SUNSET: 
A Chilly Super-Earth May Orbit Barnard's Star
One of the closest stars to the Sun hosts a planet at least three times as massive as our own where temperatures might be just low enough to freeze liquid water.
Some Stars Around Galaxy May Be From Elsewhere
Data from the Gaia satellite reveal 20 new high-speed stars, 13 of which appear to have originated outside of the Milky Way.
Putting the Brakes on the Stellar Baby Boom
Two studies of distant galaxy clusters point to different mechanisms of stopping the baby boom that reigned in the early universe.
Artificial Neural Network Finds Speeding Stars
Astronomers found six runaway stars when they applied a neural network to data from the European Space Agency’s Gaia mission, which is set to map a billion stars across the Milky Way and beyond.
Brown Dwarfs vs. Stars: What Makes a Star a Star?
At what point does a clump of gas ignite, turning into a star? Astronomers now have an answer to what makes a star — and what makes a brown dwarf.
Astronomers Discover Magnetic Bridge Between Magellanic Clouds
A magnetic field appears to span the space between the Large and Small Magellanic Clouds, the two dwarf galaxies being consumed by our Milky Way Galaxy.
Gravitational Lensing Reveals "Iceball Earth" 13,000 Light-Years Away
Astronomers have discovered an "iceball Earth" orbiting a star 13,000 light-years away. Multiple eyes on the sky have revealed some of this world's secrets.