HALLOWEEN FIREBALLS: This weekend, Earth could run into a stream of gravelly debris from Comet Encke, source of the annual Taurid meteor shower. The last time this happened, ten years ago in Oct. 2005, the encounter sparked a two-week display of bright meteors called the "Halloween fireballs." Will it happen again in 2015? Visit http://spaceweather.com for more information and observing tips.
Above: A Taurid fireball photographed by Hiroyuki Iida of Toyama, Japan, on Oct. 28, 2005.
