Ross (Martian crater)
# Ross (Martian crater)

Ross is an impact crater in the Thaumasia quadrangle of Mars located at 57.7 S and 107.84 W. It is 82.51 km in diameter. It was named after Frank E. Ross, an American astronomer (1874-1960). The crater's name was approved in 1973.

Gullies and polygonal patterned ground have been observed in and around Ross crater.

## Images

* Ross Crater, as seen by CTX camera (on Mars Reconnaissance Orbiter).
* Gullies on southern wall of Ross Crater, as seen by CTX camera (on Mars Reconnaissance Orbiter). Note: this is an enlargement from the previous photo.
* CTX image of part of Ross Crater showing context for next image from HiRISE.
* Gullies in Ross Crater, as seen by HiRISE under the HiWish program. Because the gullies are on the narrow rim of a crater and they start at different heights, this example is not consistent with the model of gullies being caused by aquifers.
* Gullies in Ross Crater, as seen by HiRISE under HiWish program
* Group of gullies in Ross Crater, as seen by HiRISE under HiWish program
* Close-up of gullies showing multiple channels, as seen by HiRISE under HiWish program Note: this is an enlargement of a previous image.
* Close-up of gullies showing polygons, as seen by HiRISE under HiWish program Polygons usually form in frozen ice-rich ground. Note: this is an enlargement of a previous image.
* Close-up of gullies showing streamlined forms in channels, as seen by HiRISE under HiWish program Note: this is an enlargement of a previous image.
* Wide view of gullies in Ross Crater, as seen by HiRISE under HiWish program
* Close view of many small gullies in Ross Crater, as seen by HiRISE under HiWish program Note: this is an enlargement of a previous image.
* Close view of polygons near gullies in Ross Crater, as seen by HiRISE under HiWish program Note: this is an enlargement of a previous image.
* Close view of polygons near gullies in Ross Crater, as seen by HiRISE under HiWish program Note: this is an enlargement of a previous image.
