... 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. ... Jupiter's most active moon is visible on the left of the above false-color photograph, with its left side illuminated by sunlight. ... The Frothy Milky Way . ... Big Sky Comet . ...