Impeded by a malfunction back in May 2013, NASA's Kepler spacecraft (pictured in illustration) is once again finding alien planets. The first world it discovered on its new mission is HIP 116454b, a "super Earth" about 20,000 miles wide and 12 times more massive than our planet. It's believed to be either a water world or contain a thick atmosphere like Neptune. More at Space.com.

Pictured: An artist's illustration of Kepler working on its new mission profile called K2.