Our solar system is speeding through the galaxy at more than three times the velocity scientists once believed, according to ...

The Milky Way and Andromeda galaxies are predicted to collide and merge between 3.9 and 5.6 billion years from now, based on observed relative motion. The merger process will involve multiple ...

It's the third of a generous five Saturdays in the month of November. What did we do to deserve such a bounty of days off? In ...