Some of the fastest stars in the Milky Way come from other galaxies

Extreme-velocity stars, which travel through the Milky Way with speeds of hundreds of kilometres per second, may come from dwarf galaxies that our own galaxy gobbled up

Some of the fastest stars in the Milky Way come from other galaxies
Extreme-velocity stars, which travel through the Milky Way with speeds of hundreds of kilometres per second, may come from dwarf galaxies that our own galaxy gobbled up