Planets in our Solar System

Kuiper BeltThe region past

Neptune's orbitit has millions of icy rocks called comets.

Bigger objects in this belt are called Kuiper Belt objects.

The belt is shaped like a plate.

Asteroid rocks or metal that

orbits the sun Most are in the

asteroid belt between the orbits of Mars and Jupiter

Cometa body of ice and

dust that travels in a long narrow orbit around the sun

In the night sky it looks like a star with a tail

The Halley's comet has been spotted every 76 years since 1758.

Crater

A hollow area or pit in the ground

Caused by a meteorite

Meteor Also known as

a shooting star Rust or dust

particles falling to Earth

They heat up and burn due to friction with air on the way down

most never reach the ground

OrbitThe planets, moon, asteroids and comets orbit or move around the sun in a circular motion.

Planet

Planets revolve around a star like our SunEarth is the 3rd planet in our Solar System

PlanetoidSmall, round

bodies orbiting the sun (smaller than the 8 planets)

Dwarf planet Pluto is a Planetoid

The asteroid Ida is an irregularly shaped and heavily cratered planetoid

Rotate

When a planet spins around his axis

It takes 24 hours for Earth to complete one rotation

Neptune completes one rotation in 16 Earth hours.

Neptune Earth

Satellite

An object that orbits celestial bodies is called a satellite

Anything that travels in a circle

Can also be man made

Sputnik I was the first man-made satellite to orbit the Earth.

Space

Vast emptiness that lies beyond Earth’s atmosphere

Where Earth, the Moon, the sun, the planets, and stars are all located

No air in space

Telescope

an instrument used to observe objects in space

The Hubble Space Telescope is a telescope that revolves around Earth.

Meteoroid

small pieces of rock drift away from the asteroid belt and move in different directions.

Meteorite

When a meteoroid moving away from the asteroid belt hits Earth's surface, it is called a meteorite.

This causes a crater