science, kids, light travels faster than sound, wtf
published on: 2014-10-16 06:23:13
picklejam.tumblr.com/post/100143449876/
picklejam.tumblr.com/post/100143484261/
picklejam.tumblr.com/post/100495250776/
picklejam.tumblr.com/post/100569345826/
picklejam.tumblr.com/post/100569370141/
picklejam.tumblr.com/post/100569402306/