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Details of the experiment conducted to determine the speed of light including Ole Römer's observation with an eclipse of Io, Jupiter's moon.
Measuring times of the eclipses of Jupiter's moons when Earth and Jupiter were in various positions gave evidence for light traveling at a finite speed. Includes a list of measurements of c made ...
Java animation showing the motion of the planets of the solar system, moons of Jupiter and two comets.
Explore our solar system with this beautiful 3D interactive which shows the orbits of the planets, distances, etc (requires flash).
It turns out solar panels get slightly more power if they face west rather than south.
Build your own solar system in this flash simulation with stars, planets and moons, and see what weird and wonderful orbits you can create.
A relatively basic animation that allows you to view the entire Solar system, or just the inner planets (through the orbit of Mars).
Animated video explaining our place in the solar system and what will happen to us in the future.
Site giving information about the solar system, including individual planets, comets, asteroids and meteorites.
This NASA site tells you all there is to know about exploring our solar system. With information on all the planets and missions past, present and future.
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