Space Quiz Review

All existing matter and space considered as a whole; the cosmos. Estimated to be 13.8 billion years old.

• Cosmos

• Universe

• Galaxy

• Solar System

A theory that the universe began as a small singularity and then inflated and got bigger/expanded.

• Big Bang

• Big Bing

• Hawkings Radiation

• Theory of Relativity

Self-luminous; a mass of gas and dust held together by its own gravity; energy comes from internal nuclear fusion.

• Black hole

• Planets

• Galaxies

• Stars

The massive explosion of dying star

• Nebula

• Planetary Nebula

• Neutron Star

• Supernova

Where stars are born.

• Universe

• Galaxy

• Light Year

• Nebula

A system of millions or billions of stars. Held together by gravity.

• Solar System

• Galaxy

• Milky Way

• Stars

A light year is a distance of ___________ trillion miles.

A central star with its associate planets, moons, asteroids, etc. Everything orbits the central star.

• Galaxy

• Universe

• Supernova

• Solar System

These orbit planets.

• Moons

• Stars

• Supernovas

• Black holes

A place in space where the gravity is so strong that nothing can escape it.

• Nebula

• Moon

• Black Hole

• Stars