All You Need to Know about Galaxies

EarthSky and Space Oddities joined forces to bring you this video about galaxies. A galaxy is a vast island of gas, dust and stars in an ocean of space. Typically, galaxies are millions of light-years apart. Galaxies are the building blocks of our universe. Their distribution isn’t random, as one might suppose. Instead, galaxies are along unimaginably long filaments across the universe, forming a cosmic web of star cities. A galaxy can contain hundreds of billions of stars and be many thousands of light-years across. Learn more about galaxies in this video.

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