Why Do Mars Exist?

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Mars is a planet that is described as cold and dry. However, approximately 3 billion years ago Mars had liquid water running along its surface, which scientists believe could have helped microbial life flourish (Wall, 2016). Scientists have believed for many years that there are specific elements required for life to exist; hydrogen, oxygen, carbon and nitrogen (Wall, 2016). In some habitats scientists have discovered some species that can survive without some of these elements, leading researches to believe that life could potentially survive with much less on other planets in the universe, like Mars.
A complex organism like a human requires many different elements for survival; the four main elements include carbon, oxygen, nitrogen and hydrogen …show more content…

This field would have protected the atmosphere from most of the suns radiation, as well as potentially been able to hold more oxygen in the atmosphere, allowing life to flourish (NASA, 2016).
Scientists have found evidence of several different elements being found on Mars, that suggest potential life could survive presently, in the future, or perhaps in the past. Mars has an atmosphere that is about 1% of what the atmosphere on Earth is (Sharp, 2012). This meaning that the planet is not protected from the suns radiation, at is about 95% carbon dioxide, lethal to humans, but may have had potential to sustain life in the past (Sharp, 2012).
Mars rovers Opportunity and Spirit were meant to complete their original mission in April 2004, but are still operational and sending back more information about the terrain on Mars (Rayal, 2016). Perhaps one of the most interesting discoveries these rovers have unearthed is a substantial silica deposit, roughly 90% pure silica, found nearly 1,200 days after first touchdown on Mars (Rayal, 2016). What makes this so interesting is that for this much silica to be formed, scientists believe that the presence of liquid water must have been part of the process in creating this concentration of silica (Rayal, 2016). The amount of water needed to create this deposit would have been large enough to potentially …show more content…

The rover landed in Gale Crater, which is believed to have been at one time, a great lake. Mars has signs of several large lakes where water would settle for periods of time, as well as many rivers and streams that ran into another (NASA, 2015). When people think about life in space, they usually think about current or future life forms. However, much like several civilizations on Earth, there may have once been life on Mars in the past, that have now vanished into the dusty atmosphere that now covers most of Mars. These vast water ways are believed to have been able to sustain life, approximately six billion years ago (NASA, 2015). NASA is planning on launching a new mission to Mars in the mid 2030’s, equipped with more advanced technology that would be able to dig deeper into the sediment to retrieve larger, more accurate samples, and hopefully tap into some underground reservoirs (NASA,

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