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Nov 24, 2015 02:33 PM ET // Ian O'Neill
An infrared NASA space telescope has been keeping tabs on dozens of comets and has revealed huge quantities of carbon monoxide and dioxide being vented into interplanetary space.
Nov 16, 2015 02:10 PM ET // Mark Thompson
The Earth is currently orbiting through the debris of Comet Tempel-Tuttle -- yes, it's time for the Leonid meteor shower!
Nov 10, 2015 03:10 PM ET // Mark Thompson
The Halloween 'dead comet' spooked the world with its abrupt appearance, why didn't we know about it earlier?
Nov 9, 2015 01:45 PM ET // Elizabeth Howell
What's with those asteroids that are streaming dust, just like a comet? One researcher explains how this could happen.
Nov 3, 2015 01:00 PM ET // Elizabeth Howell
How does a comet come to life and then fade away? This is one of the questions comet-hunters hope to answer with the James Webb Space Telescope.
Nov 3, 2015 08:35 PM ET // Jason Major
The spooky 'Halloween Comet' of 2015 got its close-up radar snap-shot and astronomers now hope to figure out whether or not is is a dead comet.
Oct 30, 2015 05:32 PM ET // Ian O'Neill
Europe's Rosetta mission has found that Comet 67P/Churyumov-Gerasimenko is spewing molecular oxygen into space -- why would this be a bad thing for the hunt for extraterrestrial life?
Oct 28, 2015 01:45 PM ET // Irene Klotz
The comet being studied by Europe’s Rosetta spacecraft contains molecular oxygen, a surprising discovery that will force scientists to rethink details of how the solar system formed.
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