The Shocking Size of Comet McNaught

(PhysOrg.com) -- 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. Instead of using the length of the tail to measure the scale of the comet, the group have used data from the ESA/NASA Ulysses spacecraft to gauge the size of the region of space disturbed by the comet's presence.

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