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) ceased communications on June 10 and entered hibernation on June 12, 2018. It was hoped it would reboot once the atmosphere cleared, but it did not, suggesting either a catastrophic failure or that a layer of dust has covered its solar panels. NASA hopes to reestablish contact with the rover, citing a windy period that could potentially clean off the solar panels of the rover. The primary surface mission for "Opportunity" was planned to last 90 sols (92 Earth days). The mission has received several extensions and has been operating for days since landing. An archive of weekly updates on