A large celestial body that is composed of gas and emits light.
What is the universe?
The collection of dust that is held together by planets.
Space and light years
Space and all the matter and energy in it.
A planet that orbits the suns, and gravity.
What is a galaxy?
Planets that orbit all stars
A big collection of stars, gas, and dust that is held together by gravity.
A big collection of suns
A large collection of moons
Whats a light-year?
The distance that light travels through space in 1 year.
The distance it takes for light to travel in a decade.
The distance a flashlight can travel.
The amount of light in space.
Whats a solar system?
A planet
A star
Collections of large and small bodies that orbit our central star, the sun.
Collections of moons that orbit stars.
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