What is a moon?
A large cluster of stars and planetary systems
A large ball of matter (normally hydrogen and helium) that is undergoing nuclear fusion
A natural satellite that orbits a planet
What is an exo-planet?
A ball of rock or gas that orbits a star
A central star with planets orbitting it
A planet existing outside of our solar system that orbits around a star other than the Sun
What is the Milky Way?
Everything we can see
Our planetary system
Our galaxy
What is the Universe?
All of the matter in existence
Why don't we use metres to measure distances in astronomy?
They're not SI units
They're not big enough
They're too big
What is a light year?
The time it takes for light to travel for a year
The distance light travels in a year
The speed light travels in a year
What is the speed of light?
\[230\,m\,s^{-1}\]
\[340\,m\,s^{-1}\]
\[300\, 000\, 000\, m\,s^{-1}\]
How long does light take to travel from the Sun to the Earth?
Eight seconds
Eight minutes
Eight years
What are the two basic requirements for life?
Oxygen for respiration and the Sun's energy
Water and food
A stable and moderate range of temperatures and a source of energy
What do we use as our energy source on the surface of the Earth?
The Sun
The Moon
The stars
Which of the following places in the Solar System could life exist other than Earth?
Pluto's satellite, Charon
Mars' satellite, Phobos
Jupiter's satellite, Europa