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Mysterious Blue Object Near Andromeda May Have an Explanation

2026-01-11 Science & Technology
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Anton Petrov
Anton Petrov
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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 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)

@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!

209 13 replies
@theDorkness69 2026-01-12

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

25
@jimcurtis9052 2026-01-11

Wonderful as always Anton. Thank you. 👍😁👍

14 1 replies
@jjt1881 2026-01-12

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

7
@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.

5
@averaen3890 2026-01-11

Yay new Anton video

3
@joetuktyyuktuk8635 2026-01-12

It's a Magog Worldship.

2
@AlbiDartanan 2026-01-12

something like - "for the trees we did not see forest "

0
@caejones2792 2026-01-12

"OK, so the only planets I haven't searched are Yardrat and Vampa. ... Wait, am I in space? Good thing I'm in the part of the galaxy that has air 🙊.”

0
@SpaceMysteriesHQ 2026-01-12

The fact that scientists still don't agree on what this is makes it so much more interesting. A ghost nebula with a missing star? That's either a solved mystery or the beginning of a bigger one.

0

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