|Diameter||203.0 kilometers (127 miles)|
The Lowell crater is a large impact crater on Aonia Terra in the Thaumasia quadrangle of Mars. The crater is about 203 kilometers (127 miles) in diameter. Lowell is an example of a well-preserved peak ring crater on Mars.
Lowell crater is named for Percival Lowell who built the Lowell Observatory in Flagstaff, Arizona, in 1894, and then started observing Mars intensively for years. He used the observatory and his large refractor telescope to discover what he believed were over 500 canals on Mars. Lowell promoted the idea that they were constructed by an intelligent race of Martians. However, when pictures were received from spacecraft, the canals were found to be optical illusions. Nevertheless, much of the later interest in Mars exploration resulted from the efforts of Lowell.
Viking Orbiter 1 image from 1976
High resolution image from ESA's Mars Express
Lowell crater northeast rim, as seen by HiRISE. Crater floor is toward the bottom of picture.
Shaded relief map
Sand dunes in Lowell Crater, as seen by CTX camera (on Mars Reconnaissance Orbiter).