... With our modern calendar, however, the real cross-quarter day will occur next week. Comet Holmes Coma Expands . ... A normally docile comet discovered over 100 years ago, Comet 17P/Holmes suddenly became nearly one million times brighter last week, possibly over just a few hours. ... Comet 17P/Holmes stunned comet watchers across planet Earth earlier this week. ... Tonight, those blessed with clear skies can enjoy a glorious Full Moon, (exact full phase at 0452 UT, October 26). ...