Scientific Research — ISRO, DRDO and Major Indian Missions

Overview

Scientific Research—specifically India's space and defence organisations and their landmark missions—is a moderate-scoring topic in SSC GD that typically yields 2–4 questions per paper. This topic tests your awareness of recent satellite launches, missile programmes, major research centres and their roles, plus notable achievements like Chandrayaan, Mangalyaan and Gaganyaan. Questions often ask for organisation headquarters, mission years, names of missiles or satellites, and the purpose of a specific mission. Mastery here means remembering the **what, when and why** of each mission, not intricate technical details. Most questions are factual recall: "Which organisation developed BrahMos?" or "What was the primary objective of Chandrayaan-3?" Keep your focus on missions launched or announced in the last 5–7 years, as current affairs blend seamlessly with static GK in this domain.

Candidates often confuse similar-sounding missions (Chandrayaan vs Gaganyaan) or forget which body launched which satellite. The key is systematic categorisation: ISRO handles space, DRDO handles defence R&D, and each has signature projects. For SSC GD, you do not need to memorise every payload parameter—just the mission name, year, objective and result.

Key Concepts

• **ISRO (Indian Space Research Organisation)** is India's premier space agency headquartered in Bengaluru. It conducts satellite launches, planetary missions and develops launch vehicles (PSLV, GSLV) for civilian and commercial purposes.
• **DRDO (Defence Research and Development Organisation)** is headquartered in New Delhi and focuses on defence technology—missiles, radars, armaments, naval systems and strategic systems. Key programmes include Integrated Guided Missile Development Programme (IGMDP).
• **Chandrayaan missions** are lunar exploration projects. Chandrayaan-1 (2008) discovered water molecules on the Moon; Chandrayaan-2 (2019) aimed for a soft landing near the South Pole (orbiter succeeded, lander lost contact); Chandrayaan-3 (2023) achieved a successful soft landing.
• **Mangalyaan (Mars Orbiter Mission, 2013)** made India the first Asian nation and the first country globally to reach Mars orbit in its maiden attempt. It orbits Mars and studies surface features and atmosphere.
• **Gaganyaan** is India's upcoming human spaceflight programme aiming to send Indian astronauts (vyomanauts) to low Earth orbit by 2025. Test flights and crew module recoveries have already been conducted.
• **PSLV (Polar Satellite Launch Vehicle)** is ISRO's workhorse rocket for launching satellites into polar and sun-synchronous orbits. It has a near-perfect success rate and launched Chandrayaan-1, Mangalyaan and numerous foreign satellites.
• **GSLV (Geosynchronous Satellite Launch Vehicle)** is used for heavier payloads and geostationary satellites. GSLV Mk III (now called LVM3) launched Chandrayaan-2 and will launch Gaganyaan missions.