Galaxies
Galaxies are collections of stars, gas, and dust, combined with some unknown form of dark matter, all bound together by gravity. The visible parts come in a variety of sizes, ranging from a f...
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Galaxy
Galaxies are composed of stars in various stages of evolution, planets, glowing nebulae, dust, gas, and empty space. The galaxy with which we are most familiar is our own Milky Way. Early Greek...
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GALAXIES
Nearly all the matter in the universe is concentrated in galaxies. A galaxy is a gigantic mass of stars held together by gravity. The largest contain millions of stars. The smallest have jus...
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Galaxies
Galaxy
