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|Outer space and everything in it.
|An object made of gas that gives off it’s own light due to nuclear reactions.
|A large cloud of gas and dust in space where stars form.
|A a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
|A galaxy with a bulge in the center and distinctive spiral arms.
|A galaxy with an irregular shape.
|A spherical or elongated-shaped galaxy.
|Milky Way Galaxy
|The name of the galaxy where we live.
|A natural satellite of a planet.
|A body of ice, rock, and dust that orbits the sun.
|A measure of the DISTANCE light travels through space in one year.
|A measure of how bright a star is.
|H – R Diagram
|Shows the relationship between luminosity, classification, and temperature of stars.
|A small, rocky body that revolves around the Sun.
|A bright streak of light caused by the burning of a piece of rock from space as it enters the Earth's atmosphere.
|The range of all the waves that can travel through matter as well as empty space.
|the branch of science which deals with celestial objects, space, and the physical universe as a whole.
|The star around which the planets and other objects in our solar system revolve.
|A recognizable star pattern.
|The remains from the death of a star. It is so massive that not even light can escape its gravitational pull.
|Big Bang Theory
|A theory that states that all matter in the universe began with one tremendous explosion