Solar System
Closest planet to the sun
Mercury
Name of the Earth's galaxy
Milky Way
As the universe expanded the amount of space __________
increased
Which is closer, the Sun or the Moon
The moon
A interstellar cloud of gas or dust
Nebula
Mars
So much gravity light can't escape
Black hole
The temperature at the start of the universe
Infinite
What is the distance from the Sun to the Earth?
One Astronomical Unit (AU)
Or 150 million kilometres
What is the force which drives star formation?
Gravity
Largest planet in the solar system
Jupiter
Groups of galaxies
Clusters or super clusters
The original structure in the universe
Singularity
What unit would you use to measure the closest star?
Light year
When gravity and fusion forces are balanced
Main sequence star
Name of the path which planets take around the sun
Orbit
Brighest objects in the universe
Supernova (pl: Supernovae)
When a stellar object is moving away from the observer?
Red shift
What is the fastest object in the universe?
Light
Two possible stellar objects after a supernova
Neutron star or black hole
Name one moon of Jupiter
Io, Europa, Ganymede, OR Callisto
Point of no return at a black hole
Event horizon
Order the structures from earliest to latest:
Planets, Light, Atoms, Gravity, Stars
Gravity, Atoms, Light, Stars, Planets
The closest galaxy to the milky way (double points for distance)
Andromeda (2.5 million light years away)
Why does a red giant star expand
H fusion has stopped causing collapse and then He fusion starts causing expansion