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His SpaceX rocket company is one of NASA’s biggest contractors, relied upon to service the International Space Station.

At Christmas, astronauts on the International Space Station posted a festive message in which they wished their friends and family on Earth a merry Christmas.

Nasa astronaut Suni Williams, one of two astronauts stuck on the International Space Station, ventured outside for a spacewalk on Thursday for the first time since arriving on board seven months ago.

"There are benefits to having that commercial side, we now are going up to the International Space Station in commercial vehicles and, without that, it's difficult to say where we would be."

We also have something right above the atmosphere over our heads that is perhaps the most powerful symbol of collaboration, diversity, and inclusion, and represents the best of humanity: the International Space Station.