Mars

the surface is not hospitable to humans or most known life forms due to the radiation, greatly reduced air pressure, and an atmosphere with only 0.16% oxygen. ... Human survival on Mars would require living in artificial Mars habitats with complex life-support systems.So how did Mars die? After repeatedly skimming the upper reaches of the Martian atmosphere with an orbiting probe, researchers have another piece of the puzzle—they discovered that H2O molecdon't Diet planet: Mars's gravity. Climate change: At the equator, Mars is a comfortable 80 degrees Fahrenheit, but the temperature at its poles can get down to 199 degrees below zero.Can we plant trees on Mars? You can; you just have to compress the atmosphere into a greenhouse and plant them in soil that has been filtered of Mars' perchlorate salt that's toxic to higher life. a) The ground isn't suitable for plants. There aren't enough minerals and there is no water. And if there is liquid water, it's extremely salty.Our results indicate that (meta)stable brines on the Martian surface and its shallow subsurface (a few centimeters deep) are not habitable because their water activities and temperatures fall outside the known tolerances for terrestrial life," they wrote in the new study, which was published online Monday (May 11)Mars is sometimes called the Red Planet. ... Like Earth, Mars has seasons, polar ice caps, volcanoes, canyons, and weather. It has a very thin atmosphere made of carbon dioxide, nitrogen, and argon.