Print There will be some nervous souls in San Diego Thursday when NASA’s $3 billion rover Perseverance attempts to land on Mars. The descent will be so wild the space agency is describing it as “seven minutes of terror.” One of the rover’s descent cameras was built by Malin Space Science Systems of Sorrento Valley, which also provided four other cameras for Perseverance, including imagers that will look for past signs of life. “We going to help Perseverance find good places to land and avoid the bad ones,” said Mike Ravine, advanced projects manager at MSSS, which has about 80 employees.