Breaking the sound barrier: Why sonic booms happen – and how new NASA tech could quiet them - BBC Science Focus Magazine
Super Hornet jet pictured close to breaking sound barrier
Bullet planes, fatal crashes – and the top secret British project to break the sound barrier first | National Geographic
Sonic Booms
You think this is a sonic boom – but it's not - BBC Future
Awesome Pictures of Jets Smashing the Sound Barrier
Comeback Kid: The Next Sound-Barrier-Busting Passenger Jet Could Be Quietly Supersonic | GE News
Sound barrier - Wikipedia
Breaking the Sound Barrier - Fast As You Can | NASA
Will We Ever Fly Supersonically Over Land? | The New Yorker
Does a Video Show a Fighter Jet Breaking the Sound Barrier? | Snopes.com
Ed Piotrowski WPDE - Cool photo of an F-18 fighter jet breaking the sound barrier. The speed at which you break the sound barrier is roughly 770 mph but the exact speed