Humans have never been to Mars. Humans have set foot on the moon, orbited the earth and lived aboard space stations for extended periods, but have not yet visited any other planets.
Humans first visited space in the 1960s, with the United States and the former Soviet Union both sending astronauts to orbit the earth. Manned space exploration peaked in 1969 when Americans Neil Armstrong and Buzz Aldrin landed on the moon. Numerous satellites have photographed Mars, and the United States in 1976 landed two probes, Viking 1 and Viking 2, and two rovers, Spirit and Opportunity, on the Martian surface in 2004. This has been the extent of human interaction with the Red Planet. However, the scientific community is diligently working on a mission to send man to Mars.Learn More
Curiosity, a rover that's exploring Mars as of 2014, has a top ground speed of 1.5 inches per second, or about 0.1 mph. Curiosity landed on Mars on Aug. 5, 2012.Full Answer >
Low pressures, a lack of oxygen and cold weather on Mars would force humans to remain confined to spacecrafts and vehicles, according to physics.org. Astronauts could occasionally walk around in the open, but only if they wore spacesuits. Settlers would risk dying if their spacesuits became seriously damage. Underground shelter would be an ideal scenario. As of 2014, no settlement on Mars has been established.Full Answer >
The average temperature on Mars is -80 degrees Fahrenheit. A summer day near Mars' equator gets up to 70 degrees Fahrenheit, but dips to -100 degrees Fahrenheit at night. Winter temperatures at the Martian poles drop to 195 degrees Fahrenheit.Full Answer >
Mars is the second smallest planet in the solar system, with a diameter of just over 4,212 miles and a circumference of 13,256 miles. Its diameter is about 53 percent that of the Earth. Among the major planets, only Mercury is smaller.Full Answer >