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Image 1 - Kepler Finds Unusual Multi-planet Solar System
2011-10-05 03:33:37

A team of researchers led by Bill Cochran of The University of Texas at Austin has used NASA´s Kepler spacecraft to discover an unusual multiple-planet system containing a super-Earth and two Neptune-sized planets orbiting in resonance with each other. They announced the find on Oct. 4 in Nantes, France at a joint meeting of the American Astronomical Society´s Division of Planetary Science and the European Planetary Science Conference. The research will be published in a special...


Latest Astronomia nova Reference Libraries

8_d7f84ec36dbfda23aff1a01e00a4b5e62
2004-10-19 04:45:44

Kepler's Laws of Planetary Motion -- The astronomer Johannes Kepler's main contribution to astronomy was his three laws of planetary motion. Kepler found these laws empirically by studying extensive observations recorded by Tycho Brahe. He found the first two laws in 1609 and the third one in 1618. Isaac Newton was later able to derive the laws from his laws of motion and gravity, thereby producing strong evidence in favor of Newton's inverse-square gravitational law. Kepler's First...

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Word of the Day
omadhaun
  • A fool; a simpleton: a term of abuse common in Ireland and to a less extent in the Gaelic-speaking parts of Scotland.
This word is partly Irish in origin.