Star visible to naked eye reveals clues about ancient Milky Way collision

The researchers believe the galactic merger of Gaia-Enceladus and Milky Way began around 11.6 billion years ago (Owen Humphreys/PA)
The researchers believe the galactic merger of Gaia-Enceladus and Milky Way began around 11.6 billion years ago (Owen Humphreys/PA)