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Many Moons random
collection of moons
collide, conservation of
momentum. by
Jeffrey S. Rosenthal,
University of Toronto.
Visible Sky Applet
visible sky polar
chart, with the sun,
moon, 4 planets and 56
stars by Omar
Reis, Orion Astronomia e
Navegação, Brasil.
J-Trak: Satellite
Tracking position of
actual satellites
relative to the earth.
choose from
spacecraft,weather,
search and rescue, and
amateur radio
satellites.
Landsat Map Click on
any part of the U.S. and
display an image of that
region taken by the
Landsat satellite
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