Stellar Energy Sources
In 1938, H. Bethe and F.V. Weizacker independently put forward the first detailed mechanism for...
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Radiation Makes a Manned Trip to Mars Impossible with Current Tech
Though Curiosity the rover can explore and see Mars up close, curious men and women of Earth will...
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The Solar System
The Solar System consists of the Sun and those celestial objects bound to it by gravity. These...
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Stellar Magnitude
In 2nd century BC Hipparchus compiled a catalog of stars. Based on this catalog Ptolemy introduced...
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