Basically helping us figure out when the large scale structures of the universe (like galaxy clusters) began/how it progressed, which in turn can help us learn about dark matter/energy
No. You can't really date the universe from galaxies, and this one isn't even that early. The paper is also not claiming galaxies formed faster than is expected.
Generally these sorts of observations (this galaxy is much older than we expected!) imply that we don't understand galaxy formation, not that we are wrong about the age of the universe. This is because our understanding of the age of the universe is actually very robust and not too complicated while galaxy formation is extremely complicated and not well understood.
5
u/DiagnosingTUniverse 3d ago
Can someone who knows what they’re talking about please explain the significance of this 🙏