Mars

University of Arkansas researcher Corey Hughes discusses new evidence that Mars’ northern hemisphere may once have held a vast ocean. He explains how Earth’s river deltas help scientists interpret Martian geology and the search for ancient life.

On today's show, we hear how a shift in attitude for some toward DEI comes with challenges for programs placing a priority on women and girls to stay fully funded. We also visit Discover Fort Smith's new Visitor Center on Garrison Ave. Plus, exploring the possibility of an ocean on Mars.

Caitlin Ahrens talks about Elysium Planitia, the second largest volcanic region on Mars. In November 2018, Nasa's InSight mission landed in Elysium…

Caitlin Ahrens talks about the geologic history of Mars on this installment of Scratching the Surface.

On this episode of Scratching the Surface, Caitlin Ahrens talks about the ripples of Mars and how they're similar to ones found on Earth.

On this episode of Scratching the Surface, Caitlin talks about the geysers on Mars, and how they function.

On this episode of Scratching the Surface, Caitlin talks about the terms and composition of the ice pockets on Mars.

What appeared to be large boulders on Mars's rocky surface are actually dust-covered glaciers. While the large bodies of frozen water might not seem…

Take a close look at the surface of Mars and you might mistake the images for the dusting of a crime scene. Alas, these troughs and ridges, known as…

Welcome to Scratching the Surface with Caitlin Ahrens, the Pluto Manager at the Center for Space and Planetary Science. Just below Mars' equator lies the…