As Night Falls, India's Lunar Lander/Rover Goes to Sleep. Probably Forever

India’s Chandrayaan-3 mission delivered its Vikram lander and Pragyan rover to the lunar surface on August 23rd. Now, as the lunar day ends two weeks later, the rover’s mission may be over. The Indian Space Research Organisation (ISRO) has put Pragyan into sleep mode. We’re accustomed to rover missions that last years, thanks largely to …