Level 15
Level 16

Universe II - REVERSED


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Development of the Universe
Big Bang Theory
Explosion of a big star
Supernova
The result of a supernova; the gravity is so strong even light can't escape
Black hole
Amount of light a star gives off
Absolute magnitude
An object made of ice, gas and dust that travels through space
Comet
A small chunk of metal or stone that orbits the Sun
Meteoroid
Meteoroid that strikes the Earth's surface
Meteorite
Level 17