[vg_byrev] [vg_youtube Mr1TMyxArXk#Space Shuttle Challenger Explosion - ABC News##This is news coverage from the day the challenger exploded, plus a little bit about the astronauts. ] [vg_youtube u0V-ZRNzMWc#Crew Cabin Seperates From Challenger Explosion Intact##This is close up NASA footage that shows the ...

[vg_byrev] [vg_youtube -d9A2oq1N38#Sonic Boom##Join us as we look into the fascinating topic of supersonic travel & we examine the amazing phenomenon of sonic booms! ] [vg_youtube uQ2pkmISOLM#Sonic BOOM Plane##Simply amazing Sonic BOOM!] [vg_youtube Gn5odETw3Yc#Space Shuttle Breaks Sound Barrier##STS-115 Space Shuttle Atlantis blasts off ...