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Submission + - Meteor Trails Could Reveal Other Objects on Collision Course with Earth (sciencemag.org)

sciencehabit writes: Want to know if that meteor that just struck Earth has a companion? Take a look at its trail. A new study shows that images of a meteor’s streak through the atmosphere taken by Earth-gazing probes, including weather satellites, can pin down the object’s orbit, enabling scientists to check and see whether another planet-threatening object is traveling in the same trajectory. The threat to our planet from an object’s orbital companions isn’t merely an abstract concern: One recent study suggests that about 15% of the asteroids that cross Earth’s path may be part of double or triple asteroid systems.
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Meteor Trails Could Reveal Other Objects on Collision Course with Earth

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