Weight versus Mass – a 4m 47s video (Eureka 7):
A revision video on Gravity, Mass and Weight (13m 9s).
KS3 Bitesize foundation level – Earth & Beyond – a video covering the Movement of Earth, the apparent movement of the Sun & Stars, the Planets & Satellites.
Space junk yard – The Satellite Story – BBC science (a 2m 57s video).
Science in Action – Forces (Gravity) – a 19m 15s video; Scientific Eye: Gravity (19m 48s).
Where does the Solar System End? a 3 minute podcast from Naked Science Scrapbook.
Moons of the solar system: the Moon – Open University (7m 52s).