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Asteroid

UK //ˈæstərɔɪd// US //ˈæstərɔɪd// Pronunciation

Definition

A small, rocky body that travels in orbit around the Sun.

Listen to definition

In simple words: A small rock that orbits the Sun, mostly found between Mars and Jupiter.

Examples

• The scientists tracked an asteroid that was approaching Earth.
• Asteroids are primarily found in the asteroid belt between Mars and Jupiter.
• An asteroid passed close to our planet yesterday, but it posed no threat.
• Many asteroids are believed to be remnants from the early solar system.
• The powerful telescope captured images of a massive asteroid in deep space.

Usage notes

Use 'asteroid' in scientific contexts or when discussing space. Avoid in casual conversations unless referring to space topics.

Grammar pattern

standalone noun

Memory hint

Sounds like 'a star id' - imagine identifying a star in the sky.

Collocations

• asteroid belt
• near-Earth asteroid
• main belt asteroid
• asteroid impact
• asteroid mining

Synonyms

• planetoid
• minor planet
• space rock

Common mistakes

• Confused with 'comet' - asteroids are rocky; comets are icy.
• Overgeneralized - not all asteroids are dangerous or visit Earth.