Key challenges during Chandrayaan-3 soft-landing on Moon
1. No atmosphere on the Moon at 100 km altitude making parachutes ineffective for slow descent.
2. Chandrayaan-2 failed between 30 km and 100 meters altitude due to software glitch causing uncontrolled speed during landing.
3. Chandrayaan-3 lander Vikram might encounter sudden terrain changes at 100 meters altitude leading to software glitches or altitude sensor errors.
4. Lunar dust during landing poses risks like sensor errors, premature thruster shutdowns.
5. Lunar dust could persist even after landing speed reduction potentially obscuring lander’s camera lens and causing faulty readings.