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Is the Proxima System Our Best Hope For Another Earth?

2022-03-08 Education
1.0m
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PBS Space Time
PBS Space Time
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Thank you to Morning Brew for supporting PBS. To learn more and sign up go to https://cen.yt/mbpbsspace Take the Space Time Fan Survey Here: https://forms.gle/wS4bj9o3rvyhfKzUA PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACE At just four light years away, Proxima Centauri is our closest solar neighbor. The recent discovery of the new exoplanet Proxima D, has reopened the discussion of whether the proxima system is our best chance at reaching another Earth. How did we discover Proxima D? How do we know what the conditions are on planets so far away? Watch the episode to learn more. Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Check out the Space Time Merch Store https://www.pbsspacetime.com/shop Sign up for the mailing list to get episode notifications and hear special announcements! https://mailchi.mp/1a6eb8f2717d/spacetime Hosted by Matt O'Dowd Written by Matt O'Dowd Post Production by Leonardo Scholzer, Yago Ballarini, Pedro Osinski, Adriano Leal & Stephanie Faria GFX Visualizations: Ajay Manuel Directed by Andrew Kornhaber Assistant Producer: Setare Gholipour Executive Producers: Eric Brown & Andrew Kornhaber Executives in Charge (PBS): Adam Dylewski, Maribel Lopez Director of Programming (PBS): Gabrielle Ewing Spacetime is produced by Kornhaber Brown for PBS Digital Studios. This program is produced by Kornhaber Brown, which is solely responsible for its content. © 2021 PBS. All rights reserved. End Credits Music by J.R.S. Schattenberg: https://www.youtube.com/user/MultiDroideka Special Thanks to Our Patreon Supporters Big Bang Mark Evans David Taiclet Ben Dimock Daniel Alexiuc Nenado763 Peter Barrett Nils Anderson David Neumann Charlie Leo Koguan Sandy Wu Matthew Miller Ahmad Jodeh Alexander Tamas Morgan Hough Juan Benet Vinnie Falco Fabrice Eap Mark Rosenthal David Nicklas Henry Van Styn Quasar Alex Kinsey Alex Kern Ethan Cohen Stephen Wilcox Christina Oegren Mark Heising Hank S Hypernova william bryan Sergio Bonfiglio drollere Joe Moreira Marc Armstrong Scott Gorlick Paul Stehr-Green Adam Walters Russell Pope Ben Delo Scott Gray Антон Кочков John R. Slavik Mathew Donal Botkin John Pollock Edmund Fokschaner Joseph Salomone chuck zegar Jordan Young m0nk Daniel Muzquiz Gamma Ray Burst Tony Affinito Lillith Montgomery Avi Yashchin MHL SHS Kory Kirk Joshua Friede Terje Vold Anatoliy Nagornyy Sam Kirkpatrick comboy Brett Baker Jeremy Soller Jonathan Conerly Andre Stechert Ross Bohner Paul Wood Kent Durham jim bartosh Nubble Chris Navrides Scott R Calkins The Mad Mechanic Ellis Hall John H. Austin, Jr. Diana S Ben Campbell Lawrence Tholl, DVM Faraz Khan Almog Cohen Alex Edwards Ádám Kettinger MD3 Endre Pech Daniel Jennings Cameron Sampson Pratik Mukherjee Geoffrey Clarion Nate Darren Duncan Russ Creech Jeremy Reed Eric Webster David Johnston J. King Michael Barton Christopher Barron James Ramsey Justin Jermyn Mr T Andrew Mann Isaac Suttell Devon Rosenthal Oliver Flanagan Bleys Goodson Robert Walter Bruce B Simon Oliphant Mirik Gogri Mark Delagasse Mark Daniel Cohen Brandon Lattin Nickolas Andrew Freeman Shane Calimlim Tybie Fitzhugh Robert Ilardi Eric Kiebler Craig Stonaha Martin Skans The Art of Sin Graydon Goss Frederic Simon Tonyface John Robinson A G David Neal Kevin Lee justahat John Funai Cass Costello Tristan Bradley Jenkins Kyle Hofer Daniel Stříbrný Luaan AlecZero Vlad Shipulin Cody Malte Ubl King Zeckendorff Nick Virtue Scott Gossett Dan Warren Patrick Sutton Daniel Lyons DFaulk Kevin Warne

Top Comments (10)

@Luke-mr4ew 2022-03-08

As someone who plays Stellaris, I can guarantee that we have two very habitable planets nearby. This is probably one of them. Now we just need to find the hyperlane network...

2.0k 153 replies
@pbsspacetime 2022-03-08

From the Corrections Department: 1:26 should read "Rigil Kentaurus" rather than Rigel. Rigel, Beta Orionis (β Ori), is a blue-white supergiant star located in the constellation Orion. Thanks to Tristian Yamaty for pointing this out.

537 58 replies
@smacky101 2022-03-09

It boggles my mind that I've watched Matt for like 5 years now. Seeing him with grey in his beard still gets me in a way that few things do. Thank you guys so much for the work you do, it's appreciated in ways beyond which I can articulate.

479 22 replies
@HannahLemurson 2022-03-09

We have to keep in mind that there's a sample bias built in to these detection techniques: Large fast-moving planets are the easiest to detect, so that's why we've seen so many "hot jupiters" and planets orbiting so close as to be tidally locked.

382 26 replies
@badlydrawnturtle8484 2022-03-08

I think it's worth emphasizing that the wobble (if I did the calculations right) of Proxima Centauri that allowed for the inference of this planet is around 1 part in 300 BILLION compared to its distance to us. If you're not in awe at this, try to come up with anything that you deal with in your life that's precise to even 1 part in a thousand. Also, the radius of Proxima Centauri's wobble is apparently almost precisely 42 miles, which is clearly the best evidence that there's life there.

303 22 replies
@motor-head 2022-03-08

I understood a significant portion of this episode. That's quite an improvement for me.

194 8 replies
@clarkkent5442 2022-03-09

Are you wearing a kurzgesagt shirt? I absolutely love that channel! About as much as I love this show! Keep up the good work!

139 3 replies
@fblazquezgil 2022-03-08

The idea of making a telescope using the Einstein ring around our sun, is something I want to be alive to see.

69 11 replies
@mRibbons 2022-03-27

This is probably the first video here where I understood everything that was said. I'm not great with math, but discoveries in space I can fully appreciate.

30
@navneetnair3314 2022-03-09

I like how Matt is wearing Kurzgesagt merch

1

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