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.
• **Missiles under DRDO** include Agni series (strategic ballistic missiles), Prithvi (tactical surface-to-surface), BrahMos (supersonic cruise missile, joint Indo-Russian venture) and Akash (surface-to-air missile system).

Formulas / Key Facts

1. **ISRO Headquarters**: Bengaluru, Karnataka. Founder: Dr Vikram Sarabhai. Current Chairman (as of 2024): S. Somanath. 2. **DRDO Headquarters**: New Delhi. Established: 1958. Founder: Dr A.P.J. Abdul Kalam played a pivotal role in missile programmes. 3. **Chandrayaan-1 (2008)**: First Indian lunar mission; discovered water molecules (H₂O and OH) on Moon using NASA's Moon Mineralogy Mapper. 4. **Chandrayaan-2 (22 July 2019 launch)**: Orbiter, lander (Vikram), rover (Pragyan). Lander lost communication during descent; orbiter continues to function and send data. 5. **Chandrayaan-3 (14 July 2023 launch, 23 August 2023 landing)**: Successful soft landing near lunar South Pole. Rover Pragyan operated for ~14 Earth days (1 lunar day). 6. **Mangalyaan / Mars Orbiter Mission (5 November 2013 launch, 24 September 2014 Mars orbit insertion)**: Cost approx. ₹450 crore—cheaper than Hollywood's *Gravity* film budget. Mission life extended beyond original 6 months. 7. **Gaganyaan**: Aims to send 3 astronauts to 400 km orbit for 3–7 days. First uncrewed test flight completed in October 2023. Human mission targeted for 2025. 8. **Agni Missiles**: Agni-I (700 km range), Agni-II (2000 km), Agni-III (3000 km), Agni-IV (4000 km), Agni-V (over 5000 km, ICBM-class, canister-launched). 9. **BrahMos Missile**: Supersonic cruise missile (speed: Mach 2.8–3.0), range ~290 km (export version ~400 km). Joint venture between India's DRDO and Russia's NPO Mashinostroyeniya. Named after Brahmaputra and Moskva rivers. 10. **Aditya-L1 (2 September 2023 launch)**: India's first solar mission to study the Sun's corona, chromosphere and solar winds. Placed at Lagrange Point 1 (L1), about 1.5 million km from Earth.

Worked Examples

**Example 1**: Which ISRO mission was the first to successfully land on the lunar South Pole region? **Solution**: Chandrayaan-3 (2023) achieved this milestone. Chandrayaan-1 was an orbiter mission with an impact probe; Chandrayaan-2's lander failed during descent. Only Chandrayaan-3 completed a soft landing near the South Pole in August 2023.

**Example 2**: Name the missile jointly developed by India and Russia that is known for supersonic speed. **Solution**: BrahMos. This is a cruise missile with a speed of around Mach 2.8–3.0, making it one of the fastest operational cruise missiles in the world. It is a joint venture between DRDO and Russia's NPO Mashinostroyeniya.

**Example 3**: Which Indian mission made the country the first Asian nation to reach Mars orbit? **Solution**: Mangalyaan (Mars Orbiter Mission), launched in 2013 and inserted into Mars orbit in 2014. India became the first country to succeed in Mars orbit insertion on its maiden attempt.

Common Mistakes

1. **Confusing Chandrayaan-2 and Chandrayaan-3**: Students often remember "Chandrayaan-2 landed successfully" because of media coverage. **Fix**: Chandrayaan-2's lander (Vikram) lost contact; only Chandrayaan-3 achieved a soft landing in 2023. 2. **Mixing ISRO and DRDO roles**: Thinking DRDO launches satellites or ISRO develops missiles. **Fix**: ISRO = space missions; DRDO = defence R&D including missiles, radars and weapon systems. 3. **Forgetting mission years**: Writing "Mangalyaan was launched in 2014" instead of 2013. **Fix**: Launch and orbit insertion are different events. Mangalyaan launched November 2013, entered Mars orbit September 2014. 4. **BrahMos origin**: Some recall it as purely Indian. **Fix**: BrahMos is an Indo-Russian joint venture; the name itself combines Brahmaputra (India) and Moskva (Russia). 5. **Agni missile ranges**: Mixing up which Agni variant has which range. **Fix**: Remember the pattern—Agni-I is shortest (~700 km), and the number increases with range (Agni-V exceeds 5000 km).

Quick Reference

• **ISRO HQ**: Bengaluru; DRDO HQ: New Delhi.
• **Chandrayaan-1 (2008)**: discovered lunar water; Chandrayaan-3 (2023): first South Pole soft landing.
• **Mangalyaan (2013 launch)**: India's Mars orbiter, first Asian nation to Mars, maiden-attempt success.
• **Gaganyaan**: India's human spaceflight programme, target ~2025.
• **BrahMos**: Indo-Russian supersonic cruise missile, Mach 2.8–3.0 speed.
• **Agni-V**: India's longest-range ballistic missile, over 5000 km, ICBM-class.
• **Aditya-L1 (2023)**: India's first solar observatory mission at Lagrange Point L1.