Evolution of India’s Space Programme

Introduction — Why Should You Care About Space?

Imagine you are sitting in a remote village in Arunachal Pradesh. A cyclone is approaching the coast of Odisha. A fisherman in the deep sea has no idea about the approaching storm. A farmer in Rajasthan does not know that a drought is developing. And an Indian missile, somewhere in testing, needs to know its exact location. What connects all these situations? The answer — quite simply — is India’s Space Programme and ISRO.

India’s journey in space is not about landing on the Moon for prestige or beating other countries in a ‘space race’. From Day One, Dr. Vikram Sarabhai — the father of India’s space programme — made it absolutely clear: space technology must serve the common man. It must solve the problems of a developing nation. This philosophy is what makes ISRO unique in the world, and why it is so important for UPSC.

India’s Space Journey

India’s space journey can be divided into five distinct phases. Think of it like a student’s career — from going to school, to learning skills, to getting a job, to becoming a specialist, and finally becoming a leader. Each phase built upon the previous one.

Phase 1: Foundational Phase (1960s–1970s) — Laying the Foundation

Every great journey begins with a first step. For India, that first step was taken not with a rocket, but with a vision. In the early 1960s, India had just become independent, and the country was focused on solving massive problems — food security, poverty, illiteracy. Into this context stepped Dr. Vikram Sarabhai, who argued that space technology was not a luxury but a necessity for development.

Key Characteristics of this Phase

• Laid the institutional and scientific base for India’s future space programme
• Anchored space technology firmly to national development goals — not prestige
• Philosophy: Use space for societal development

Major Milestones

Year	Milestone	Significance
1962	INCOSPAR established	India’s first official body for space research coordination
1963	Nike-Apache (first sounding rocket) launched from Thumba, Kerala	India’s entry into space research — rocket borrowed from the USA
1969	ISRO formed	Replaced INCOSPAR; gave institutional strength to India’s space programme
1975	Aryabhata — India’s first satellite	Launched by USSR’s Kosmos-3M from Kapustin Yar; India became a satellite nation

🧠 Insight:  Why was the first sounding rocket launched from Thumba in Kerala? Because Thumba lies very close to the Earth’s magnetic equator, making it ideal for studying the ionosphere. And notice — we borrowed an American rocket! There was no shame in learning from others. This spirit of practical learning over national ego defined early ISRO.

Phase 2: Experimental & Learning Phase (1980s) — Building Self-Reliance

If Phase 1 was ‘going to school’, Phase 2 was ‘doing projects and experiments’. The keyword here is Atmanirbharta — self-reliance. India had learned from others; now it was time to build its own capabilities. The defining achievement of this phase was developing indigenous launch vehicles and satellites.

Key Characteristics

• Strong emphasis on self-reliance — reducing dependence on foreign technology
• Development of India’s first indigenous launch vehicle (SLV-3)
• Transition from experimental missions to operational capability

Major Milestones

Year	Mission/Programme	Key Fact
1979-81	Bhaskara I & II	Experimental Earth observation — launched by USSR from Baikonur
1980	Rohini via SLV-3	India’s FIRST satellite launched by an INDIGENOUS rocket — India became 7th country in world to do this!
1981	APPLE (Ariane Passenger Payload Experiment)	India’s first experimental geostationary communication satellite — launched from French Guiana
1983	INSAT-1B	Beginning of India’s communication satellite era — launched by US Space Shuttle Challenger
1988	IRS-1A	India’s first operational remote sensing satellite — launched by USSR

🧠 Insight:  The SLV-3 mission of 1980 is one of India’s proudest moments. It was led by a young scientist named Dr. A.P.J. Abdul Kalam. This achievement made India only the 7th country in the world to indigenously launch a satellite. The earlier failure (1979) made the 1980 success even sweeter — a lesson in persistence.

Note: India is often described as the 6th spacefaring nation because ESA is not a sovereign country and the UK’s launch capability was not sustained; however, chronologically, India was the 7th country to independently place a satellite in orbit (1980). See here

Phase 3: Operational & Expansion Phase (1990s–2000s) — Reliability and Global Recognition

India had proved it could launch satellites. Now it needed to become reliable — to do it again and again, consistently. This phase is about PSLV, India’s workhorse rocket, and entering the global commercial launch market. Think of a small business that, after years of struggle, finally starts getting clients from abroad.

Key Characteristics

• Achievement of operational maturity in launch vehicle technology
• Entry of India into the global commercial launch services market
• Consolidation of indigenous capabilities in both satellites and launch vehicles

Major Milestones

Year	Event	Significance
1994	PSLV operationalised (PSLV-D2)	India’s most reliable rocket — became the ‘workhorse’ for Sun-Synchronous Orbit missions
2001	GSLV introduced (GSLV-D1)	Enabled heavier payloads into GTO; marked progress toward indigenous cryogenic engine
Late 1990s	Commercial foreign satellite launches begin	India starts earning revenue by launching foreign satellites — a global recognition of Indian capability

🧠 Key Concept — PSLV vs. GSLV:  PSLV (Polar Satellite Launch Vehicle) is India’s most reliable rocket. It is ideal for placing satellites in Sun-Synchronous Orbits (SSO) — used for Earth observation, remote sensing. GSLV (Geosynchronous Satellite Launch Vehicle) is a heavier rocket used for communication satellites that go into Geostationary Transfer Orbit (GTO). The key challenge with GSLV was developing an indigenous cryogenic engine — which India mastered over the years.

Phase 4: Interplanetary & Advanced Missions (2010s) — Scientific Ambition

If Phase 3 was about becoming commercially competitive, Phase 4 was about making the world sit up and take notice. This is the phase of Chandrayaan, Mangalyaan, NavIC, and Mission Shakti. India was no longer just a service provider — it was a serious space science nation. And it was doing all of this at a fraction of the cost of other countries.

Key Characteristics

• Expansion into deep-space and interplanetary exploration
• Demonstration of cost-effective, precision-driven space missions
• Integration of space technology with strategic, defence, and security requirements
• Deployment of navigation and deep-space communication capabilities

Major Milestones

Year	Mission	Historic Achievement
2008	Chandrayaan-1	India’s first lunar mission — confirmed presence of WATER MOLECULES on the Moon
2014	Mars Orbiter Mission (Mangalyaan)	India became FIRST country to reach Mars on its MAIDEN attempt; lowest-cost Mars mission globally
2018	NavIC (IRNSS) fully operational	India’s own GPS — provides positioning up to 1,500 km beyond Indian borders
2019	Mission Shakti (ASAT test)	India demonstrated Anti-Satellite capability — became 4th country to do so
2019	NSIL established	NewSpace India Limited — commercial arm of ISRO for revenue generation

🧠 Insight:  Mangalyaan cost approximately ₹450 crore — less than the budget of some Hollywood movies. It was cheaper than the movie ‘Gravity’! This is the magic of ISRO — doing more with less. This cost-effectiveness is a result of India’s unique approach: frugal engineering, indigenous components, and talented scientists.

Phase 5: Human Spaceflight & Strategic Phase (2020s–Present) — Becoming a Space Power

India is no longer just a ‘space-capable nation’ — it is becoming a comprehensive ‘space power’. This phase is defined by three big shifts: India sending humans to space (Gaganyaan), the private sector being allowed into space, and India becoming a serious player in global space diplomacy.

Key Characteristics

• Development of human-rated launch vehicles and life-support systems
• India’s transition from ‘space-capable nation’ to a comprehensive ‘space power’
• Growing private sector participation under space sector reforms
• Strengthened space diplomacy, including international collaborations

Major Milestones

Year	Event	Significance
2020	IN-SPACe established	Single-window facilitator for private sector in space — like SEBI for space industry
2023	Chandrayaan-3	FIRST nation to soft-land near Moon’s South Polar Region — a historic global achievement
2023	Aditya-L1	India’s FIRST space-based solar observatory — placed in halo orbit around Sun-Earth L1 point
Ongoing	Gaganyaan Programme	India’s first human spaceflight mission to LEO using human-rated LVM3

🎯 Chandrayaan-3 is extremely important. Remember: (1) Launched by LVM3, (2) First to soft-land near Moon’s South Pole, (3) Lander: Vikram, Rover: Pragyan. The South Pole is scientifically significant because it has permanently shadowed regions where water ice may exist.

ISRO — The Organisation

The Indian Space Research Organisation (ISRO) was established in 1969, succeeding the Indian National Committee for Space Research (INCOSPAR). It functions under the Department of Space (DoS), which directly reports to the Prime Minister of India — reflecting the strategic importance of space in India’s national agenda. Headquartered in Bengaluru, Karnataka, it was founded under the leadership of Dr. Vikram Sarabhai, the father of India’s space programme.

Core Objectives of ISRO

1.  Develop and operate launch vehicles — for independent access to space

2.  Design and deploy satellites — for communication, navigation, remote sensing, and science

3.  Conduct planetary exploration missions — Moon, Mars, Venus, Sun

4.  Promote space applications — for socio-economic development of India

5.  Support national security — and strategic autonomy

Key Centres of ISRO

Centre	Location	Primary Role
VSSC (Vikram Sarabhai Space Centre)	Thiruvananthapuram, Kerala	India’s LEAD centre for launch vehicle design and development
URSC (U R Rao Satellite Centre)	Bengaluru, Karnataka	India’s LEAD centre for satellite design, development, and integration. Renamed in honour of Dr. Udupi Ramachandra Rao, former ISRO Chairman.
SDSC-SHAR	Sriharikota, Andhra Pradesh	India’s primary orbital launch site; launch vehicle integration and launch operations
SAC (Space Applications Centre)	Ahmedabad, Gujarat	Remote sensing and communication satellite payloads; GAGAN, NavIC payloads
NARL (National Atmospheric Research Laboratory)	Gadanki, Andhra Pradesh	Atmospheric and ionospheric research using ground-based instruments

ISRO’s Launch Stations

A rocket is only as good as its launch site. India currently has one fully operational orbital launch site, one historical sounding rocket range, and one new spaceport under development. Each location was chosen for specific scientific, geographical, and safety reasons.

SDSC-SHAR, Sriharikota — India’s Gateway to Space

The Satish Dhawan Space Centre (SDSC-SHAR) in Sriharikota, Andhra Pradesh, is India’s primary — and currently only fully operational — orbital launch site. Established in 1971 and renamed in 2002 after ISRO’s legendary former Chairman Prof. Satish Dhawan, it sits on a barrier island between Pulicat Lake and the Bay of Bengal.

Why Was Sriharikota Chosen?

• East coast location:  Rockets launch eastward, gaining a free boost from Earth’s rotational velocity (~460 m/s at this latitude) — saving fuel and increasing payload capacity
• Over-ocean trajectory:  After launch, spent rocket stages fall into the Bay of Bengal — a vast, sparsely populated stretch of ocean. Safety for people; no debris falling on inhabited land.
• Near the equator:  Being at ~13.9°N latitude gives better fuel efficiency for geostationary missions. The closer to the equator, the less fuel needed to reach GEO.
• Infrastructure:  Two operational launch pads, dedicated tracking stations, solid propellant processing plants, satellite integration facilities

Kulasekarapattinam Spaceport — India’s Second Launch Site

Approved in 2023, the new spaceport at Kulasekarapattinam in Tamil Nadu will be India’s second orbital launch site, designed primarily for SSLV and small satellite launches. It solves a specific geographic problem that Sriharikota has.

The ‘Dog-Leg’ Problem

From Sriharikota, rockets heading south (into polar/Sun-synchronous orbits) have to perform a ‘dog-leg manoeuvre’ — a costly trajectory bend to avoid flying over Sri Lanka. This wastes fuel and reduces payload capacity. Kulasekarapattinam is located further south, allowing direct southward launches over the open ocean, eliminating the dog-leg penalty entirely.

• Particularly ideal for SSLV and small satellite launches into polar/SSO — the fastest-growing market
• Will support India’s expanding commercial space sector with higher launch frequency

TERLS, Thumba — Where It All Began

The Thumba Equatorial Rocket Launching Station (TERLS) in Thiruvananthapuram, Kerala, is where India’s space journey started in 1963. Today it is used only for sounding rockets, not orbital launches. Its significance: it sits right on the magnetic equator, making it ideal for upper atmospheric and equatorial electrojet studies.

⚠️ Common Confusion:  Abdul Kalam Island (Odisha) and Chandipur (Odisha) are often mistaken for ISRO launch sites. They are actually DRDO (Defence Research and Development Organisation) missile test ranges — not ISRO facilities. India’s ONLY orbital launch sites are Sriharikota (operational) and Kulasekarapattinam (under development).