The universe suddenly looks a lot more crowded, thanks to a deep-sky census assembled from surveys taken by the Hubble Space Telescope and other observatories.
Astronomers found RR Lyrae stars at our Milky Way galaxy's core. They now believe ancient globular star clusters may have merged to form the core of the Milky Way.
These Tatooine worlds, as they're called, might be the ultimate survivors, as their 2 stars begin aging in ways that are sometimes threatening or even catastrophic.
Astronomers have found another possible rogue black hole, with about 100,000 times our sun's mass. It may have come from a small galaxy falling into a larger one.
Saturn's moons Titan and Enceladus are already known to hide oceans beneath their icy crusts. Researchers think there's an ocean deep in Saturn’s moon Dione as well.