Some Sungrazing Comets May Be Different Beasts

Some comets like to play "chicken" with the sun, but a small number of these sungrazers may not be comets at all.

November 21, 2016
7:00 AM EST
Comet ISON, one of SOHO's most famous observations, is captured in a timelapse in 2013 (ESA/NASA/SOHO)
Artist's impression of the SOHO spacecraft, with the sun in the background. | Credit: NASA