Astronomers have spied an aurora beyond our solar system for the first time, lighting up the pole of a failed star that's cool in multiple ways.
NASA's Dawn spacecraft finds that the largest object in the asteroid belt is also a huge mystery, as the craft takes a closer look.
In a just-held briefing, NASA says that Pluto's "heart" will be named for the dwarf planet's original discoverer, a dark spot on moon Charon is called "Mordor," and Pluto is a relative newborn.
Using a series of photos captured by the Dawn spacecraft, along with the addition of a background star field, NASA has created a fun trip around Ceres.
Ceres appears to have a pair of cosmic headlights reflecting the sun. As NASA's Dawn spacecraft approaches, they're looking smaller, but no less mysterious.
Dawn has taken the closest pictures yet of the dwarf planet and started to illuminate the nature of its most glaring mystery.
Dawn's first color map of Ceres shows the dwarf planet's mottled surface hints at a vibrant and active past.
Researchers have found rare satellite dwarf galaxies and candidate dwarf galaxies in orbit around our Milky Way, the largest number of such satellites ever found in one go.
The Dawn space probe will take a much closer look at Ceres' mystery lights now that it is in orbit around the protoplanet.
It's a real-life mystery cliffhanger. We've come up with a list of possible reasons a large crater on the biggest object in the asteroid belt looks lit up like a Christmas tree.