Astrophysics 1

Choose an item that is not found in a solar system.

• star

• planets

• galaxy

• moons

What is a planetary system?

• A system of planets moving around a star.

• A system of moons moving around a planet.

What is our planetary system called?

• The Earth.

• The Solar system.

What is a galaxy?

• A huge collection of planetary systems.

• A huge collections of satellites.

What is the name of our galaxy?

• The Milky Way

• Andromeda

• Messier

Our galaxy exists in one of the ______ of the Milky Way.

• legs

• arms

What is found at the centre of every galaxy?

• A sun

• A planet

• A black hole

• A white dwarf

What is a black hole.

• An area of intense gravity that nothing can escape from.

• An supersonic explosion

• The death of a star

What is a comet?

• A rocky object that orbits the sun.

• An icy and dusty object that orbits the sun.

What's the difference between an asteroid and a moon?

• An asteroid orbits the moon. A moon orbits a planet.

• An asteroid orbits the sun. A moon orbits a planet.

• An asteroid orbits a planet. A moon orbits the sun.