A Rare Hybrid of a Comet And an Asteroid Is Showing Off Its Cometary Traits – ScienceAlert

Centaurs are rare celestial objects that can combine some of the different features of asteroids and comets. They’re basically rocky in nature, like asteroids, but can also throw out clouds of dust and gas as their exteriors vaporize, like comets.
When centaurs emit these gases, they’re considered active. We’ve only ever found 18 chemically active centaurs in the last century or so, but now a new one has been added to the list and it might be able to tell us more about how these mysterious flying…

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