Will the Sun Shine Forever?
The Sun is a giant nuclear furnace. In its core, at about 15 million °C, it fuses hydrogen into helium. Each helium nucleus weighs a little less than the four hydrogen nuclei that made it, and the missing mass becomes energy, according to Einstein's…
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With its numerous moons and several rings, the Jupiter system is a 'mini-solar system.' Jupiter is the most…
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Radioactive Radon
Radon is a gas produced by the radioactive decay of the element radium. Radioactive decay is a natural,…
Chemistry
Ozone: Good Up High, Bad Nearby
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