In Depth | Kuiper Belt – NASA Solar System Exploration
Researchers have found that some near-Earth asteroids are actually burned-out comets, and most of them would have started out in the Kuiper Belt. Many comets crash into the Sun or the planets.
Recent Great Comets - NASA Solar System Exploration
We have been privileged to have recently witnessed two bright comets in consecutive years: Comet Hyakutake in 1996 and Comet Hale-Bopp in 1997. As an added bonus, the Comet Shoemaker-Levy …
Directory - NASA Solar System Exploration
Oct 21, 2025 · BY DESTINATION Earth (1) Mars (2) Jupiter (95) Saturn (83) Uranus (27) Neptune (14) Pluto (5) Asteroids, Comets & Meteors About Asteroids, Comets & Meteors BY TYPE Meteors & …
In Depth | Earth's Moon – NASA Solar System Exploration
With too sparse an atmosphere to impede impacts, a steady rain of asteroids, meteoroids, and comets strikes the surface of the Moon, leaving numerous craters behind.
Feedback – NASA Solar System Exploration
About Moons BY DESTINATION Earth (1) Mars (2) Jupiter (95) Saturn (83) Uranus (27) Neptune (14) Pluto (5) Asteroids, Comets & Meteors About Asteroids, Comets & Meteors BY TYPE Meteors & …
In Depth | Phobos – NASA Solar System Exploration
Solar System Our Solar System Sun Kuiper Belt Oort Cloud Beyond Our Solar System Eclipses Planets About Planets Moons About Moons Asteroids, Comets & Meteors About Asteroids, Comets & …
In Depth | 21P/Giacobini-Zinner – NASA Solar System Exploration
Comets are usually named for their discoverer (s) or for the name of the observatory/telescope used in the discovery. Since both Michel Giacobini and Ernst Zinner discovered and recovered this comet it …
In Depth | Sun – NASA Solar System Exploration
The Sun orbits the center of the Milky Way, bringing with it the planets, asteroids, comets, and other objects in our solar system. Our solar system is moving with an average velocity of 450,000 miles …
Pluto By the Numbers - NASA Solar System Exploration
Oct 21, 2025 · Pluto was once our solar system's ninth planet, but has been reclassified as a dwarf planet. It's located in the Kuiper Belt.
In Depth | Titan – NASA Solar System Exploration
The instruments found Titan’s nitrogen isotope ratio most resembles that found in comets from the Oort Cloud—a sphere of hundreds of billions of icy bodies thought to orbit the Sun at a distance between …