The center of our galaxy is about 26,000 light-years from Earth. Now if you look at the constellation Sagittarius you are looking at the center of our galaxy. If you look at the picture of our galaxy with tens of...
Why the night looks black. Have you thought of anyone? For dark skies, space has a reason. Although many have asked about it, in 1823 a scientist named heinrich olbers also thought more about. There were two types of cosmology...
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