Mars, atmosphere

This website has multiple sections talking about Mars. It talks about Mar's atmosphere first. Mars has a very thin atmosphere comprised mostly of CO2 with a lot of dust in the atmosphere as well that, combined with wind, causes dust storms on the surface of the planet. The viking explorer found that the percentage of CO2 in the atmosphere of Mars is 95.32%. Because of the presence of even a minute amount of atmosphere on Mars, there is some amount of warming of the planet as a result, not much, but some. In 2004, small amounts of methane were detected in the atmosphere which could be an indication of life. Even smaller amounts of ammonia were also detected, which apparently is even more interesting as ammonia does not last in the atmosphere long and is another byproduct of living or recently living material, at least as we know it. Apparently water vapor was detected on the surface of Mars as early as 1970, but molecular hydrogen, or hydrogen in its gaseous form, H2, was only recently detected using spectrophotometry in 2001. Overall, it was a very interesting and informitive website/article.