Monday, June 21, 2010

Where will you be in 3563?
Okay, now we are using Astronomical Units. An Astronomical Unit is the mean distance between the Earth and the Sun - 149,597,871 km. How useful!
Jupiter moves much more slowly. It's year is 4,334.5 Earth days long - almost 12 Earth years. Let's increase the speed!
That's better. See how the curve forming has small circles. Because Jupiter moves so much more slowly than the earth, the main movement we see in Jupiter's position is from the Earths own movement. We can get a better idea of where we are if we show the other planets.
That's the end of the lesson! Hopefully you learnt something new. Now try something by yourself - what would the Earth's motion look like to a martian?

Try this! :)


Posted via web from xea's posterous