Oceans of liquid water existed on the surface of Mars in ancient times, can occur on the red planet through the greenhouse effect induced by high concentration of hydrogen in the atmosphere, say scientists in a paper published in the journal Nature.
It is considered that on the surface of Mars in ancient times there were oceans and rivers of liquid water. The red planet is too small to hold the dense atmosphere, causing the water slowly evaporate into space along with the air of Mars. Interestingly, the MRO probe discovered in the second half of the 2000’s, many clay deposits, which are hidden inside the water molecules. This discovery found evidence for the existence of water on ancient Mars.
Many opponents of this hypothesis claim that the temperature on Mars in this era were too low for water to be liquid. The Universityof Pennsylvania United Statesand his colleagues have shown that the greenhouse effect on Mars was to provide enough heat for melting ice and their transformation into the oceans.
To do this, scientists have created a climate model, built on the basis of data on climatic conditions on ancient Mars, collected with the help orbital probes NASA. According to calculations, the average temperature on the surface of Mars would be above the freezing point of water due to the high concentration of hydrogen in the atmosphere, which was about 15-20%
According to them, the hydrogen could appear in the atmosphere of the red planet due to volcanic eruptions, which often occurred on early Mars. Along with molten rocks on the surface of Mars and gases, including Co2 and methane.
Under the influence of sunlight Ch4 molecules decompose into carbon dioxide and pure hydrogen. Over time, the Martian atmosphere has amassed enough hydrogen to the oceans of liquid water that evaporated along with the atmosphere into space in the next era.