SUNSET: 
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.
Supergiant Star Caught Fleeing In Another Galaxy
The discovery of a runaway star in the Small Magellanic Cloud suggests that runaway stars are a common phenomenon in the 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.
