The ISS will be retired at the end of the decade. Here’s an inside look at what could be next.

The ISS will be retired at the end of the decade. Here’s an inside look at what could be next. – CBS News

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Astronauts opened the hatch to the International Space Station for the first time 25 years ago. The station will be retired at the end of the decade and there’s a new type of space race on to replace it. CBS News’ Mark Strassmann reports.