Mars loses water faster when it is closest to the Sun, according to new data from the Hubble Space Telescope and NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) mission. The rate of hydrogen loss in Mars’ atmosphere increases significantly during perihelion, the point in its orbit closest to the Sun. This seasonal change has major implications for understandin… science Mars loses water faster when it is closest to the Sun, according to new data from the Hubble Space Telescope and NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) mission. The rate of hydrogen loss in Mars’ atmosphere increases significantly during perihelion, the point in its orbit closest to the Sun. This seasonal change has major implications for understandin…