014

⏱️ 29 minutes

🔗️ Recording | iTunes | RSS

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Summary

Finally found: an Earth-sized planet in the habitable zone. You’ll hear lead scientist Elisa Quintana make the announcement. Then OSIRIS REx mission Principal Investigator Dante Lauretta will tell us how the spacecraft will return a sample of material from the birth of the solar system.Learn more about your ad choices. Visit megaphone.fm/adchoices

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Transcript

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0:00.0	Earth 2 and visiting asteroid Bennu this week on planetary Radio. Radio. Welcome to the Travel Show that takes you to the Final Frontier.
0:20.0	I'm Matt Kaplan of the Planetary Society.
0:22.0	Today we'll visit with the leader of the Osaius. I'm at Kaplan, the Planetary Society.
0:22.6	Today we'll visit with the leader of the Osiris Rex Mission that will rendezvous with an
0:27.4	asteroid and bring a few precious grams of that space rock back to Earth.
0:33.0	You'll also learn how you can send your name along for the ride.
0:36.6	Emily Lachtoale is off this week as we prepare for planetary radio live at the USA Science
0:42.3	and Engineering Festival. But Bill Nye and Bruce Betts will be checking
0:46.1	in. First though a story we barely had time to include. NASA held a news conference on
0:51.9	April 17th to announce,
0:54.4	well, here's lead researcher Elisa Quintana
0:57.4	of the SETI Institute with the big news.
1:00.0	On behalf of the SETI Institute,
1:02.4	the NASA Kepler team, and many other collaborators, I present
1:05.8	to you Kepler 186F.
1:08.7	This is the first validated Earth-sized planet in the habitable zone of another star. We can now say that other
1:14.8	potentially habitable worlds similar in size to our Earth can exist and it's no
1:19.8	longer in the realm of science fiction.
1:23.0	So Kepler 186F is an M dwarf that is smaller and cooler than our sun,
1:28.0	and this whole system is at about 500 light years away from Earth.
1:32.0	So the five planets are known to orbit the star and they all have
1:36.4	sizes that are less than one and a half times the size of Earth. The inner four planets
	...

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