Astronomy and Astrophysics – Astronomy
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aas...212.7104h&link_type=abstract
American Astronomical Society, AAS Meeting #212, #71.04; Bulletin of the American Astronomical Society, Vol. 40, p.259
Astronomy and Astrophysics
Astronomy
Scientific paper
Johannes Kepler was one of Galileo's contemporaries, publishing New Astronomy defining his first two laws, nearly 400 years ago, in 1609. It is a fitting tribute that the Kepler Mission launches in 2009. Kepler continued his studies of motion and made observations of satellites of Jupiter, and published his third law. We now recognize Kepler's laws as 1. Planets move in elliptical; 2. The planets move such that the line between the Sun and the Planet sweeps out equal areas in equal time no matter where in the orbit; and 3. The square of the period of the orbit of a planet is proportional to the mean distance from the Sun cubed. Kepler's laws were deduced empirically from the motions of the planet Mars in the early 17th century, before Newton deduced the law of gravity and his laws of motion.
The Kepler Mission, a NASA Discovery mission, is specifically designed to survey our region of the Milky Way galaxy to detect and characterize hundreds of Earth-size and smaller planets in or near the habitable zone. The habitable zone encompasses the distances from a star where liquid water can exist on a planet's surface. Results from this mission will allow us to place our solar system within the continuum of planetary systems in the Galaxy.
The Mission Education and Public Outreach (EPO) Program has developed a Night Sky Network (NSN) outreach kit, Shadows and Silhouettes. This NSN kit is used by amateur astronomers at school and public observing events to illustrate a transit, and explain eclipses.
DeVore Edna
Gould Andrew
Harman Pamela
Koch Daniel
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