Water on Mars of these salts". NASA also reported that Jake M rock, a rock encountered by "Curiosity" on the way to Glenelg, was a mugearite and very similar to terrestrial mugearite rocks. On December 9, 2013, NASA reported that Mars once had a large freshwater lake inside Gale Crater, that could have been a hospitable environment for microbial life. On December 16, 2014, NASA reported detecting an unusual increase, then decrease, in the amounts of methane in the atmosphere of the planet Mars; in addition, organic chemicals were detected in powder drilled from a rock by the "Curiosity" rover. Also, based on
Timeline of Mars Science Laboratory atmosphere. This creates wind, which in turn stirs up more dust. This results in a feedback loop that scientists are still trying to understand. NASA reported on June 20, 2018 that the dust storm had grown to completely cover the entire planet. On June 4, 2018, NASA announced that "Curiosity" ability to drill has been sufficiently restored by engineers. The rover had experienced drill mechanical problems since December 2016. On June 7, 2018, NASA announced a cyclical seasonal variation in atmospheric methane, as well as the presence of kerogen and other complex organic compounds. The organic compounds were from mudstone