National Aeronautics and Space Administration Logo
Follow this link to skip to the main content NASA Banner
Solar System Exploration
Aristarchus and Herodotus
Aristarchus and Herodotus (click to enlarge)

Aristarchus and Herodotus

This oblique photograph looks south across the Aristarchus plateau. There are two prominent impact craters in the photograph. On the left is Aristarchus, 40 kilometers in diameter, and on the right is Herodotus, 35 kilometers in diameter.

In the center of the photograph, between the two craters, is a feature known as Cobra's Head. Beginning at Cobra's Head, the sinuous valley that snakes its way to the right is Vallis Schroter. Vallis Schroter, which is typically 8-10 kilometers wide and more than 150 kilometers long, most likely formed due to faulting when the Aristarchus Plateau was uplifted nearly 4 billion years ago. Within Vallis Schroter is a narrow, sinuous structure called a rille, which formed as a volcanic channel.

This photo was taken by the crew of Apollo 15.

Image Credit: NASA

Credit: Lunar and Planetary Institute

Awards and Recognition   Solar System Exploration Roadmap   Contact Us   Site Map   Print This Page
NASA Official: Kristen Erickson
Advisory: Dr. James Green, Director of Planetary Science
Outreach Manager: Alice Wessen
Curator/Editor: Phil Davis
Science Writers: Courtney O'Connor and Bill Dunford
Producer: Greg Baerg
Webmaster: David Martin
> NASA Science Mission Directorate
> Budgets, Strategic Plans and Accountability Reports
> Equal Employment Opportunity Data
   Posted Pursuant to the No Fear Act
> Information-Dissemination Policies and Inventories
> Freedom of Information Act
> Privacy Policy & Important Notices
> Inspector General Hotline
> Office of the Inspector General
> NASA Communications Policy
> NASA Advisory Council
> Open Government at NASA
Last Updated: 19 Aug 2008