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looks at research into fundamental questions: Where did everything come from? What is the universe made of, and how does it work? What is our place in the cosmos? Are we alone? Learn about the Big Bang, dark matter, superstrings, and Einstein's general theory of relativity. See images of galaxies, sunspots, and an area near what is thought to be a black hole. (National Science Foundation)
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The earth is a perfectly ordinary planet in most respects, but a most extraordinary planet in one respect: it harbors life. Its ability to do so is largely a matter of happenstance. Unlike Jupiter, Saturn, Uranus and Neptune, the "gas giant" planets of the outer solar system, earth has a solid surface where oceans can accumulate. And unlike Mercury, Venus and Mars, its fellow rocky planets of the inner solar system, earth is at just the right distance from the sun to keep those oceans from freezing or boiling away. |
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View through the telescope |
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