Pluto was discovered by Clyde Tombaugh on February 18, 1930. Until 2006, Pluto was in planetary status… The name Pluto was suggested by 12-year-old Venetia Burney from Oxford, England.
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...
You put some zinc into the hydrochloric acid in a test tube. The formation of hydrogen gas can be seen. That's the chemistry you know. Zn + HCl → ZnCl2 + H2 In 1766, Henry Cavendish identified this element and...
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