Here is a video about the astronauts sending their greeting from the outer space [Link]
A good video to start the students thinking about “zero gravity”.
(1) What do you observe the the video?
(2) What do you think it is the reason for this?
Free Fall
Awesome video by BBC. Some questions to ask:
(1) Why do you think the ball will hit the ground first?
(2) What are the differences that you observe between the ball and the feather?