Biggest Comet Measured to Date: Comet McNaught

Comet McNaught viewed over the Pacific in 2007. (Credit: Sebastian Deiries/ESO)

From Science Daily:

ScienceDaily (Apr. 14, 2010) — British scientists have identified a new candidate for the biggest comet measured to date. Dr Geraint Jones of UCL's Mullard Space Science Laboratory presented the results at the RAS National Astronomy Meeting in Glasgow on April 13. Instead of using the length of the tail to measure the scale of the comet, the group used data from the ESA/NASA Ulysses spacecraft to gauge the size of the region of space disturbed by the comet's presence.

Read more ....