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Artist's impression of comets and asteroids around our young sun. | NASA/JPL-Caltech
Tech

This is Why Some Asteroids Act Like Comets: Photos

What's with those asteroids that are streaming dust, just like a comet? One researcher explains how this could happen.

November 9, 2015
1:45 PM EST
The aftermath of a suspected collision between two asteroids, captured by the Hubble Space Telescope. This object is called P/2010 A2. Credit: | NASA, ESA, and D. Jewitt (University of California, Los Angeles)
A view of the disintegrating P/2013 R3 as seen by the Hubble Space Telescope. | NASA, ESA, and D. Jewitt (University of California, Los Angeles)
While Vesta is not an "active" asteroid, it is believed to harbor ice on its surface. | NASA/JPL-Caltech/UCLA/MPS/DLR/IDA
Ice and dust seen erupting from Comet Halley as it got close to the sun in 1986, as viewed by the Giotto spacecraft. | NASA/ESA
The Hubble Space Telescope. | NASA