NASA's Mars Exploration Rover Opportunity sent signals Monday morning, July 23, indicating its power situation improved slightly during the days when it obeyed commands to refrain from communicating with Earth in order to conserve power.
Dust storms on Mars in recent weeks have darkened skies over both Opportunity and its twin, Spirit. Last week Opportunity was commanded to go into a very low-power state and to communicate only once every three days. Next scheduled transmission will be Thursday, July 26, though controllers may command Opportunity to send information on Tuesday, July 24. "The outlook for both Opportunity and Spirit depends on the weather, which makes it unpredictable, " said JPL's John Callas, project manager for both rovers. "If the weather holds where it is now or gets better, the rovers will be OK. If it gets worse, the situation becomes more complex ".