Astronomers have never seen this side of Mercury until now. The image was taken from a Nasa spacecraft 125 miles away
** Longest space walk **
The record for the longest ever space walk was broken from 10-11 march 2001, when mission specialist James voss and Susan Helms stepped outside space shuttle “discovery STS-102” to do construction work on the space station. Their EVA (extra vehicular activity) lasted 8 hours and 56 minutes.
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