Further Reading

G. Popkin. “Oort cloud tosses astronomers a cometary curveball.Science News. Oct. 25, 2013.

 

S. McDonagh. “Catching a comet's tail.” Science News for Kids. Jan. 12, 2004.

 

You can track ISON's progress by visiting this website: http://www.cometison2013.co.uk/perihelion-and-distance/