Boiling Blood and Radiation: 5 Ways Mars Can Kill
Radiation exposure is among the top health risks for Mars astronauts, but the Red Planet poses many other dangers as well.
The most immediate threat to human health on Mars is the low pressure of the planet’s atmosphere, which is about 100 times thinner than Earth’s. So low atmospheric pressure would kill an unprotected Mars explorer faster than anything else.
The long-term goal of the U.S. space program is a human mission to Mars in the mid-2030s, NASA has said.