... In our neck of the Galaxy stars are too far apart to be in danger of colliding, but in the dense cores of globular star clusters star collisions may be relatively common. ... Dramatic dust lanes that run across the galaxy's center mark Cen A. These dust lanes are so thick they almost completely obscure the galaxy's center in visible light. ... The Virgo Cluster of Galaxies is the closest cluster of galaxies to our Milky Way Galaxy. ... Ice Fishing for Cosmic Neutrinos . ... Moons and Bright Mars . ...