harbingers_kiss
21-07-2007, 03:05 AM
http://science.nasa.gov/headlines/y2007/20jul_duststorm.htm?list998437
July 20, 2007: Having explored Mars for three-and-a-half years in what were missions originally designed for three months, NASA's Mars rovers Spirit and Opportunity are facing perhaps their biggest challenge.
For nearly a month, a series of severe Martian summer dust storms has affected the rover Opportunity and, to a lesser extent, its twin, Spirit. The dust in the Martian atmosphere over Opportunity has blocked 99 percent of direct sunlight to the rover, leaving only the limited diffuse sky light to power it. Scientists fear the storms might continue for several days, if not weeks. "We're rooting for our rovers to survive these storms, but they were never designed for conditions this intense," says Alan Stern, associate administrator of NASA's Science Mission Directorate, Washington.
The animated global map of Mars, below, shows how the opacity of the Martian atmosphere has increased since late June. Blue areas denote clear air, red areas are thick with dust:
more....
http://science.nasa.gov/headlines/y2007/20jul_duststorm.htm?list998437
July 20, 2007: Having explored Mars for three-and-a-half years in what were missions originally designed for three months, NASA's Mars rovers Spirit and Opportunity are facing perhaps their biggest challenge.
For nearly a month, a series of severe Martian summer dust storms has affected the rover Opportunity and, to a lesser extent, its twin, Spirit. The dust in the Martian atmosphere over Opportunity has blocked 99 percent of direct sunlight to the rover, leaving only the limited diffuse sky light to power it. Scientists fear the storms might continue for several days, if not weeks. "We're rooting for our rovers to survive these storms, but they were never designed for conditions this intense," says Alan Stern, associate administrator of NASA's Science Mission Directorate, Washington.
The animated global map of Mars, below, shows how the opacity of the Martian atmosphere has increased since late June. Blue areas denote clear air, red areas are thick with dust:
more....
http://science.nasa.gov/headlines/y2007/20jul_duststorm.htm?list998437