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upstart writes:

A five-minute test only lasted for five seconds:

The International Space Station sometimes has to shift its path to stay in the right orbit or to avoid debris (like it did last week). Usually, the ISS crew calls on Russian equipment to provide the thrust for the adjustments, but NASA tried to use a Northrop Grumman Cygnus cargo craft in a "reboost" test on Monday. It didn't go as planned.

Cygnus-17 was supposed to fire its engine for a little over 5 minutes, but the firing aborted after just 5 seconds. In a statement on Monday, NASA said the "the cause for the abort is understood and under review," but didn't elaborate on what happened.

The ISS flies in a low Earth orbit, and the planet's atmosphere is constantly dragging on it. Regular reboosts help the station stay in orbit. "The reboost is designed to provide Cygnus with an enhanced capability for station operations as a standard service for NASA," the space agency said.

[...] SpaceX founder Elon Musk suggested in February that SpaceX's Dragon capsules could also handle reboost duties if needed.

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