There is all sorts of things hitting the stratosphere at over mach 1 at any given time, some boom, some don’t.
This started to happen in Space beginning in 2006 with NASA
A mysterious screen of extra-loud radio noise permeates the cosmos, preventing astronomers from observing heat from the first stars. The balloon-borne ARCADE instrument discovered this cosmic static (white band, top) on its July 2006 flight. The noise is six times louder than expected. Astronomers have no idea why.
Scientists hear mystery boom from space
Radio noise from distant cosmos is six times louder than expected
There is “something new and interesting going on in the universe,” said Alan Kogut of NASA’s Goddard Space Flight Center in Greenbelt, Md.
A team led by Kogut detected the signal with a balloon-borne instrument named ARCADE (Absolute Radiometer for Cosmology, Astrophysics and Diffuse Emission).
In July 2006, the instrument was launched from NASA’s Columbia Scientific Balloon Facility in Palestine, Texas, and reached an altitude of about 120,000 feet (36,500 meters),