This photo of Halley's comet was taken by the Russian Vega 2 spacecraft, one of two Soviet probes (Vega 1 was the other) to rendezvous with the comet during its 1986 trip through the solar system ...

Halley's Comet is one of the most influential spheres of dust, ammonia, and water ice to ever cruise through our solar system. It's the source of two annual meteor showers on Earth.

This photograph of Halley's Comet was taken January 13,1986, by James W. Young, resident astronomer of JPL's Table Mountain Observatory in the San Bernardino Mountains, using the 24-inch ...