For a long time, scientists thought that only actively star-forming galaxies should be observed in the very early Universe. The James Webb space telescope now reveals that galaxies stopped forming sta ...

They found generally broad agreement in size, shape and density. The simulated galaxies didn't look anything like real galaxies. But that's the point: The researchers wanted to examine whether simple ...

It challenges what we know about how galaxies form. Picture a galaxy like our own Milky Way: a flat, rotating structure made up of stars, gas and dust, often surrounded by an extensive halo of ...

Your Artstor image groups were copied to Workspace. The Artstor website will be retired on Aug 1st. Publications of the Astronomical Society... Publications of the Astronomical Society of the Pacific ...