Astronomy Cast 324: Sun Grazers

by Fraser Cain on December 2, 2013

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Comets can spend billions of years out in the Oort Cloud, and then a few brief moments of terror orbiting the Sun. These are the sun grazers. Some survive their journey, and flare up to become the brightest comets in history. Others won’t survive their first, and only encounter with the Sun.

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Fraser Cain is the publisher of Universe Today. He's also the co-host of Astronomy Cast with Dr. Pamela Gay.

IVAN3MAN_AT_LARGE December 2, 2013 at 3:54 PM

“Comets can spend billions of years out in the Oort Cloud, [...]“.

SupernovaElite December 2, 2013 at 7:09 PM

On a related note, Pamela is so beautiful!

Steven Kolins December 3, 2013 at 8:19 AM

Does anything in the history of variation in ISON’s brightness and gas/dust balance suggest the kind of complex layering of material suggested by Deep Impact’s analysis of Temple 1?? Have we ever seen a body in the solar system without an impact? Can we get passed “primordial”? And what about space weathering? Supernova’s in the vicinity of the Earth over the last 4 billion years? How primordial can they really be?

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