Record Breaking Skydive links
Read about all the science behind Felix Baumgartner record breaking jump
A great explainer site about how the speed of sound is calculated and how it changes with temperature and altitude.
NASA explains some facts around sonic booms
A brief explanation of why we use 100km as the border of space
A website from the record breaking skydive about the speed of sound
A good introduction to what is the atmosphere, what goes on in the atmosphere and ideas for activities.
The folowing links are external