Earth has additional moons, and they may hold secrets about our solar system's past

The solar system holds many secrets that scientists are still trying to uncover. To help shed light on these mysteries, researchers are turning to space rocks of all kinds that may hold clues to the lost story of our solar system's past. This approach is already paying off: in October 2023, NASA did just that OSIRIS-REx mission Discover water and carbon – Two precursors of life on Earth – on the 4.5 billion-year-old asteroid Bennu.

Among the thousands of asteroids clustering near Earth's orbit, minibodies — small cosmic bodies, whose orbits are partly governed by Earth and partly by other bodies in the solar system — may be prime candidates for learning about the origins of the solar system. Richard Benzelprofessor of planetary sciences at the Massachusetts Institute of Technology.

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