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The solar wind speed at Earth normally lies around 300km/sec but increases when a coronal hole high speed stream (CH HSS) or coronal mass ejection (CME) arrives. During a coronal mass ejection impact, the solar wind speed can jump suddenly to 500, or even more than 1000km/sec.
Mercury makes one trip around the sun faster than any other planet, but this is in part because it is close to the sun. Mercury orbits at a speed of about 74.87 km/s. The plan â¦ et with the faster orbital velocity is Neptune, moving with a speed of about 5.43 km/s.