Why is there a normal galaxy sitting at the edge of the Universe?
1–10 of 252 posts
Re: Why is there a normal galaxy sitting at the edge of the Universe?
#2Nice gravitational lens observation! We're hoping to use the same technique with the Sun to observe exoplanets by launching a fleet of small satellites to 547 AU (80 billion km / ~3 light days). The craft would sample the distorted Einstein ring around our Sun from that vantage point, then combine and reconstruct an image of the disk of an Earth-like exoplanet up to 100 light-years beyond, at a resolution of 25 kilometers / pixel.
https://orbitalindex.com/archive/2020-07-08-Issue-72/#more-o...
Re: Why is there a normal galaxy sitting at the edge of the Universe?
#3>>> Like this one, it’s not understood how it can exist.
I don't like that phrase. It suggests the possibility that this galaxy might not exist, that this could be observational error. I think it does exist. We understand exactly how it exists because we can observe it existing. The more accurate phrasing might be "it's not understood how it could have evolved so quickly".
Re: Why is there a normal galaxy sitting at the edge of the Universe?
#4> Why is there a normal galaxy sitting at the edge of the universe?
To facilitate the restaurant?
Re: Why is there a normal galaxy sitting at the edge of the Universe?
#5>>> Like this one, it’s not understood how it can exist. I don't like that phrase. It suggests the possibility that this galaxy might not exist, that this could be observational error. I think it does exist. We understand exactly how it exists because we can observe it existing. The more accurate phrasing might be "it's not understood how it could have evolved so quickly".
I think the phrase is fine since according to our best models of galaxy formation these galaxies should not be able to exist and yet they do. As such we don't understand how these galaxies can exist and need to do more research to come up with better models that can explain the existence of these galaxies.
Re: Why is there a normal galaxy sitting at the edge of the Universe?
#6>>> Like this one, it’s not understood how it can exist. I don't like that phrase. It suggests the possibility that this galaxy might not exist, that this could be observational error. I think it does exist. We understand exactly how it exists because we can observe it existing. The more accurate phrasing might be "it's not understood how it could have evolved so quickly".
The article also states that a galaxy making stars at the rate of this new one shouldn't be a disc galaxy.
>the theoretical models are wrong, or at least (and more likely) incomplete.
Re: Why is there a normal galaxy sitting at the edge of the Universe?
#7> Why is there a normal galaxy sitting at the edge of the universe? To facilitate the restaurant?
One must ponder which came first, the universe or the restaurant.
Re: Why is there a normal galaxy sitting at the edge of the Universe?
#8> Why is there a normal galaxy sitting at the edge of the universe? To facilitate the restaurant?
Don't forget your towel!
Re: Why is there a normal galaxy sitting at the edge of the Universe?
#9First thought is that it can be a small blob galaxy in front of a bigger one.
Re: Why is there a normal galaxy sitting at the edge of the Universe?
#10>>> Like this one, it’s not understood how it can exist. I don't like that phrase. It suggests the possibility that this galaxy might not exist, that this could be observational error. I think it does exist. We understand exactly how it exists because we can observe it existing. The more accurate phrasing might be "it's not understood how it could have evolved so quickly".
> that this could be observational error
This could absolutely be observation error. Messups in science happen all the time. You never take a single data point at face value without question, in any field. The spectrum might be polluted by another more distant object, the line matching might have been faked by some other intervening medium, the modelling for the lensing galaxy could be wrong. I agree, it looks good.
But it could totally be a mistake.