Conflicting distance measurements have added to the uncertainty. One data source places one object at 6,500 light years away, ...

A massive filament of gas and dust, designated X7, has been elongated during its long approach to the Milky Way galaxy's ...

The image of M87*, the supermassive black hole at the center of massive elliptical galaxy M87, changed the world. It was the ...

A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the ...