Throughout the research all these years, humanity has rightly regarded Mars as the extraterrestrial planet, which is most likely to have life. Of the Sun¡¯s nine planets, Earth and Mars are the only two that have been washed by water and possess atmospheres that are supportive to exist life. Mars has a rotation period, which is almost same to Earth¡¯s: the Martian day equals 24.5 hours. And Mars also has variations on seasons and amounts of sunshine that are similar to Earth.
However, Mars has thinner atmosphere than Earth, and also it cannot have liquid water on the surface. The planet¡¯s size and distances from the Sun explain most of the differences between Earth and Mars. Mars only has 54% of Earth¡¯s diameter and just 11% of Earth¡¯s mass. As a result of low mass, Mars has only 40% of Earth¡¯s gravitational force on objects at its surface. Mars is 130-160 million miles from the sun, while the Earth remains between 91-94 miles. The combination of its low mass and......

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Title: Mars
Approximate Word Count: 775
Approximate Pages: 4 (250 words per double-spaced page)

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