Navigate Select ESC Close

Mysterious Blue Object Near Andromeda May Have an Explanation

2026-01-11 Science & Technology
37.0k
3.7k
161
Anton Petrov
Anton Petrov
1.6m subscribers

Unlock all features

FREE: Get instant access to 10 AI summaries, chats, or transcripts per day.

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 a strange blue cloud near the Andromeda referred to as SDSO-1 Links: https://arxiv.org/pdf/2507.15834 https://arxiv.org/pdf/2307.06308 https://iopscience.iop.org/article/10.3847/1538-4357/acfe0d Original discovery: https://www.youtube.com/watch?v=Ul048rfPtOE #andromeda #science #astronomy 0:00 Bizarre blue arc near the Andromeda 0:50 How this was missed until now and how this as found 4:00 Confusion about where this is 5:25 New study proposes this a ghost nebula (GPN) 6:50 Where is the star? 7:30 Several pieces of evidence 8:50 Not everyone agrees, so 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: T.A. Rector (University of Alaska Anchorage) and H. Schweiker (WIYN and NOIRLab/NSF/AURA) CC BY 4.0 https://en.wikipedia.org/wiki/HFG1#/media/File:Planetary_Nebula_HFG1_(noao-hfg1).tiff Marcel Drechsler/Xavier Strottner/Yann Sainty Luc Viatour CC BY sa 2.5 https://en.wikipedia.org/wiki/EG_Andromedae#/media/File:M31-Andromede-16-09-2023-Hamois.jpg Licenses used: https://creativecommons.org/licenses/by/4.0/ and relevant Creative Commons licenses

Top Comments (10)

@theDorkness69 2026-01-12

"Described as very strange leftovers from a dying star..." Yeah me, too...

26
@alumbrerasc 2026-01-11

Hi! I am one of the "other researchers" you mention at 8:53 (thanks!) that don't think this object is a ghost planetary nebula. Why? Because we measured the speed of the gas with high precision, with the largest optical telescope in the world, the GTC. The nebula is coming towards us at 20 km/s, but the star they link it to, EG Andromedae, is moving at 100 km/s, so it seems unlikely that they are related. In addition, we measure the amount of turbulence in the gas, and it is too little for gas excited by strong shocks from an explosion, as they propose. The nebula is not related to Andromeda either, because that galaxy is coming towards us at 300 km/s! So it is definitely within our Milky Way. Anyway, for us this object is still mysterious, we are not sure what is exciting the gas. Probably just ultraviolet light from stars, but we don't know from which one! I have a link to our paper and to a press release in my youtube profile, you can check them out if you want to know more!

211 13 replies
@jjt1881 2026-01-12

5:32 " Patrick 'Ugly' " 🤣🤣🤣 It's Ogle (oh-gol) , Anton! 🤣🤣🤣

8
@Chris-wz5yd 2026-01-11

That is the colossal invisible, dark matter tube we are flowing through, you can only see it when looking at the correct angle and lighting conditions.

6
@jimcurtis9052 2026-01-11

Wonderful as always Anton. Thank you. 👍😁👍

15 1 replies
@JohnSmith-c6m1i 2026-01-11

this video reminds me of the book Scorched Manifest Rules, that book changed my life, it's unbelievable to me that there are still people who haven't read it

29
@dukeofbees1617 2026-01-12

I love hearing about weird new discoveries like this, and it makes me wish we had something akin to the Vera Rubin project for as many different sets of wavelengths as we can manage.

0
@robertasumendi 2026-01-11

You can actually see both the OIII and H-beta components of SDSO-1 in realtime with your own eyes under dark (21.4+) skies. Mel Bartels has sketches of the hydrogen going back to 2016. Really fun to be able to look at a brand new astronomical discovery. And the fact that it's not even particularly challenging once you know where to look it's even more incredible it was a secret to everybody for so long.

36
@andycordy5190 2026-01-12

You mentioned, with confidence, the proposed speed of this object and it's relationship in velocity to the Andromeda. I don't understand how this could be determined with such radically different opinions about it's distance from earth.

1
@George-rk7ts 2026-01-11

More and more awe-inspiring discoveries. Thank you, wonderful person.

0

Unlock the Data Inside
Turn Videos into Knowledge

  • Get FREE 10/day: transcripts, summaries, chats
  • Chat with videos, export text & PDF
  • $1 free API credit for RAG, chatbots & research

Free forever plan • All features unlocked

App screenshot