The Milky Way gobbled up a galaxy one quarter of its mass 10 billion years ago in a "violent collision" that didn't fully settle for eons, astronomers said in new research published Monday.
Europe's Gaia satellite has produced a "stunning" 3-D map, published, of more than a billion stars in our Milky Way galaxy, complete with their distance from Earth, their colour, and their motion through space.
SYDNEY: A new super-detailed hydrogen map of the Milky Way could help explain the mystery of how galaxies form, Australian and German scientists behind the...