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A Galaxy Crashes at 2 Million MPH, Creating One of the Most Powerful Shock Waves Ever Seen
Astronomers have observed a cosmic collision of extraordinary magnitude as the galaxy NGC 7318b plowed into its ... intricate gravitational dance located 290 million light-years from Earth.
Astronomy on MSN7mon
How to grasp the scale of the cosmos from your backyard
Four of the galaxies - NGC 7317, 7318A, 7318B, and 7319 (comprising Hickson Compact Group 92) lie some 290 million ...