asteroid

word

Definition

A small rocky object that orbits the Sun, usually found between Mars and Jupiter. Asteroids are much smaller than planets.

Usage & Nuances

'Asteroid' is used mainly in scientific or educational contexts. Common collocations: 'asteroid belt', 'asteroid impact'. Do not confuse with 'meteor' (which burns up in Earth's atmosphere) or 'comet' (which has a tail made of gas and dust).

Example Sentences

An asteroid orbits the Sun.

basic

The asteroid belt is between Mars and Jupiter.

basic

Scientists study asteroids to learn about space.

basic

Did you hear about that huge asteroid that passed by Earth last night?

natural

If an asteroid ever hit Earth, it could cause serious damage.

natural

Some missions send spacecrafts to collect samples from an asteroid.

natural