It is positioned just next to Earth and thus scientists and astronomers believe that there could be a possibility of life on this planet just as our planet. The first humans on Mars would need to farm and establish a food source. Hints have been found before, but this is the best evidence yet. The difference between Monday and Tuesday could be 170 degrees. There's also a natural beauty on the planet: a grand canyon that measures nearly the entire width of the U.S. and a volcano the size of Arizona. ), The Secret Science of Solving Crossword Puzzles, Racist Phrases to Remove From Your Mental Lexicon. The atmosphere is also nearly 100 times thinner than Earth's, meaning Mars cannot retain the radiant heat of the sun, so while late afternoon at the Martian equator may be a comfortable 70 F, at night the temperature would fall to 100 F below zero. However, given the construction of an artificial environment, life on Mars could be possible. And the first person to go is likely living today, he said. The permafrost layer on Mars is only a couple of centimeters below the surface, and salty brines can be liquid a few centimeters below that but not far down. More: NASA Mars rover discovers ‘building blocks’ for life: 3-billion-year-old organic matter, More: Scientists reflect on past, future mars missions, Follow Ashley May on Twitter: @AshleyMayTweets, Mars discoveries boost case for possible life, Scientists reported Thursday that NASA's Curiosity rover has found potential building blocks of life in an ancient Martian lakebed. The plan is to send someone to the planet by 2040. About every 26 months, it's summer on Mars, meaning prime dust storm season. The Viking program of the 1970's was the first to return data that there is currently no evidence of life on Mars. Elon Musk wants to terraform Mars and establish a colony on the Red Planet. Mars is a completely hostile environment to human life, combining extreme cold with an unbreathable atmosphere and intense radiation. "Sometime in the next decade, we plan to blast off the surface of Mars and return.". This assumes that Earth-like atmosphere and temperatures, as well as food and water, can be provided, but providing such an environment on Mars would be enormously expensive. That vehicle would also need to land with precision — mainly not mountains or hills or rocks. Mars is the fourth planet in the solar system. Even more costly would be the constant trips to Mars to resupply the colony. Humans will "absolutely" be on Mars in the future, NASA chief scientist Jim Green told USA TODAY. There is also no edible food and very little available water. Humans will "absolutely" be on Mars in the future, NASA chief scientist Jim Green told USA TODAY. Weather on Mars is extreme. These storms, made up of fine dust that gets caught in the atmosphere, can darken daylight to a twilight stage and last months. We need to build an entire infrastructure. Is the Coronavirus Crisis Increasing America's Drug Overdoses? The atmosphere of Mars is mostly carbon dioxide, the surface of the planet is too cold to sustain human life, and the planet’s gravity is a mere 38% of Earth’s. https://www.usatoday.com/.../could-humans-live-mars-nasa-expert/690476002 Humans cannot live on Mars because neither the temperature nor the atmosphere is compatible with human survival. There is also no edible food and very little available water. Present-day life on Mars, or its biosignatures, could occur kilometers below the surface, or in subsurface geothermal hot spots, or it could occur a few meters below the surface.