[higgmeister]

“In a stunning series of images, NASA has revealed the moment an experimental supersonic aircraft broke the sound barrier without producing a sonic boom audible at ground level.”

Who or what was traveling at the speed of sound that was able to take the photograph.

I say again, they cannot micturate down my neck and say it is raining..

[TexasGator]

“Who or what was traveling at the speed of sound that was able to take the photograph.”

OP article. Paragraph eleven.