Study - Earth in Space
Our best links about studying Earth and the space around it. Covering why we have seasons, night and day, gravity, weight and mass, weightlessness, orbits, planets and phases of the moon.
Introduction, ideal for 11-14 year olds, to astronomy and space science.
Great animation which shows the different phases of the moon
What's the difference between weight and mass?
NASA answers why we have night and day.
Everything you wanted to know about the sun and seasons.
A scientist from Cornell University tackles the question of how does gravity work
NASA page on microgravity, free fall and weightlessness in space.
In depth site explaining circular motion and how satellites orbit the Earth.
The folowing links are external