Watch NASA fire up its SLS rocket engines to test far-out mission technologies (video)

While NASA has yet to launch an Artemis mission to the moon, the agency is already doing engine testing for far-future missions. NASA finished its sixth RS-25 engine hot-fire test on Thursday (Aug. 5), demonstrating advanced capabilities of an engine type that was used for decades during the space shuttle program that ran from 1981 to 2011.  Engineers fired the  RS-25 engine, made by the California-based aerospace company Aerojet Rocketdyne, at NASA’s Stennis Space Center in Mississippi for 500 seconds (more than eight minutes) to duplicate the time it will…

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Mercury-bound spacecraft snaps selfie with Venus in close flyby (photo)

A European-Japanese BepiColombo probe headed to Mercury zoomed past Venus on Tuesday (Aug 10), beaming back selfies and other measurements that might reveal new facts about the cloudy planet’s atmosphere. The European Space Agency (ESA), which cooperates on this mission with the Japan Aerospace Exploration Agency (JAXA), released the first Venus flyby image, taken shortly after BepiColombo’s closest approach to the planet, on Tuesday evening (Aug. 10). During the encounter, the probe zipped within 340 miles (552 kilometers) of Venus. More images are expected to follow, ESA has said. The…

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Watch auroras paint the sky above Earth in these stunning astronaut photos and video

It’s aurora season on the International Space Station and astronauts living and working in orbit are sharing some of their finest views of the stunning phenomenon with those of us on the ground. Auroras paint the sky with eerie shades of greens and reds and occur when charged particles from the sun slam into Earth’s atmosphere. Circling the North Pole, the spectacle is dubbed the aurora borealis or northern lights; the southern equivalent is the aurora australis. The latter has been particularly prolific for the past week or so, according…

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