Timeline of Mars Science Laboratory Sun, marking the first time a planetary transit has been observed from a celestial body besides Earth. On June 24, 2014, "Curiosity" completed a Martian year—687 Earth days—after finding that Mars once had environmental conditions favorable for microbial life. On June 27, 2014, "Curiosity" crossed the of its "" and is now in territory that may get even more interesting, especially in terms of Martian geology and landscape (). On July 12, 2014, "Curiosity" imaged the first laser spark on Mars (; video (01:07).) On August 6, 2014, "Curiosity" celebrated its second anniversary since landing on Mars in 2012. On
Opportunity (rover) early June 2018, a large global-scale dust storm developed and within a few days the rover's solar panels were not generating enough power to maintain communications, with last contact on June 10, 2018. NASA stated they did not expect to resume communication until after the global dust storm subsided, but the rover kept silent even after the storm ended in early-October, suggesting either a catastrophic failure or a layer of dust covered its solar panels. The team remains hopeful that a windy period between November 2018 and January 2019 may clear the dust from its solar panels, as has happened