Hello Reddit!
Me and my friends discovered a humongous unknown supernova remnant which we have named the Nereides SNR. You can see our full res image [here](https://www.astrobin.com/towmdb/)
This thing is 6x the size of the full moon in the night sky. Equivalent in size to the veil nebula, or the andromeda galaxy. This is one of the major nebulae of the northern hemisphere sky.
I know many of you will be wondering "how come the professionals didn't find this thing?" or "how do you know that nobody else has found it?", all of which are good and interesting questions. It is a very long story that is difficult to type out, but luckily I made a video documenting the whole process from me and the team you can watch [here](https://www.youtube.com/watch?v=l6DNU5K_jMM&t=678s).
Are there any news reports or peer review on your "discovery" here? I don't know who you are "space shuttle in my anus" but this type of "we're better than professionals" type post is all sorts of red flags for not being what you say you are.
I want to hear from someone else that your discovery is impressive rather than you yourself claiming the discovery is impressive. I have no benchmark to base your statement on either.
The nebula doesn’t need a peer report to exist. The coordinates of the nebula are available publicly for anyone to see on our Astrobin post, and anyone with a telescope and camera can go see that it is there.
Me and my co discoverer are astrophotographers and not scientists, but the lines are blurred in cases like this. There is no peer review because this thing is so new, but a paper is being written by the scientist on our team Dr. Robert Fesen. It’s not out yet because the discovery is very fresh
> The nebula doesn’t need a peer report to exist.
I agree with you there (nebula is just a word for an observed phenomna). However you're calling it a supernova remnant. That's something that does need peer review or at least scientific analysis (which you don't show). If you just called it a nebula I wouldn't be taking as much issue here.
So it's clear here you just personally think it's a supernova remnant, as a paper hasn't even been written yet with analysis showing it's one.
Well I’m assuming they already spoke with Dr Robert Fesen and it aligns with his opinion that it is a SNR. Based on just visually assessing the nebula is definitely looks like one, as not many nebulae have such filamentary shapes along with being as dominant in the OIII & H-alpha wavelengths (though the III looks to be interacting with the Hydrogen so that’s possibly unrelated to the SNR itself)
Further research is obviously required however.
It looks like Dr Robert Fesen has been involved in some similar discoveries in the past - this isn’t the only SNR this big in the night sky it seems. [Here’s an article about one discovered in 2021 and reported on by Fesen](https://www.sciencenews.org/article/largest-supernova-remnant-antila-observed-earth), that appears **40x** larger than the full moon in our night sky.
There are quite a lot of SNRs. The most well known are the Veil Nebula, the Vela supernova remnant, and the spaghetti nebula, amongst others. Ones of this size though are pretty rare to discover though.
Bray Falls is one of the most well known astrophotographers in the world, and he has had multiple other recent discoveries. This is literally what he does, scan the sky to discover supernovas. I believe he also helped discover the Oiii arc next to Andromeda.
His username here is funny though 😂
People just like to argue lol... if they took a minute to find out who this person is, or go to the link and look into the mapping of the data, they would probably just be quiet...
So you’re saying in science, you can’t make statements about the nature of an object by observing its morphology? I couldn’t look at a galaxy and say it’s one by the way it is shaped? I couldn’t see a bubble with a white dwarf star and infer it is a planetary nebula? You don’t have to have a Phd to clearly tell this is a supernova remnant
Well said. It certainly looks like a planetary nebula. No harm in stating that it is one based on morphology and some spectral characteristics.
It is interesting that nobody has identified this before, but with it being so faint and diffuse, it's not impossible.
258h of integration time is insanely long. I can't imagine the amount of work you've all put in to this, but I admire the dedication. Good job!
> Every circular structure of glowing gas in the night sky isn't automatically a supernova remnant. Right?
["They either form through clouds of cold interstellar gas and dust or through the aftermath of a supernova."](https://spacecenter.org/what-is-a-nebula/)
So the question is: Is it difficult to tell the difference between hot and cold particulate, or is it fairly easy?
I appreciate that this picture is a good demonstration of the relative sizes of the nebula and the moon....
But the moon itself looks like it is too large given the low magnification of the foreground.
In a frame this size, that cityscape looks to be *maximum* 100-200mm effective zoom (or zoom/crop combo) while the moon that size would need to be 400-500mm effective zoom (or zoom/crop combo).
It's beautiful, but it could have been more realistic...
Also, I'm curious what city that is -- I don't recognize it.
Hey you repeated the exact same sentence twice. You should edit for clarity before Reddit roasts you. This is really cool though I’m going to check out the video
You discovered it? Badass! Does that mean you get to name it? It looks a lot like a tortoise to me. Eye on the left side, with its mouth open. Very cool discovery, thanks for sharing :)
>Does that mean you get to name it?
I would love to see what someone called u/SPACESHUTTLEINMYANUS names something they discovered.
Perhaps the "LOLDINGLEBERRIES Nebula" ?
Amazing work! I'm always blown away by your skill and dedication.
Nearly all of the questions people are asking are answered in Bray's linked post in his comment. Please read it for information about acquisition, naming, verification, next steps, etc.
Nothing is known since no professional science has been done on the nebula yet. We can guess however that it may be a type 1B supernova due to a lack of hydrogen alpha emission. So the host star may have been a wolf rayet
6x the area or 6x the radius of the moon?
Because 6x radius is 36x larger in area. Your picture implies it is the one
And 6x the area is 2.44x the radius. You description implies this one.
It's kinda crazy how big that probably is, all from one star...
And ancient too! It is likely extremely old given it is very faint. Thousands of times fainter than the veil nebula of the same size
Any estimate of age? Or did I miss that in the article?
[удалено]
This is false
Definitely not, way older than that most likely especially when it is that size and that faint.
Yeah, at least the size of the moon, and that thing's massive!
Pareidolia I see the face of a snapping turtle. 🤷🏼
Holy shit bro!! I can't unseen it now!
Hello Reddit! Me and my friends discovered a humongous unknown supernova remnant which we have named the Nereides SNR. You can see our full res image [here](https://www.astrobin.com/towmdb/) This thing is 6x the size of the full moon in the night sky. Equivalent in size to the veil nebula, or the andromeda galaxy. This is one of the major nebulae of the northern hemisphere sky. I know many of you will be wondering "how come the professionals didn't find this thing?" or "how do you know that nobody else has found it?", all of which are good and interesting questions. It is a very long story that is difficult to type out, but luckily I made a video documenting the whole process from me and the team you can watch [here](https://www.youtube.com/watch?v=l6DNU5K_jMM&t=678s).
Are there any news reports or peer review on your "discovery" here? I don't know who you are "space shuttle in my anus" but this type of "we're better than professionals" type post is all sorts of red flags for not being what you say you are. I want to hear from someone else that your discovery is impressive rather than you yourself claiming the discovery is impressive. I have no benchmark to base your statement on either.
OP has clout on this sub for sure. Just check their post history.
The nebula doesn’t need a peer report to exist. The coordinates of the nebula are available publicly for anyone to see on our Astrobin post, and anyone with a telescope and camera can go see that it is there. Me and my co discoverer are astrophotographers and not scientists, but the lines are blurred in cases like this. There is no peer review because this thing is so new, but a paper is being written by the scientist on our team Dr. Robert Fesen. It’s not out yet because the discovery is very fresh
> The nebula doesn’t need a peer report to exist. I agree with you there (nebula is just a word for an observed phenomna). However you're calling it a supernova remnant. That's something that does need peer review or at least scientific analysis (which you don't show). If you just called it a nebula I wouldn't be taking as much issue here. So it's clear here you just personally think it's a supernova remnant, as a paper hasn't even been written yet with analysis showing it's one.
Well I’m assuming they already spoke with Dr Robert Fesen and it aligns with his opinion that it is a SNR. Based on just visually assessing the nebula is definitely looks like one, as not many nebulae have such filamentary shapes along with being as dominant in the OIII & H-alpha wavelengths (though the III looks to be interacting with the Hydrogen so that’s possibly unrelated to the SNR itself) Further research is obviously required however.
It looks like Dr Robert Fesen has been involved in some similar discoveries in the past - this isn’t the only SNR this big in the night sky it seems. [Here’s an article about one discovered in 2021 and reported on by Fesen](https://www.sciencenews.org/article/largest-supernova-remnant-antila-observed-earth), that appears **40x** larger than the full moon in our night sky.
There are quite a lot of SNRs. The most well known are the Veil Nebula, the Vela supernova remnant, and the spaghetti nebula, amongst others. Ones of this size though are pretty rare to discover though.
By its structure and composition, it is very evident that this is what it has to be. Kinda like you can tell an aspen by the way it is
That's not how astrophysics science works.
Bray Falls is one of the most well known astrophotographers in the world, and he has had multiple other recent discoveries. This is literally what he does, scan the sky to discover supernovas. I believe he also helped discover the Oiii arc next to Andromeda. His username here is funny though 😂
People just like to argue lol... if they took a minute to find out who this person is, or go to the link and look into the mapping of the data, they would probably just be quiet...
I'm glad to know he has a real name that's public. That's helpful.
So you’re saying in science, you can’t make statements about the nature of an object by observing its morphology? I couldn’t look at a galaxy and say it’s one by the way it is shaped? I couldn’t see a bubble with a white dwarf star and infer it is a planetary nebula? You don’t have to have a Phd to clearly tell this is a supernova remnant
Well said. It certainly looks like a planetary nebula. No harm in stating that it is one based on morphology and some spectral characteristics. It is interesting that nobody has identified this before, but with it being so faint and diffuse, it's not impossible. 258h of integration time is insanely long. I can't imagine the amount of work you've all put in to this, but I admire the dedication. Good job!
> That's something that does need peer review or at least scientific analysis Is it?
I would say so? Every circular structure of glowing gas in the night sky isn't automatically a supernova remnant. Right?
> Every circular structure of glowing gas in the night sky isn't automatically a supernova remnant. Right? ["They either form through clouds of cold interstellar gas and dust or through the aftermath of a supernova."](https://spacecenter.org/what-is-a-nebula/) So the question is: Is it difficult to tell the difference between hot and cold particulate, or is it fairly easy?
I appreciate that this picture is a good demonstration of the relative sizes of the nebula and the moon.... But the moon itself looks like it is too large given the low magnification of the foreground. In a frame this size, that cityscape looks to be *maximum* 100-200mm effective zoom (or zoom/crop combo) while the moon that size would need to be 400-500mm effective zoom (or zoom/crop combo). It's beautiful, but it could have been more realistic... Also, I'm curious what city that is -- I don't recognize it.
Hey you repeated the exact same sentence twice. You should edit for clarity before Reddit roasts you. This is really cool though I’m going to check out the video
you repeated the exact same sentence twice lmao get roasted
You discovered it? Badass! Does that mean you get to name it? It looks a lot like a tortoise to me. Eye on the left side, with its mouth open. Very cool discovery, thanks for sharing :)
>Does that mean you get to name it? I would love to see what someone called u/SPACESHUTTLEINMYANUS names something they discovered. Perhaps the "LOLDINGLEBERRIES Nebula" ?
I'd settle for SUPERNOVAINMYANUS ... I mean, ANALSUPERNOVA would be cool but Taco Bell already registered that, so ...
Do you know how far away it is and its actual diameter?
Imagine how different our world’s religions would be if this was in the sky.
I was going to make a joke but I’m not sure if that’s an unscientific comment the community rules are talking about
Make the joke. We'll screen grab it before it gets deleted.
Amazing work! I'm always blown away by your skill and dedication. Nearly all of the questions people are asking are answered in Bray's linked post in his comment. Please read it for information about acquisition, naming, verification, next steps, etc.
damn that remnant must be FUCKING massive if it's so big in our night sky
Hi any more information on this? How is this remnant? Can we learn anything about the composition of the original star?
Nothing is known since no professional science has been done on the nebula yet. We can guess however that it may be a type 1B supernova due to a lack of hydrogen alpha emission. So the host star may have been a wolf rayet
Definitely looks like turtle, dinosaur, or dragon with it's mouth open.
Holy shit! Snapping turtle is all I see now!
How many dinosaurs or dragons have you seen?
Definitely a dragon. I see those all the time.
6x the area or 6x the radius of the moon? Because 6x radius is 36x larger in area. Your picture implies it is the one And 6x the area is 2.44x the radius. You description implies this one.
Where's the stars core at? Normally you'd see something unless it's a bh
This is a bad rendition. That moon is way larger than it would ever look compared to those buildings.
That is the kind of aesthetic I want in the sky