India achieves historic feat, landing on lunar South Pole
PM Modi lauds Indians and space scientists for the achievement's significance
Mission's climax: ISRO's Automatic Landing Sequence pivotal in final moments
15-20 minutes before landing crucial for Chandrayaan-3's triumph
ISRO's cautious approach after previous mission's near-miss; "20 or 17 minutes of terror"
Autonomous Vikram lander engines during descent spark nationwide celebration