A galaxy is a mass of stars, interstellar medium, interstellar medium, gases, dust particles, and black matter that have become extremely massive and gravitational.There are dwarf galaxies in the universe ranging from a trillion stars to gigantic galaxies with a...
On the left, an optical image from the Digitized Sky Survey shows Cygnus X-1, outlined in a red box. Cygnus X-1 is located near large active regions of star formation in the Milky Way, as seen in this image that...
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