The solar system

The sun is the largest object in the solar system.

Earth is the largest planet in the solar system.

There is more than one moon in the solar system.

Mars is the hottest planet.

All planets have rocky surfaces.

Planets can be seen from Earth without a telescope.

One planet has 67 known moons.

Saturn and Uranus do not have solid rings.

The moon and the sun are the same size.

The sun is not a star because it does not shine at night.

A spacecraft can land on the surface of all planets.

It takes Earth roughly 365 days to orbit the sun.

All eight planets are equal distances from each other.

All planets orbit the sun in the same direction.

All planets rotate in the same direction as Earth.

All planets orbit the sun at the same speed.

'Gas giants' are large balls of gas, which a spacecraft can travel through.

Uranus and Neptune are known as 'gas giants' but are most composed of ice.

The solar system contains only the sun, the eight planets and Earth's moon.

Pluto is no longer classified as a planet. It is now called a 'dwarf planet'.