The new group, designated CGG-z4, hosts two optically dark star-forming galaxies. The finding was detailed in a research paper published Jan. 9 on the pre-print server arXiv. Galaxy groups are the ...

But researchers have used the James Webb Space Telescope, a collaboration of NASA and its European and Canadian space ...

An international team of researchers has found dark matter dominating the halos of two supermassive black holes in galaxies ...

it became clear that the Milky Way was only one star system (or galaxy) among myriad others. This was the birth of our modern universe of galaxies, so poetically celebrated in Seeing in the Dark.

Have you ever seen the Andromeda galaxy? Go outside after dark this month and look high up ... What is a “RR Lyrae” star? Consider this: not all stars shine as bright as each other.