New research shows that the speed of sound on Mars varies considerably by location and temperature. The findings could help scientists understand sounds picked up by Martian rovers, as well as make ...

Can't-Miss Play: Turnover at 1-yard line! Alfred Collins forces pivotal fumble vs. Kyren Williams ...

When legendary pilot Chuck Yeager broke the sound barrier and flew the Bell X-1 past Mach 1 in 1947, it was the greatest aviation milestone ever achieved at that time. These days, however, reaching ...

American company Boom Supersonic just broke the sound barrier with a civilian plane. What exactly is supersonic travel, and when can we expect it?

MILAN — Extreme athlete Felix Baumgartner, the first skydiver to fall faster than the speed of sound during a 24-mile leap through the stratosphere more than a decade ago, was killed in a crash ...