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Perhaps the biggest of all the snacks the Milky Way has had since the Gaia Enceladus breakfast is the Sagittarius Dwarf Spheroidal Galaxy which first fell in about 5 billion years ago.
Perhaps the biggest of all the snacks the Milky Way has had since the Gaia Enceladus breakfast is the Sagittarius Dwarf Spheroidal Galaxy which first fell in about 5 billion years ago.