When NASA crashed its DART spacecraft into the asteroid Dimorphos, the goal was to shorten the space rock's orbit around its parent asteroid. The mission succeed - but Dimorphos's orbit has continued to shrink and it isn't clear why
NASA/ESA/STScI/Hubble
A high school teacher and his students have discovered that an asteroid hit by a NASA spacecraft, in a test-run for saving Earth from a collision, is behaving unexpectedly. The find could have implications for future planetary defence missions.. The goal was to slow the space rock’s nearly 12-hour orbit around a parent asteroid, called Didymos, and see …
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