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NASA just shut down a planetary defence mission that tracks asteroids. Now what?

  • Written by Steven Tingay, John Curtin Distinguished Professor (Radio Astronomy), Curtin University
NASA just shut down a planetary defence mission that tracks asteroids. Now what?Artist's impression of NEOWISE spacecraft.NASA/Caltech-JPL

Launched in 2011, NASA’s NEOWISE mission operated in Earth’s orbit until late last week. It detected more than 3,000 near-Earth objects or NEOs – asteroids or comets whose orbits can bring them close to Earth, even with the possibility of a collision. NEOWISE was shut down...

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