noun
- small rocky bodies orbiting the sun, typically found in the asteroid belt between Mars and Jupiter
Usage: astronomy
Examples
- Scientists study asteroids to learn about the early solar system.
- The asteroid belt contains thousands of rocky objects.
- Some asteroids have struck Earth in the past, creating large craters.
- NASA tracks potentially dangerous asteroids that come near our planet.
- The largest asteroid, Ceres, is now classified as a dwarf planet.
- Asteroids are made mostly of rock and metal.
- Space missions have visited several asteroids to collect samples.