Endeavour 's systems are functioning normally as it circles the Earth at a speed of about 5 miles a second and an altitude of about 150 miles. New radar images of Brazil, South Africa and the South Island of New Zealand were unveiled this afternoon by elated scientists of the Shuttle Radar Topography Mission. Mapping operations continued smoothly into the mission's fifth day, with both radar and orbiter systems working flawlessly. By early afternoon, more than 29 million square miles had been mapped, representing more than 61 percent of the planned coverage for the mission. That's equivalent to the combined area of North America, South America and Africa.
Additional steps are under review for their potential propellant-saving potential.
Optimism is increasing that these measures will enable Endeavour to complete its planned mapping operations. Blue Team members Janice Voss and Mamoru Mohri spoke with reporters from CNN, NBC 's Today Show and KGO Radio in San Francisco earlier today. This event was part of a NASA effort to encourage students to pursue careers in science, engineering and math. All of Endeavour 's systems are functioning normally as it circles the Earth every 90 minutes at an altitude of about 150 miles. The next status report will be issued at 6 a.m. Wednesday, or as mission events warrant.