Coast to Coast AM - 
Live Nightly 1am-5am EST / 10pm-2am PST

articles

Martian Mystery: 'Inca City'

Pictured is the Martian anomaly known as "Inca City," the informal name given by Mariner 9 scientists in 1972 to a set of intersecting, rectilinear ridges that are located among the layered materials of the south polar region of Mars. Their origin has never been completely understood. The second image shows the mysterious ridges in close-up. More here.

Click on images to enlarge.

Martian Mystery: 'Inca City' Martian Mystery: 'Inca City'

most popular

calendar

Check out our calendar for George Noory's public appearances in 2014.

e-newsletter

Sign up for our free CoastZone e-newsletter to receive exclusive daily articles.

twitter