NASA scientists have discovered evidence that could help answer questions surrounding the history of water loss on Mars.

The team studying these sounds found that Mars' thin air, composed mostly of carbon dioxide, makes sound waves behave differently. On Earth, sound travels at roughly 767 mph. On Mars, deeper pitches move at about 537 mph, with higher ones traveling a bit faster, at 559 mph.

I'm incredibly excited, as part of the Ars Live series, to host a conversation with some of the very best space reporters in the business this afternoon, May 29, at 3 pm EDT about the future of NASA and its deep space exploration ambitions. You can watch Ars Live here.

A number of high-profile missions would get the axe, including the New Horizons Pluto probe and Juno Jupiter orbiter.

The latest selfie by NASA's Perseverance rover at Mars has captured an unexpected guest: a Martian dust devil.

Though little is known about Deimos, another European spacecraft recently captured unprecedented views of the moon's far side. The Hera mission, which will study the asteroid NASA intentionally crashed into three years ago, flew by the Red Planet on March 12, just 11 days after the rover looked up.

NASA has revealed a concept for the next generation of flight on the Red Planet, the "Mars Chopper." Credit: Space.com | animation courtesy: NASA/JPL-Caltech | edited by Steve Spaleta Music: Last Odys

Embry-Riddle Aeronautical University in Daytona Beach hosted Worldwide Campus graduates on Saturday, including an Etihad Airways captain.