Space, defence & nuclear
- ISRO & Space Sector Reforms
- Gaganyaan Mission
- Chandrayaan & Aditya
- NAVIC
- India’s Space Programme
- Defence Indigenisation
- India’s Nuclear Programme
18+
Sci-Tech topics
GS-3
Core paper
Space→AI
Coverage
Updated
Jun 2026
Digital & emerging tech
- 5G & 6G
- National Quantum Mission
- National Supercomputing (PARAM)
- Semiconductor Mission
- India’s AI Policy
- India Stack & DPI
- CBDC / Digital Rupee
Biotech & clean energy
Quick reference
UPSC angle
Science & Tech is current-affairs heavy. Anchor on India’s flagship missions (space, defence, nuclear, quantum, semiconductors, green hydrogen) and digital public infrastructure.
Frequently asked questions
What does the Science & Technology hub cover?
India’s space, defence and nuclear programmes, biotechnology, digital and emerging technologies (5G, AI, quantum, semiconductors) and clean energy.
How is science & technology tested in UPSC?
Mostly through current affairs — flagship missions, new technologies and their applications and implications.
Which sci-tech topics are most important?
ISRO missions, defence indigenisation, semiconductors, AI, India Stack/DPI and green hydrogen.
Do I need a science background?
No — UPSC tests awareness and implications of technology, not technical depth.