Origin Of The Universe Flashcards
Star
A large celestial body that is composed of gas and that emits light the sun is a typical star.
Light year
The distance that light travels in one year
Red giant
A large reddish star late in its life stage
White dwarf
A small hot dim star that is the leftover center of an old star.
Supernova
A gigantic explosion in which a massive star collapses and throws its outer layer into space.
Black hole
An object so massive and dense that not even light can escape its gravity.
Galaxy
A collection of stars dust and gas bound together by gravity.
Cluster
A group of stars or galaxies bound by gravity.
Interstellar matter
The gas and dust located between the stars in a galaxy.
Quasar
Quasi radio sources very luminous objects that produce energy at the high rate and that are thought to be the most distant objects in the universe.
Universe
The sum of all space matter and energy that exist that have existed in the past and that will exist in the future.
Red shift
An apparent shift toward longer wavelengths of light caused when a luminous objects moves away from the observer.
Blue shift
An apparent shift toward shorter wavelengths of light caused when a luminous object moves toward the observer.
Big Bang Theory
The theory that all matter and energy in the universe was compressed into an extremely small volume that 10 to 20 billion years ago exploded and began expanding in all directions.
