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Help find weird comet-like asteroids that could reveal solar system secrets



Comets are comets, and asteroids are asteroids … except when they’re not. Some asteroids appear to be active, forming the familiar comae, and even tails, of their cometary cousins. Astronomers know of only a few dozen examples of these active asteroids, but they suspect more are out there — and you can join the hunt. The asteroids you spot could unlock secrets about the history of the solar system.

Asteroids are relatively simple. The leftover bits of stillborn rocky planets, they are rich in carbon, iron and other heavier elements. They’re basically just big balls of rock. 





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