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Wow! We Finally Have Evidence of a Planet in the Nearby Alpha Centauri

2025-08-13 Science & Technology
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Anton Petrov
Anton Petrov
1.6m subscribers

JWST Observation Reveals Giant Exoplanet Candidate in Alpha Centauri

Discover the rigorous process JWST used to find a massive exoplanet candidate orbiting our closest stellar neighbor in the Alpha Centauri system. Learn what characteristics this potential new world exhibits and when scientists expect to confirm its existence through focused follow-up observation.

Short Summary

  • [00:00:13] JWST utilized coronographic imaging to spot potential infrared emissions from an object designated S1 near Alpha Centauri A.
  • [00:06:04] Non-detection in subsequent February and April 2025 follow-ups mandated rigorous testing to rule out instrumental artifacts or background objects.
  • [00:09:14] Initial estimates suggest a gas giant (Jupiter/Saturn-sized) exhibiting an eccentric (up to 4) and highly inclined orbit (up to 50°).
  • [00:12:14] If confirmed, this discovery provides direct evidence supporting models where planets can stably form and persist in complex binary star environments.

Anton discusses a significant development concerning Alpha Centauri, focusing on recent James Webb Space Telescope observations. The analysis deeply explores the observational hurdles due to stellar brightness, the steps taken to reject instrumental artifacts, and the inferred physical parameters of the potential giant planet found. This finding represents a major milestone in the hunt for worlds around Sun-like stars near our solar system.

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Description

Support this channel on Patreon to help me make this a full time job: https://www.patreon.com/whatdamath (Unreleased videos, extra footage, DMs, no ads) Alternatively, PayPal donations can be sent here: http://paypal.me/whatdamath Get a Wonderful Person Tee: https://teespring.com/stores/whatdamath More cool designs are on Amazon: https://amzn.to/3QFIrFX Hello and welcome! My name is Anton and in this video, we will talk about new evidence for a large planet in the Alpha Centauri system near us Links: https://science.nasa.gov/missions/webb/nasas-webb-finds-new-evidence-for-planet-around-closest-solar-twin/ https://arxiv.org/pdf/2508.03814 https://arxiv.org/pdf/2508.03812 https://iopscience.iop.org/article/10.3847/2515-5172/add880/meta Other videos: https://youtu.be/Gwz1t2NVACY https://youtu.be/pmIWzTJYHMI https://youtu.be/wPQ33axCFpQ #alphacentauri #planet #jameswebbspacetelescope 0:00 Alpha centauri surprise! 0:40 What we know about the star system so far 2:57 Potential detection in 2019 3:35 Why JWST is so good at this but there were still challenges 4:55 Methods used to observe this star 5:30 Surprise results and the initial analysis 8:00 Non detection at later dates was important! Orbits worked out 9:15 What we know about the planet so far 11:30 Could this be rings? 12:30 What this implies and conclusions 13:30 What's next? Enjoy and please subscribe Bitcoin/Ethereum to spare? Donate them here to help this channel grow! bc1qnkl3nk0zt7w0xzrgur9pnkcduj7a3xxllcn7d4 or ETH: 0x60f088B10b03115405d313f964BeA93eF0Bd3DbF Thank you to all Patreon supporters of this channel Special thanks also goes to all the wonderful supporters of the channel through YouTube Memberships Credit: Digitized Sky Survey 2. Acknowledgement: Davide De Martin/Mahdi Zamani CC BY 4.0 https://en.wikipedia.org/wiki/Alpha_Centauri#/media/File:The_sky_around_Alpha_Centauri_and_Proxima_Centauri_(annotated)_(eso1629f).jpg Licenses used: https://creativecommons.org/licenses/by/4.0/ and relevant Creative Commons licenses

Top Comments (10)

@MIDNITE69 2025-08-13

I swear that without this channel I wouldn't know JWST was accomplishing anything at all. Their PR team has really dropped the ball.

548 62 replies
@dj.j5099 2025-08-13

One day, one day, Anton will say: "It's Aliens." I'm waiting Anton 😂

330 42 replies
@douglaswilkinson5700 2025-08-13

Fall 2025 is the 60th anniversary of "Lost in Space" whose goal was to colonize a planet orbiting *Alpha Centauri.*

240 19 replies
@42ZaphodB42 2025-08-14

JWST is the gift that keeps on giving

114 11 replies
@suntaog 2025-08-13

One of the best things on the internet. You're great at this, man.

68 1 replies
@jimcurtis9052 2025-08-13

Wonderful as always Anton. Thank you. 👍😸

67
@George-rk7ts 2025-08-14

And to think that it wasn't that long ago that extrasolar planets were a fringe idea. Thank you, Anton.

45
@mattterry1255 2025-08-14

Anton you have a gift for education. I like the way you subtly teach people the more accurate scientific/technical terms, by using them, and then putting it in everyday terms. More power to ya, young man! Love your enthusiasm and gift!

43 1 replies
@jjt1881 2025-08-14

If confirmed, the planet would be the closest to Earth that orbits in the habitable zone of a Sun-like star. Even if the planet is a gas giant that would not support life as we know it, if it has moons, they could! Exciting prospects for life!

40 5 replies
@biolume_eater 2025-12-02

Sid Meier’s Alpha Centauri is so gonna become canon😁

1

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