Life on Mars If the surface life has been reanimated as recently as 450,000 years ago, then rovers on Mars could find dormant but still viable life at a depth of one meter below the surface, according to an estimate. In 1965, the Mariner 4 probe discovered that Mars had no global magnetic field that would protect the planet from potentially life-threatening cosmic radiation and solar radiation; observations made in the late 1990s by the Mars Global Surveyor confirmed this discovery. Scientists speculate that the lack of magnetic shielding helped the solar wind blow away much of Mars's atmosphere over the course of
Mars Express at 19:14 UT to put the spacecraft into a Mars transfer orbit. The Fregat and "Mars Express" separated at approximately 19:17 UT. The solar panels were then deployed and a trajectory correction manoeuvre was performed on June 4 to aim "Mars Express" towards Mars and allow the Fregat booster to coast into interplanetary space. The "Mars Express" was the first Russian-launched probe to successfully make it out of low Earth orbit since the Soviet Union fell. The Near Earth commissioning phase extended from the separation of the spacecraft from the launcher upper stage until the completion of the initial check