Asteroids, Comets & Meteors - NASA Solar System Exploration
Our solar system’s small bodies – asteroids, comets, and meteors – pack big surprises. These chunks of rock, ice, and metal are leftovers from the formation of our solar system 4.6 billion …
In Depth | Asteroids – NASA Solar System Exploration
Composition The three broad composition classes of asteroids are C-, S-, and M-types. The C-type (chondrite) asteroids are most common. They probably consist of clay and silicate rocks, …
In Depth | Perseids – NASA Solar System Exploration
The Perseids are one of the most plentiful showers with about 50 to 100 meteors seen per hour. They occur with warm summer nighttime weather allowing sky watchers to comfortably view …
Mars By the Numbers - NASA Solar System Exploration
Oct 21, 2025 · Mars is the fourth planet from the Sun, and the seventh largest. It’s the only planet we know of inhabited entirely by robots.
In Depth | Moons – NASA Solar System Exploration
In Depth Moons – also called natural satellites – come in many shapes, sizes and types. They are generally solid bodies, and few have atmospheres. Most planetary moons probably formed out …
In Depth | Phobos – NASA Solar System Exploration
Phobos, gouged and nearly shattered by a giant impact crater and beaten by thousands of meteorite impacts, is on a collision course with Mars. Phobos is the larger of Mars' two moons …
Psyche Raw Image: Imager A - NASA Solar System Exploration
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 & …
Psyche Raw Image: Imager B - NASA Solar System Exploration
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 | Kuiper Belt – NASA Solar System Exploration
The differences between these two types of bodies in the classical Kuiper Belt have everything to do with Neptune. The cold classical KBOs have orbits that never come very close to Neptune, …
Directory - NASA Solar System Exploration
Jan 9, 2020 · Asteroids, Comets & Meteors About Asteroids, Comets & Meteors BY TYPE Meteors & Meteorites Asteroids Comets