essay on journey to mars
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Mars is one of the eight major planets that form the solar system together with the sun. Mars is the fourth planet from the sun, and it takes about 686.93 days to completely revolve around it. The atmosphere of Mars is estimated to be less than 1% of that of the earth.
Its atmosphere is so thin that it can neither retain heat within the surface, nor prevent the planet from receiving strong radiations from the sun. The atmosphere comprises about 95% carbon dioxide, 1.6% argon, 2.7% nitrogen, 0.13% oxygen, and 0.03% water.
Apart from its unique atmosphere, Mars has other interesting features that other planets do not have. Firstly, the planet has the tallest volcano in the entire solar system. The volcanic mountain is called Olympus Mons and it is approximately 27 kilometers in height above the plains surrounding it.
The volcano is still active as evident by the lava that flows from it. Additionally, Mars has the most extensive and deepest gorge in the entire solar system, which is called the Marineris Valley. The canyon covers a distance of approximately 4,000 kilometers along the planet’s equator and stretches for a depth of about 7 kilometers into the ground.
In addition, Mars is regarded as the only other planet apart from the earth that can support life. Mars has an atmosphere that is composed of gasses such as carbon dioxide, argon, nitrogen and oxygen. Mars also has water, which is also one of the essential elements that support life. The planet’s water exists in liquid form just like it does on earth, which has numerous living things.
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Answer:
Mars is the fourth planet from the sun in our solar system. Also, it is the second smallest planet in our solar system. The possibility of life on mars has aroused the interest of scientists for many years. A major reason for this interest is due to the similarity and proximity of the planet to Earth. Mars certainly gives some indications of the possibility of life.Possibilities of Life on Mars
In the past, Mars used to look quite similar to Earth. Billions of years ago, there were certainly similarities between Mars and Earth. Furthermore, scientists believe that Mars once had a huge ocean. This ocean, experts believe, covered more of the planet’s surface than Earth’s own oceans do so currently.
Moreover, Mars was much warmer in the past that it is currently. Most noteworthy, warm temperature and water are two major requirements for life to exist. So, there is a high probability that previously there was life on Mars.
Life on Earth can exist in the harshest of circumstances. Furthermore, life exists in the most extreme places on Earth. Moreover, life on Earth is available in the extremely hot and dry deserts. Also, life exists in the extremely cold Antarctica continent. Most noteworthy, this resilience of life gives plenty of hope about life on Mars.
There are some ingredients for life that already exist on Mars. Bio signatures refer to current and past life markers. Furthermore, scientists are scouring the surface for them. Moreover, there has been an emergence of a few promising leads. One notable example is the presence of methane in Mars’s atmosphere. Most noteworthy, scientists have no idea where the methane is coming from. Therefore, a possibility arises that methane presence is due to microbes existing deep below the planet’s surface.
One important point to note is that no scratching of Mars’s surface has taken place. Furthermore, a couple of inches of scratching has taken place until now. Scientists have undertaken analysis of small pinches of soil. There may also have been a failure to detect signs of life due to the use of faulty techniques. Most noteworthy, there may be “refugee life” deep below the planet’s surface.Challenges to Life on Mars
First of all, almost all plants and animals cannot survive the conditions on the surface of Mars. This is due to the extremely harsh conditions on the surface of Mars.
Another major problem is the gravity of Mars. Most noteworthy, the gravity on Mars is 38% to that of Earth. Furthermore, low gravity can cause health problems like muscle loss and bone demineralization.
The climate of Mars poses another significant problem. The temperature at Mars is much colder than Earth. Most noteworthy, the mean surface temperatures of Mars range between −87 and −5 °C. Also, the coldest temperature on Earth has been −89.2 °C in Antarctica.
Mars suffers from a great scarcity of water. Most noteworthy, water discovered on Mars is less than that on Earth’s driest desert.
Other problems include the high penetration of harmful solar radiation due to the lack of ozone layer. Furthermore, global dust storms are common throughout Mars. Also, the soil of Mars is toxic due to the high concentration of chlorine.
To sum it up, life on Mars is a topic that has generated a lot of curiosity among scientists and experts. Furthermore, establishing life on Mars involves a lot of challenges. However, the hope and ambition for this purpose are well alive and present. Most noteworthy, humanity must make serious efforts for establishing life on Mars.
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