'In 70-degree air, a plane traveling at about 1,130 feet per second breaks it'
Sound barrier
SCIENCE: In 70-degree air, a plane traveling at about 1,130 feet per second breaks it
In 70-degree air, a plane traveling at about 1,130 feet per second breaks it
In 70-degree air, a plane traveling at about 1,130 feet per second breaks it
SCIENCE
Sound barrier
SCIENCE