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NASA's DART Impact Altered Asteroid's Orbit Around the Sun, Study Finds
The DART impact shortened Dimorphos’ orbit by 33 minutes and reduced the binary system’s solar orbit time by 0.15 seconds, confirming kinetic impactor effectiveness.
- Published March 6 in Science Advances, researchers reported the Didymos–Dimorphos system's velocity decreased by roughly 11.7 micrometers per second after the DART impact.
- NASA's DART spacecraft rammed Dimorphos in September 2022, and impact ejecta acted like an extra rocket plume, roughly doubling the momentum transfer with a beta parameter near two.
- Using 22 stellar occultations and nearly 6,000 ground-based astrometric measurements, researchers detected the orbit shrank by about 1,200 feet and 0.15 seconds.
- Despite the tiny change, teams emphasize Earth remains safely out of the asteroids' path, and the study advances planetary-defense planning with European Space Agency's Hera spacecraft arriving later this year.
- Questions remain about the impact's precise contributions, and researchers say Hera spacecraft's survey later this year will clarify Dimorphos' post-impact shape and mass, while scientists note small early impulses can accumulate over years.
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The Dart mission was more successful than they thought.
·Bratislava, Slovakia
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A NASA mission successfully tests the defense of an asteroid disaster. The impact of a probe now even changes the orbit of the entire system around the Sun. The effect is greater than expected and is based on a surprising principle.
Cape Canaveral., An asteroid that NASA used as a target for shooting practices a few years ago was diverted to a slightly different route around the Sun, which could help divert a future lethal space rock, scientists reported on Friday.
·Mexico
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Total News Sources214
Leaning Left31Leaning Right19Center100Last UpdatedBias Distribution66% Center
Bias Distribution
- 66% of the sources are Center
66% Center
L 21%
C 66%
13%
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