Mars River Proves Once Existed Water On Red Planet

Spectacular images show that Mars once had abundant water!!!

European Space Agency (ESA) has released a series of stunning photographs depicting the dry print of a huge stream that once meandered on Mars.

The images, taken by ESA’s Mars Express spacecraft, show Reull Vallis, a structure that resembles a dried up bed of a large river. Scientists believe that would have formed due to the existence of flowing water on Mars.

Waters had carved a channel with steep banks in the area called Promethei Terra. The canal then heads to Hellas Basin.

The formation extends over a length of 1,500 km and along it there can be seen vestiges of tributaries of the former river. In some ways, the channel is 7 kilometer wide and 300 meter deep.
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Researchers say that Mars landscape’s details are reminiscent of morphology of formations found on Earth in areas affected by glaciation. For example, one could observe craters filled with sediment, and featuring circular shape and stepped walls.

Experts believe that such formations would have formed long time ago when water or ice had higher levels, before evaporating or subliming (sublimation = transformation of a solid, such as ice, directly into vapor/steam without first melting), gradually, in different periods of the history of the planet.

It is considered that the structures would have taken shape, on the one hand, because of the digging process of the substrate carried out by the flowing water during a period called hesperiene (which ended 3.5 to 1.8 billion years ago) and subsequent erosion caused by rocks debris and ice during a period called the Amazon – which continues today – because of the glaciers flow.

The images suggest that the region had a long and troubled geological history, indicating the existence of some interesting features similar to regions and geological phenomena on Earth.