Are there humans on Mars?
>> No. One reason is there is no air. In it's current state, Mars is not inhabitable for humans. Recent research suggests that water is present on Mars, however due to Mars' distance from the Sun, the water is frozen and/or underground and Mars is far too cold for humans to live there now. In addition, there is also a lack of a breathable atmosphere.
There are a few vital things needed on Mars before humans can colonize the planet.Survival in space requires a pressurized environment and must include: oxygen for humans to breathe; a thicker atmosphere for oxygen to be able to form; water for obvious reasons; and warmer temperatures as it is too cold on Mars for humans (the average temperature is -68 degrees Celsius) to survive.
Man-made objects have traveled to Mars, zoomed by Mars and kept going, crashed on Mars, entered orbit around Mars, and landed on Mars. At least three of them are presently creeping around on the surface of Mars under the command and control of their own on-board software and controllers on Earth, performing scientific experiments and observations, and communicating their findings back to Earth. The only astronomical body other than Earth around which humans have entered…