Valles (singular
vallis) on
Mars
Mars is the fourth planet from the Sun. It is also known as the "Red Planet", because of its orange-red appearance. Mars is a desert-like rocky planet with a tenuous carbon dioxide () atmosphere. At the average surface level the atmosph ...
are similar to valleys on Earth. Some features that take this title may be better described as
canyon
A canyon (; archaic British English spelling: ''cañon''), gorge or chasm, is a deep cleft between escarpments or cliffs resulting from weathering and the erosive activity of a river over geologic time scales. Rivers have a natural tendency t ...
s or
chasma
In planetary nomenclature, a chasma (''plural'': chasmata ) is a deep, elongated, steep-sided Depression (geology), depression. As of 2020, the International Astronomical Union, IAU has named 122 such features in the Solar System, on Venus (63), ...
ta; see
List of Chasmata on Mars. Coordinates are given as planetocentric latitude with east longitude. Large valles are named for the words for "Mars" or "star" in various languages, while small ones are named for rivers.
References
External links
Planetary Names/usgs
{{Portal bar, Solar System
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Mars
Mars is the fourth planet from the Sun. It is also known as the "Red Planet", because of its orange-red appearance. Mars is a desert-like rocky planet with a tenuous carbon dioxide () atmosphere. At the average surface level the atmosph ...