Add Yahoo as a preferred source to see more of our stories on Google. This illustration shows a possible view from Earth of the early stages of a predicted merger billions of years from now between ...

Multi-epoch Hubble Space Telescope imaging, tracked over five to seven years, has produced the first direct measurements of ...

A vast, flat sheet of dark matter may solve the long-standing mystery of why our neighboring galaxy Andromeda is speeding toward us while our other neighbors are moving away from us. The structure of ...

Exciting new simulations reveal that our Milky Way could gracefully dodge a direct encounter with Andromeda. What once seemed ...