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Jupiter's mysterious moon Amalthea spied crossing the Great Red Spot (photo)
New York Times best-selling author revisits 1986 space shuttle tragedy in 'Challenger' (interview)
Helium leak delays Boeing's 1st Starliner astronaut launch to May 21
Giant 'rogue waves' of invisible matter might be disrupting the orbits of stars, new study hints
The summer of 2023 was Earth's hottest in 2,000 years, scientists find
SpaceX launches 20 Starlink satellites on 50th mission of the year (video)