On the galactic scale, 2.5 million light-years distance means the next-door neighbor.
Knowing that The Andromeda Galaxy is approaching the Milky Way at about 110 kilometers per second (68 miles per second) makes the word "proximity" even more meaningful.
Special Christmas 1/1 drop.
The emission nebula created by the young, energetic stars in the cluster resembles a Christmas Tree. The hydrogen atoms are dying with the radiation from the stars and resurrecting as a glowing new type of hydrogen atom called hydrogen II.
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