These discoveries have been made recently.
Scientists for decades tried to prove the existence of water on Mars, but only recently they found several arguments in favor of that water on the red planet has. The discovery of polar ice became one of the first confirmations of the presence of water on the planet, albeit in a frozen form. A few years later was found evidence of greater quantities of frozen water below the surface (closer to the equator), and even liquid salt water on the planet’s surface. In this review interesting facts on the subject.
1. The first assumptions about water on Mars
The first assumption of the presence of water on Mars was made after 1971, there were photos taken by Mariner 9 is the first spacecraft sent to orbit another planet. In the pictures you can clearly see the dry riverbeds and canyons, so the leading scientists of the time wondered about whether there is water on the planet.
2. The Gullies Of Mars
For many decades scientists have tried to confirm the existence of liquid water on Mars. The breakthrough came in 2000, when all of a sudden the pictures of Mars new gullies that were probably made of liquid water flowing on the planet’s surface.
3. On Mars there was life
Scientists studying Mars have discovered that billions of years ago the climate was quite warm and humid. As well as the surface of Mars was partially covered with rivers and oceans.
4. Lost water
Due to the thin Mars atmosphere, weak gravity of this planet could not hold all the water on the surface. As the planet heats liquid water evaporates, an increasing amount of it irretrievably lost in space.
5. The largest flood in the Solar system
Despite the lack of running water on Mars at present, scientists postulate that about 3.5 billion years ago on this planet happened the biggest flood known in the Solar system.
6. The water in the trap from the ice
A huge amount of Martian water, as suggested, locked in the polar ice caps of this planet. Summer hats reduced because the frozen water turns from a solid to a gaseous form, and in winter, the caps increase to half of the distance from the poles to the equator.
7. Mars flood
Extended global warming could turn Mars into a giant pool.
If the Martian ice caps with a thickness of approximately 3 km will melt, the entire planet will be covered with a 5,6-metre layer of water.
8. Water ice, dust, carbon dioxide solid
The Martian ice caps have a rather complex structure. Closer to the “bottom” they consist of layers of water ice and dust, and on top of solid carbon dioxide (dry ice), which resembles freshly fallen snow.
9. The height of the ice age
In the past Mars has experienced many glacial periods that have actually changed the amount of water available for life. Currently, Mars reigns in the midst of one of these glacial periods, which makes impossible the existence of liquid water as long as the planet warms up.
10. Frozen lake
The Curiosity Rover found evidence of a shallow ancient lake on Mars. This lake is of size 50 x 5 km estimated to exist on the planet’s surface for tens of thousands of years, and then maybe frozen.
11. Ice on the equator
Scientists now believe that water on Mars may be trapped in the ice not only in the polar caps, but also in other areas under the planet’s surface. For example, to the North of the equator has been found a huge ice sheet the size of Germany, Sweden and Japan combined. Ice cover extends to a depth of 40 m.
12. The dirt on the wheel
After one of the wheels of the Rover Spirit ceased to function, it when moving the machine dug the whole rut in the ground. This failure inadvertently led to the discovery of compelling evidence for the existence of water on Mars. The dirt stuck to the wheel, was rich in silica, for the formation of which requires water.
13. The Rover found liquid globules of water
In 2008, the Phoenix stationary Mars Rover, studying the Martian surface, dug out of a bright substance, which disappeared within four days. Scientists came to the conclusion that this substance was liquid water, which eventually evaporate.
14. Snow of carbon dioxide
During the Martian winter of 2006-2007 on Mars, the snow was falling, but it’s not quite what you are accustomed to seeing people on the Earth. you might be thinking. It was snowing dioxide (dioxide) carbon. A similar event was recorded for the first time in the Solar system. And in 2008 the Phoenix Mars Rover was first detected near the Martian North pole water ice snow (similar to the one that goes on the Ground).
15. Cold Red planet
Despite all the water in its many forms, which was discovered in recent decades on Mars, the temperature on the red planet is still too low, and its atmosphere is too thin for the possibility of the existence on the surface of liquid water.
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