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barred spiral galaxy
a galaxy that is similar to a spiral galaxy, except that the spiral arm pattern originates from a bar of material that passes through the nucleus of the galaxy.
final stage in the evolution of a very massive star, where the core's mass collapses to a point that its gravity is so strong that not even light can escape
a galaxy shaped like a round or flattened ball, generally containing only old stars
spherically shaped group of hundreds of stars located around the core of the Milky Way Galaxy
Hertzsprung-Russell diagram, a graph that shows the relationship between a star's surface temperature and absolute magnitude
a normal star that is undergoing nuclear fusion of hydrogen into helium. Our sun is a typical main sequence star.
a large cloud of dust and gas that can break apart into smaller pieces and form stars, large cloud of gas and dust that contracts under gravitational force and breaks apart into smaller pieces, each of which might collapse to form a star
a star cluster that has a loose, disorganized appearance and contains no more than a few thousand stars
method of determining the distance from the earth to a star based on the shift in the apparent position of the star when viewed from different angles
Early form of a star; This stage lies between the collapsing of dust and gas and the beginning of nuclear fusion
a galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
a body of gases that gives off a tremendous amount of radiant energy in the form of light and heat
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