When galaxies collide, such as the Andromeda galaxy racing toward the Milky Way at 110 km per second to collide in 4.5 billion years, the night sky will transform with trillions of stars rearranging, but almost none of the stars will actually touch each other because galaxies are mostly empty space.
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Two Galaxies Will Collide and Nothing Will HitAdded:
Andromeda is racing toward the Milky [music] Way at 110 km per second and will collide in 4.5 billion years.
The night sky will transform completely.
Trillions of stars will rearrange.
And almost none of them will actually touch each other.
Galaxies are that empty.
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