iOS app Android app

Oort Cloud

Did Comets Deliver Earth's Oceans?

David J. Eicher | Posted 09.30.2013 | Science
David J. Eicher

Because comets contain large amounts of water and other ices, the notion that bombardments by comets deposited much of Earth's water has seemed to be almost a measure of faith. But a variety of recent studies place this idea into a somewhat harsh context.

Waiting for ISON

David J. Eicher | Posted 05.05.2013 | Science
David J. Eicher

Living our 2-D lives on planet Earth, arguing over Sequestration and who has the remote, we tend to forget that the solar system is a cosmic shooting gallery. Comets serve as windows into the solar system's primitive past, and in 2013 we have two icy treats.

Awesome Sky Show Expected From Newly Discovered Comet

| Posted 10.07.2012 | Science

By Michael Moyer As it flares out of the distant Oort Cloud, the newly discovered comet C/2012 S1 (ISON) appears to be heading on a trajectory that c...