Meteoroid vs Meteorite: What’s the Difference?

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Stargazers and students often stop to ask meteoroid vs meteorite because the two words look nearly identical and both describe a space rock. They name the same object at different stages of its journey. This guide explains the difference between a meteoroid and a meteorite, adds the often-forgotten “meteor,” and gives you simple tricks to remember each term and spell it correctly.

What is a meteoroid?

A meteoroid is a small, solid natural object moving through space. By the usual astronomical definition, it is roughly between 30 micrometers and 1 meter across. Smaller specks are interplanetary dust, and larger objects are usually called asteroids.

• A meteoroid can be a tiny grain or a boulder-sized chunk.
• It can come from an asteroid, a comet or other solid debris.
• Until it meets Earth’s atmosphere, it is simply a meteoroid.

The 1-meter and 30-micrometer limits are set by agreement and are not hard physical boundaries, so scientists describe them as rough guides.

What is a meteor?

A meteor is the bright streak of light that appears when a meteoroid enters the atmosphere at high speed and heats up. It is a visible event, not a rock. People often call it a shooting star, though it has nothing to do with real stars.

• Most meteors come from small meteoroids that burn up completely.
• A very bright meteor is called a fireball or bolide.
• A meteor shower is a group of meteors from the same stream of meteoroids.

The key point is that the meteor is the light, and the rock is the meteoroid.

What is a meteorite?

A meteorite is a natural solid object that survives its passage through the atmosphere and reaches the ground. In other words, it is what is left of a meteoroid after the meteor phase.

• Meteorites can range from tiny fragments to very large masses.
• A meteorite smaller than about 1 millimeter can be called a micrometeorite.
• Meteorites seen falling and then recovered are called falls, while others are called finds.

If you think you have found a meteorite, a museum, university geology department or local astronomy club can help you examine it.

Meteoroid vs meteorite: what is the key difference?

The difference is where the object is on its journey. A meteoroid is still in space. A meteorite has already landed. In between, the glowing trail it makes in the sky is the meteor.

Think of it as one object with three names for three stages: meteoroid (before), meteor (during), meteorite (after). Many meteoroids never become meteorites, because they burn up entirely as meteors.

What is the difference between a meteoroid and an asteroid?

Size is the main difference. Asteroids are generally larger than about 1 meter, while meteoroids are smaller. The dividing line is set by agreement, so the distinction is a little fuzzy, and a small asteroid can behave like a large meteoroid.

How do you spell meteoroid and meteorite?

Both words contain “meteor,” followed by an ending. “Meteoroid” ends in -oid, and “meteorite” ends in -ite. The common misspellings “meteroid” and “meteroite” drop the “o” in “meteo-,” so they come out as “meter-” instead of “meteor-.”

A quick check is to spell the word “meteor” first and then add the ending: meteor + oid, meteor + ite.

Meteoroid vs meteorite: which word should you use?

Ask where the object is. Use meteoroid for a rock in space. Use meteor for the streak of light. Use meteorite for a rock on the ground.

Compare these pairs:

• The meteoroid was tracked as it approached Earth. (In space.)
• A bright meteor crossed the sky. (The light.)
• A farmer found a meteorite in his field. (On the ground.)

Common mix-ups about meteoroids, meteors and meteorites

• ✗ We found a meteoroid in the garden.
  ✓ We found a meteorite in the garden.
• ✗ A meteor is a rock on the ground.
  ✓ A meteor is the streak of light in the sky.
• ✗ Shooting stars are real stars falling.
  ✓ Shooting stars are meteors, caused by small meteoroids.
• ✗ A meteor shower means rocks are hitting the ground.
  ✓ A meteor shower is a group of meteors, and most burn up high above.
• ✗ The museum has a meteroite from Mars.
  ✓ The museum has a meteorite.

How can you remember the difference?

Think of the journey from space to the ground. Here are three memory tricks:

1. Space, sky, ground: Meteoroid is in space, meteor is in the sky, and meteorite is on the ground.
2. The “-ite” clue: Many rock and mineral names end in “-ite,” like granite, so a meteorite is the rock you can hold.
3. The spelling check: Both words start with “meteor,” so spell that first, then add -oid or -ite.

FAQ: Meteoroid vs Meteorite

What is the difference between a meteoroid and a meteorite?

A meteoroid is a small rocky or metallic object moving through space, while a meteorite is a piece of one that has survived the trip through the atmosphere and reached the ground.

What is a meteor?

It is the streak of light you see when a meteoroid burns up in the atmosphere. It is often called a shooting star.

How big is a meteoroid?

By agreement, roughly between 30 micrometers and 1 meter across. Larger objects are usually called asteroids, and the limits are set by agreement, not by a physical boundary.

What is a fireball or bolide?

It is a very bright meteor, often described as brighter than the planet Venus appears in the sky.

How do you spell meteoroid and meteorite?

Meteoroid ends in -oid and meteorite ends in -ite, and both contain the word meteor. Meteroid and meteroite are common misspellings.

Conclusion

When you’re stuck on meteoroid vs meteorite, remember the journey: meteoroid in space, meteor in the sky, meteorite on the ground. Spell “meteor” first, then add -oid or -ite. Share this with someone who loves stargazing!