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In September 2022, NASA's Double Asteroid Redirection Test successfully demonstrated how a fast-moving spacecraft could change an asteroid's trajectory by crashing into it, potentially providing a way to defend Earth—though the asteroid in this test was never a real threat. A followup study suggests that debris from the 525-foot (160-meter) Dimorphos could actually strike back, though we're not in any danger. The team posits that the collision produced a field of rocky ejecta that could reach Earth within 10 years. The research is currently hosted on the preprint server arXiv and is set to publish in The Planetary Science Journal.
The DART mission was so important because it showed that humankind actually does have a way to defend itself from the existential threat of incoming space rocks, like the one that ended the dinosaurs' primacy on Earth some 66 million years ago. The DART team was a winner of the 2023 Gizmodo Science Fair for this superlative accomplishment in planetary defense.
Particles from the impact could get to Mars in seven to 13 years, and the fastest particles could make it to our own world in just seven years. ⁘This detailed data will aid in the identification of DART-created meteors, enabling researchers to accurately analyze and interpret impact-related phenomena,⁘ the team wrote in the paper.
When the Chicxulub asteroid slammed into Earth, it set off a chain of planet-wide devastation. New research suggests we should blame Jupiter.
Data from the James Webb Space Telescope indicates Psyche could be covered in water and a chemical that combines with iron to form rust.
NASA put out a request for the private sector to take over its VIPER rover, and Intuitive Machines answered the call.
Seismic speed data from NASA's decommissioned InSight lander strongly hints at the presence of liquid water on Mars.
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