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According to NASA, a CME travels at 1.5 million miles per hour, which is 2000 times the speed of sound, but only about 1/500 the speed of light, which is 669,600,000 mph. Since Earth is an average of 91.5 million miles from the Sun, a CME takes 91.5 / 1.5 = 61 hours, or about two and a half days, to travel to us from the Sun, at which point it can cause spectacular aurorae.

2006-11-01 02:24:40 · answer #1 · answered by DavidK93 7 · 1 0

The velocity averages 3/4 Impulse, or about 3/4 the speed of light. 300000kps.

2006-10-25 13:12:41 · answer #2 · answered by hrwwtp 4 · 1 0

African or European?

2006-10-25 10:29:39 · answer #3 · answered by picopico 5 · 0 0

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