When the Hubble Telescope snapped this true-color image in April, NASA scientists found Jupiter staring right back at them. That black dot is Ganymede's shadow, crossing Jupiter's Great Red Spot, creating an eerily blank-looking eye. It is almost certainly the eye of a large and eternally amused monster (after all, Jupiter was, among other things, the "bringer of jollity").

About 260 light years away from Earth, there is a wild exoplanet about the size of Jupiter -- but with double its mass. Known as WASP-43b, this huge planet orbits its host star, an orange dwarf, in just 19 short hours, meaning its “years” are shorter than Earth’s days.