The European Space Agency’s Gaia mission has spotted an unusual family of stars all strangely eager to leave home – a family we couldn’t have discovered without the star-surveying spacecraft, and one unlike all others we have spotted to date.
Stars in the Milky Way tend to form in families, with similar stars springing to life in roughly the same place at roughly the same time. These stars later head out into the wider galaxy when they’re ready to fly the nest. While smaller groups can completely dissipate, siblings from sizeable families usually move similarly and largely travel together.
We have seen many star families with Gaia...
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