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At least two-thirds of Mars' surface is more than 3.5 billion years old, and it could have been habitable 4.48 billion years ago, 500 million years before the earliest known Earth lifeforms; [4] Mars may thus hold the best record of the prebiotic conditions leading to life, even if life does not or has never existed there.
However, a Mars year is almost twice as long as an Earth year. Sols . The average length of a ... (1949), humans living on Mars use a 24-month calendar, alternating ...
While one carbon dioxide scrubber filters the astronaut's air, the other is vented to the Mars atmosphere. [64] Growing food Depiction of plants growing in a Mars base. NASA plans to grow plants for space food. [65] If humans are to live on Mars, growing food on Mars may be necessary – with numerous related challenges. [66]
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William Herschel was the first to deduce the low density of the Martian atmosphere in his 1784 paper entitled On the remarkable appearances at the polar regions on the planet Mars, the inclination of its axis, the position of its poles, and its spheroidal figure; with a few hints relating to its real diameter and atmosphere. When Mars appeared ...
The Clancy Mars year is reckoned from one Martian northward equinox to the next (L s = 0°), and specific dates within a given year are expressed in L s. The Clancy Mars year count is approximately equal to the Darian year count minus 183. The Allison Mars sol date epoch equates to L s = 276.6° in a year that is undefined in the Clancy Mars ...
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A City on Mars is a counterbalance to the growing optimism over space exploration.