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WATCH LIVE: All-female spacewalk at ISS

NASA astronauts Christina Koch and Jessica Meir venture outside the space station for the first all female spacewalk to replace a battery charge/discharge unit.

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WTOP photo tour: Historic nuclear power plant at Fort Belvoir to be dismantled

By Neal Augenstein
The red button was always there — just in case. Most people never knew the United States' first nuclear power reactor to provide sustained electricity to a commercial power grid was — and is — on the grounds of Fort Belvoir, the U.S. Army installation in Fairfax County, Virginia.
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