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Dao Vallis is a valley on Mars that appears to have been carved by water. It runs southwestward into Hellas Planitia from the southern slopes of the volcano Hadriacus Mons, and has been identified as an outflow channel. [1] It and its tributary, Niger Vallis, extend for about 1,200 km (750 mi). [2]
Evidence for such clouds was observed during the oppositions of 1892 and 1907. In 1909, Antoniadi noted that the presence of yellow clouds was associated with the obscuration of albedo features. He discovered that Mars appeared more yellow during oppositions when the planet was closest to the Sun and was receiving more energy.
Marte Vallis is a valley in the Amazonis quadrangle of Mars, located at 15 North and 176.5 West. It is 185 km long and was named for the Spanish word for "Mars". [ 2 ] It has been identified as an outflow channel , carved in the geological past by catastrophic release of water from aquifers beneath the Martian surface. [ 3 ]
The Jackson Purchase, also known as the Purchase Region or simply the Purchase, is a region in the U.S. state of Kentucky bounded by the Mississippi River to the west, the Ohio River to the north, and the Tennessee River to the east. [1] Jackson's Purchase also included all of Tennessee west of the Tennessee River. In modern usage, however, the ...
The History of Mars may be History of Mars observation; Geological history of Mars This page was last edited on 28 ...
Noachian Period (named after Noachis Terra): Formation of the oldest extant surfaces of Mars between 4.1 and about 3.7 Gya. Noachian-aged surfaces are scarred by many large impact craters. The Tharsis bulge is thought to have formed during the Noachian, along with extensive erosion by liquid water producing river valley networks. Large lakes or ...
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Mars is the fourth planet from the Sun.The surface of Mars is orange-red because it is covered in iron(III) oxide dust, giving it the nickname "the Red Planet". [22] [23] Mars is among the brightest objects in Earth's sky, and its high-contrast albedo features have made it a common subject for telescope viewing.