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sun activity now~!
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[quote:Anonymous Coward 68734362:MV8zMDIwNzEwXzUzNTc3ODAxX0I4Q0U3QTQx] I found this on nascom.nasa site: The average distance from the Sun to the Earth is 150 million kilometers which can be written as 150 x 10^6 Km. CME's can vary in speed. They can range from 200 km/s to 1000 km/s, although typically, most of them travel at about 424 km/s (Avg 1996-1998 speed St. Cyr et al., 2000). Assuming that CME's don't accelerate or decelerate on their way from the Sun to the Earth, we can easily compute from the numbers given, the minimum travel time, the maximum travel time, as well as the average travel time. time=distance/speed So, the average time it would take a CME to get to the Earth is 98 hrs. At 1000 km/s, a CME would take 42 hrs, and at 200 km/s, a CME would take 208 hrs. [/quote]
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[
link to stereo-ssc.nascom.nasa.gov
]
is this earth facing?
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