Curiosity (rover) no chance of obtaining funds in Europe, at that time, of the scale previously considered necessary for a Mars rover, so the team used innovative methods to reduce the cost to less than 4% of the cost of the "Curiosity" mission. They also had only one shot, with no funding for repeat missions (it was named "Beagle 2" as a successor to , not to an earlier rover). It was considered a large risk, and, although "Beagle 2" did successfully survive its entry, descent, and landing, incomplete deployment of the solar panels hampered communication back to Earth. The team has
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