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21 April 2014
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Space Day Q&A - Other

What is an asteroid?

Asteroids are rocky, metallic objects in the solar system which orbit the Sun, but do not have the same characteristics as planets.

Is there life on Mars?

Up until now no one has found evidence of life. However, organisations like NASA are looking for evidence, such as bacteria in the soil or evidence of water - an essential ingredient to life as we know it.

What is a meteoroid?

A meteoroid is debris in the solar system. Meteoroids are small, up to boulder size.

What is a meteor?

A meteor is the visible light path of the meteoroid as it enters Earth’s atmosphere.

Isolated Iron Meteorite © Jim Mills -

What is a meteorite?

If the debris survives impact with the Earth’s atmosphere and can be found on Earth as a rock. This rock is called a meteorite.

What is a shooting star?

A shooting star is the common name for a meteor.

What is an astronomer?

An astronomer is a scientist who studies planets, stars and galaxies.

How far is the Moon from Earth?

The Moon does not travel round the Earth as a perfect circle, so the distance will vary. At its shortest it is 225,700 miles away and at its longest it is 252,000 miles away.

What’s in space?

Space is a vacuum, but it is not necessarily completely empty. It is not a perfect vacuum. There are particles and electromagnetic waves travelling through Space, as well as dust and gas particles in some regions.

Can you hear sound in space?

No. Sounds are vibrations that can travel through different materials in a medium like air or water etc. In space there is no medium for the vibrations to travel through.

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