In space, no one can hear you scream — here's why. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Our universe is filled with floating nebulae, ...

CAPE CANAVERAL, Fla — First came the amazing pictures, then the video. Now NASA is sharing sounds of its little helicopter humming through the thin Martian air. NASA’s Jet Propulsion Laboratory in ...