Week of 24 April 2017 

Gullies with Color Anomalies
Gullies with Color Anomalies
Trapped sand may help explain the interesting color variations in this image.
A Volcanic Fissure
A Volcanic Fissure
Although Mars is known for having the largest volcano in our Solar System, we also find small-scale volcanic features on its surface.
Windblown Sand in Ganges Chasma
Windblown Sand in Ganges Chasma
Dark, windblown sand covers intricate sedimentary rock layers in this image from Ganges Chasma.
How Old are Martian Gullies?
How Old are Martian Gullies?
Gullies eroded into the steep inner slope of an impact crater at this location appear perfectly pristine.