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Astronomers detect signs of an atmosphere stripped from a planet during giant impact. Such planetary smashups are likely common in young solar systems, but they haven’t been directly observed.

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Ten of the world's most protected forests have become net emitters of carbon, as they are degraded by human activity and climate change. The alarming insight is from a study of planet-warming gases emitted from and absorbed by forests in Unesco World Heritage sites.

Earth’s Magnetosphere: Protecting Our Planet from Harmful Space Radiation

Watch the sun fire off huge solar flares in this mesmerizing NASA video

« Crew Dragon flight to space station delayed. NASA and SpaceX mission managers have decided to delay launch of a Crew Dragon astronaut ferry flight to the International Space Station, pushing liftoff from Sunday to Wednesday because of rough weather in the crew's abort landing zone.

Halloween on the International Space Station »