River on Mars were much wider and more powerful than on Earth
After studying numerous photos of scientists are convinced that water has played a huge role in the history of Mars. Indeed, the surface of the Red Planet is literally outlined waterways, and researchers from the University of Chicago believe that it was the river is much wider, and the water flowed with much greater power than on Earth. At the same time, scientists are wondering how this could happen - the current understanding of ancient Mars does not involve the conditions for the rapid flow of water over its surface.
Scientists believe that even in ancient times, Mars has a very weak atmosphere, so the planet can not provide proper greenhouse effect for the formation of powerful streams of water. Also in those days the sun shone much weaker - brightness is only 25-30% of this figure. Therefore, the researchers used to pave that Mars has long been a relatively dry place with cold and sometimes icy water. The assumption that the Red Planet ran wide and powerful river, was made after studying the 200 beds of the rivers drained. This is evidenced by numerous factors such as the width of the waterway, the size and steepness of the gully pieces of gravel, once lying under flowing rivers.
Of course, the new discovery opens up another new fact about ancient Mars, but also gives rise to new questions. Chief among them - a climate reigned on the planet billions of years ago, so that the water can flow from such a big power? Scientists there is no answer, because their ideas about the past, Mars does not correspond to the new discovery.
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