An 11th-century monk saw the famous "Halley's comet" first as a child and later as an adult, new research finds.

The British astronomer and mathematician Edmond Halley was not, after all, the first to understand the cycle of the comet ...

(NEXSTAR) — Skywatcher or not, you’ve likely heard of Halley’s comet. As popular as it is, however, seeing it may be a once-in-a-lifetime occurrence for some. The comet, often referred to as just ...