... A Galactic Cloud of Antimatter . ... The center of our Milky Way Galaxy is full of surprises. ... Milky Way Molecule Map . ... Where are the Milky Way's gas clouds and where are they going? Stars form in gas clouds, and the motion of gas clouds tell us about the size and rotation speed of our own Milky Way Galaxy. Hale-Bopp and Orion . ... Comet Hale-Bopp is still brighter than most constellations. ... The Frothy Milky Way . ... Meet Antlia, a newly discovered neighbor of our Milky Way Galaxy. ...