What is at the centre of our Solar System?

The Sun is at the centre of our Solar System.

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What is a planet?

A planet is an object that orbits a star.

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How many planets are in our Solar System?

There are eight planets in our Solar System.

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What keeps the planets in elliptical orbits around the Sun?

The Sun's strong gravity keeps the planets in elliptical (elongated circle) orbits.

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Do planets like Earth emit light?

No, planets like Earth do not emit light.

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What do stars like the Sun give out?

Stars like the Sun give out huge amounts of energy as light.

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What is a galaxy?

A galaxy is an immense collection of stars.

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How many galaxies make up our universe?

Billions of galaxies make up our universe.

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Where is our Solar System located?

Our Solar System resides within the Milky Way galaxy.

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Why do other galaxies look like tiny faint stars?

Other galaxies look like tiny faint stars due to their vast distances from us.

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What does a light year measure?

A light year measures the distance light travels in one year.

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Why are light years used to measure distances in space?

Light years allow us to measure the enormous distances between objects in space.

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