Hot Jupiters have masses like our Jupiter, but orbit their stars closely. They often have cloud or haze layers, which, a new study says, may hide atmospheric water.
Asteroid 2016 HO3 is Earth's nearby companion in space. It's not a second moon, but it has an orbit so similar to ours that it'll remain nearby for hundreds of years.
Astronomers propose a search for a theoretical kind of planet known as carbon planets, aka diamond planets. They say such planets might have been habitable.
Comet C/2013 X1 (PanSTARRS) isn't visible to the eye, but binoculars can pick it up. Charts and other info that can help you spot the comet in the coming weeks!