Astronauts Are Taking a Tricky Spacewalk to Fix a Dark Matter Experiment. Here's How to Watch

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Two astronauts are taking one of the most complicated spacewalks in NASA history today (Nov. 15) to revive an ailing $2 billion experiment on the International Space Station and you can watch it live online.

Astronauts Are Taking a Tricky Spacewalk to Fix a Dark Matter Experiment. Here's How to Watch : Read more