In Depth | Asteroids – NASA Solar System Exploration
Most asteroids are irregularly shaped, though a few are nearly spherical, and they are often pitted or cratered. As they revolve around the Sun in elliptical orbits, the asteroids also rotate, …
In Depth | Oumuamua – NASA Solar System Exploration
The first known interstellar object to visit our solar system, 1I/2017 U1 ‘Oumuamua, was discovered Oct. 19, 2017 by the University of Hawaii’s Pan-STARRS1 telescope, funded by …
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 | Perseids – NASA Solar System Exploration
Meteors come from leftover comet particles and bits from broken asteroids. When comets come around the Sun, they leave a dusty trail behind them. Every year Earth passes through these …
Directory - NASA Solar System Exploration
Jan 9, 2020 · Asteroids, Comets & Meteors About Asteroids, Comets & Meteors BY TYPE Meteors & Meteorites Asteroids Comets
In Depth | C/2012 S1 (ISON) – NASA Solar System Exploration
Additional Resources https://solarsystem.nasa.gov/resources/814/how-nasa-space-assets-observed-comet-ison/ https://www.nasa.gov/mission_pages/asteroids/comet_ison/index.html …
Events - NASA Solar System Exploration
May 18, 2023 · Asteroids, Comets & Meteors About Asteroids, Comets & Meteors BY TYPE Meteors & Meteorites Asteroids Comets
Planet Compare - NASA Solar System Exploration
Oct 21, 2025 · NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.
RPS 3D Viewer - NASA Solar System Exploration
Oct 21, 2025 · Asteroids, Comets & Meteors About Asteroids, Comets & Meteors BY TYPE Meteors & Meteorites Asteroids Comets
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.