Is it hard to fly a helicopter in the Antarctic cold? What do penguins sound like? How about the instruments designed to test ...

Helicopters have one of the most recognizable sounds in aviation. The signature "whop whop" or deep thumping sound announces its arrival long before it appears in the sky. It's a sound so iconic, it's ...

The carbon fiber blades’ rotation almost reached Mach 1. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. NASA recently released a video showing a ...