Twelve million light years away, a galaxy is throwing a tantrum on a cosmic scale. M82, the Cigar Galaxy is forming stars at ten times the rate of our own Milky Way, and all that frenzied activity has been blasting superheated gas outward in a colossal wind stretching 40,000 light years. Scientists have long known the wind exists, but now, for the first time, they've measured exactly how fast it's moving and the answer raises as many questions as it answers.
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