Spider on Ejecta Blanket
HiRISE PICTURE OF THE DAY: 19 JANUARY 2020

A Blanket of Spiders

No, not actual spiders, but formations created by the process of sublimation, when a solid state transforms directly into a gaseous one, often creating furrows and exposing darker subsurface material. These spiders are on the ejecta blanket of an impact crater.



Enigmatic Canyon Dunes
This image shows a cross-section of ancient canyon systems in east Coprates Chasma, and shows several generations of wind-driven dunes and ripples.

Boundary Condition Controls on the High-Sand-Flux Regions of Mars
It is often unclear where and why sediment is mobile on today’s Mars. A new paper takes a deeper look.

Beautiful Mars, Beautiful Book
It’s the most beautiful book of Mars ever: “Mars: The Pristine Beauty of the Red Planet” is a unique look at the Red Planet by the most powerful camera sent to another world. Order your copy today!