Comet ISON broke apart as it approached the sun in November of 2013, leaving no observable fragments. On Dec. 2, 2013, NASA's team devoted to observing Comet ISON reported that the comet had disintegrated completely only... More » Science Astronomy Comets & Asteroids

Comet ISON entered the inner solar system at a relatively shallow angle above the orbits of the planets, and then it left the inner solar system at a much steeper angle above the ecliptic. ISON spent approximately four m... More » Science Astronomy Comets & Asteroids

John Leary has prophesied famine, a comet called ISON traveling close to the earth and sun, and that the antichrist is an Arab religious man. He also stated that the antichrist was living in England and was going to trav... More » Education

Comet Encke takes a little over three years to complete one orbit around the sun. Observations of the comet date back over 200 years, the second longest in human history. The comet is observable on Earth, and it has a sh... More » Science Astronomy Comets & Asteroids

Recent sightings of great comets, or comets bright enough to be seen without the aid of special equipment, are Comet Lovejoy in 2011, Comet McNaught in 2007, Comet Hale-Bopp in 1997, Comet Hyakutake in 1996, Comet West i... More »

The comet people are most likely to know by name, and therefore perhaps the most famous, is Halley's Comet. This comet can be seen from Earth's about every 75 years, with its next predicted return in 2061. More »

Halley's Comet has an average diameter of 11 kilometers and a mean density of 0.6 grams per cubic centimeter. The length of each rotation is equivalent to 2.2 Earth days. More » Science Astronomy Comets & Asteroids