Definition

An area in space around a planet or star where its magnetic field is strong enough to hold charged particles.

Example

The Earth's magnetosphere protects us from harmful solar radiation.

Conversation

Did you know that Earth has a magnetosphere?

Really? I had no idea what that was until now.

Yeah, it protects us from solar winds and charged particles.

That's pretty cool! I love learning about space.

Synonyms & Antonyms

Root Explanation

Magnetosphere → It is formed from "magnet" (from Greek "magnetis lithos", meaning magnet stone) and "sphere" (from Greek "sphaira", meaning globe or ball). The word describes the region around a planet dominated by its magnetic field, resembling a globe of magnetic influence.

Memory Tip

Think of a 'magnet' that creates a 'globe' of magnetic influence around a planet — that's what a magnetosphere is.

Visually Confused Words