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Stars The universe is vast and amazing. There are many millions of trillions of stars in the sky, most of them being bigger than our sun. Stars account for 98% of the matter in a galaxy. The rest of 2% consists of interstellar or galactic gas & dust in a very attenuated form. The normal density of interstellar gas throughout the galaxy is about one tenth

HTML codes are very important for bloggers and are a must for Science bloggers. With the help of it, they can enhance their blog by decorating the articles. Mathematical signs and symbols are extremely important to post a perfect article. Here is a concise list of signs/symbols generally used. Important! Symbols are used by inputting &; . Note that it must start with & and end

The environment is contaminated in numerous ways. Plastic on the land, sewage in the water, carbon in the air. But not every substance is radioactive and not every pollution is radioactive pollution. There is a category of atoms that try to become a stable isotope from its unstable state. This process involves emission of radioactivity. When these atoms are present in the environment, then you can

Karl Scheele Died while testing his discoveries Scheele was a brilliant pharmaceutical chemist who discovered many chemical elements-Oxygen, Molybdenum, Tungsten, Manganese and Chlorine. He also discovered a process very similar to pasteurization. Scheele had the habit of taste testing his discoveries and, fortunately, managed to survive his taste-test of hydrogen cyanide HCN. But alas, his luck was to run out: he died of symptoms strongly resembling