A new comet has recently been discovered, and like the brilliant Comet McNaught from earlier this year, this latest discovery belongs to an Australian: Comet Lovejoy (C/2007 E2). On March 15th, Terry Lovejoy of Thornlands, Queensland, Australia, discovered a 9th-magnitude comet in the southern constellation Indus the Indian. In reporting the find to the Central Bureau for Astronomical Telegrams (CBAT), in Cambridge, Massachusetts, Lovejoy described the comet as having a coma that appeared distinctly green in color, with a slight extension to the southwest. Remarkably, Lovejoy made the discovery not with a telescope but using an off-the-shelf digital camera! In...