Maarg Manthan · Topic 19.5

Communication – Satellites and Cyberspace

Geography › Transport, Communication and International Trade · Topic 19.5

Communication is the transmission of information, and modern systems use optic fibre cables, mobile networks, communication satellites and the internet. Satellites in geostationary orbit make the cost and time of communication independent of distance, and cyberspace, the network of computers on the internet, has spread faster than any earlier technology. India has over 1.3 billion telephone connections, a national satellite system and a large digital economy.

5 min read · UPSC Prelims · Geography · Transport, Communication and International Trade

At a Glance

Geostationary orbit About 35,786 km above the equator
India’s satellites INSAT/GSAT, IRS, NavIC
First Indian satellite Aryabhata, 1975
Telecom base About 1.35 billion connections (mid-2026)
Broadband More than 1 billion connections
Exam link UPSC Prelims, Geography: Transport, Communication and International Trade

Where Does It Fit?

This is the fifth topic of the macro on transport, communication and international trade. The previous topics described the movement of goods and people, and this one covers the movement of information. The next topic begins international trade with its basis and aspects. Previous topic: Inland Waterways, Oceanic Routes and Air Transport. Next topic: Basis and Aspects of International Trade.

How Has Communication Technology Changed?

In short: from the telegraph to the smartphone, the speed and reach of communication have grown, and distance has almost stopped mattering.

The telegraph helped the colonisation of the American West, and the telephone helped the growth of cities, as firms located their headquarters in the centre and branch offices in smaller towns. Optic fibre cables, which carry large amounts of data as light, rapidly and securely, replaced copper cables. By the 1990s, the digitisation of information merged telecommunication with computers into the internet. In developing countries, the mobile phone has been the most important tool for connecting rural areas. In India, 4G spread rapidly after 2016, 5G services began in October 2022, and by mid-2026 the Telecom Regulatory Authority of India reported about 1.35 billion telephone connections, of which most are wireless, and more than a billion broadband connections. The BharatNet programme is extending optic fibre to village panchayats, and the Unified Payments Interface has made mobile phones a main means of payment.

How Do Communication Satellites Help?

Orbit or type	Features	Uses
Geostationary	About 35,786 km above the equator, orbiting with the Earth’s rotation so that the satellite appears fixed in the sky	Television, telephone, broadcasting, weather; the INSAT and GSAT series
Polar and sun-synchronous	Low orbit, 600 to 900 km, passing over the poles and covering the whole Earth in strips	Remote sensing and earth observation; the Indian Remote Sensing satellites
Low Earth orbit constellations	Hundreds or thousands of small satellites at 500 to 1,200 km	Satellite internet such as Starlink and OneWeb with low delay
Navigation	Medium orbit or regional	GPS of the United States, Galileo, BeiDou and India’s NavIC, a regional system with seven satellites

Communication satellites make the cost and time of communication independent of distance: it costs the same to communicate over 500 km as over 5,000 km. India started with the experimental Aryabhata in 1975, followed by Bhaskar, Rohini and the Indian National Satellite System, INSAT, begun in 1983, which is among the largest domestic communication systems in the Asia-Pacific. ISRO’s recent work includes Chandrayaan-3 in 2023, the NISAR earth observation satellite with NASA in 2025 and plans for the Gaganyaan human spaceflight mission, whose first uncrewed flight has been repeatedly postponed and may slip to late 2026 or 2027. Satellite internet is the new frontier: Starlink holds a licence in India but is still awaiting spectrum and security clearance, and the Digital Communications Commission approved most of the regulator’s recommendations on satellite spectrum charges in September 2026, so the service is likely to start only in 2027.

What Is Cyberspace, and What Are Its Risks?

Cyberspace: the world of computer networks and the internet, including the World Wide Web. The users grew from under 50 million in 1995 to over two billion in 2010 and more than five billion today, and growth has moved from the United States to Asia, with India and China among the largest numbers.
Digital India: Aadhaar, UPI, e-governance, online education and e-commerce have made the digital economy a growth engine, but the digital divide persists between urban and rural areas, men and women, and rich and poor, as in Population Composition – Sex, Age and Occupation.
Cyber security: risks include cybercrime, financial fraud, hacking, ransomware, data theft, misinformation and attacks on critical infrastructure. India’s legal framework includes the Information Technology Act of 2000, the Indian Computer Emergency Response Team (CERT-In) and the Digital Personal Data Protection Act of 2023.
Geopolitics: submarine cables carry nearly all international data and are vulnerable to damage, 5G equipment raises trust and supply-chain issues, and the control over data, platforms and artificial intelligence has become an area of strategic competition.

As an analytical point, communication networks decide where information, finance and services can be located, so they reshape economic geography as much as roads and railways did, and a village with a mobile phone and a bank account on UPI is far more connected to the market than one with only a road. The task is to close the digital divide while making the network safe and open, as in Rural Settlements in India.

Why Is This Topic Important?

Concepts Orbits and satellite uses
India INSAT, NavIC, internet data
Security Cyber risks and laws

What Came Next?

The next topic begins the study of international trade with its basis and aspects. Next topic: Basis and Aspects of International Trade.

Key People and Terms

Optic fibre Glass cable carrying light signals
Geostationary Orbit fixed over one point
INSAT Indian National Satellite System
NavIC Indian regional navigation system
Cyberspace Network of computers and the internet
Digital divide Gap in access to technology

Exam Corner

Points to Remember

Geostationary orbit: about 35,786 km.
Aryabhata was launched in 1975.
INSAT began in 1983.
NavIC is India’s navigation system.
5G started in India in October 2022.

Do Not Confuse With

INSAT and IRS Communication versus remote sensing
GPS and NavIC Global versus regional navigation
Geostationary and polar orbit Fixed over the equator versus pole-to-pole

Memory Hook

Fibre carries the light, geostationary sits at 36,000, polar scans the strips; NavIC points the way.

Mains Angle

Questions ask about satellites, digital growth and cyber risks. These points add depth.

Space Satellite services
Digital Growth and divide
Security Laws and capacity

A Question You May Face

An original practice question, not a past paper question.

“Discuss the role of satellites and the internet in India’s development and the cyber security challenges that arise from them.”

How to Answer

Technology Fibre to 5G.
Space INSAT, IRS, NavIC.
Digital Use and divide.
Risks Cyber security.

GS Relevance

Prelims: types of satellites, INSAT and IRS, NavIC, internet and telecom data. GS Paper 3: science and technology, space, cyber security and digital economy.

Frequently Asked Questions

What is a geostationary satellite?

A geostationary satellite orbits about 35,786 kilometres above the equator and moves with the same speed as the rotation of the Earth, so it appears fixed above one point. It is used for communication, broadcasting and weather observation, as in India's INSAT and GSAT series.

What is the difference between INSAT and IRS satellites?

INSAT satellites are placed in geostationary orbit and are used for telecommunication, television broadcasting, weather forecasting and disaster warning. The Indian Remote Sensing satellites are in polar sun-synchronous orbit and observe the Earth's surface for agriculture, water, forests and mapping.

What is NavIC?

NavIC, the Navigation with Indian Constellation, is India's regional satellite navigation system developed by ISRO, with seven satellites. It provides accurate positioning over India and a region extending about 1,500 kilometres around it, and is an Indian alternative to the American GPS.

What is cyberspace?

Cyberspace is the world of computerised networks, including the internet and the World Wide Web. It has grown rapidly from under 50 million users in 1995 to over five billion today, and has become a space of commerce and governance, and also of risks such as cybercrime and attacks on infrastructure.

How many telecom subscribers does India have?

According to the Telecom Regulatory Authority of India, the total number of telephone connections in India was about 1.35 billion in mid-2026, with most of them wireless, and more than one billion broadband connections. 5G services began in October 2022, and private companies hold most of the market share.

PYQ Practice — Statement Analysis

1 A geostationary satellite appears fixed over one point on the Earth.

True

It orbits with the Earth's rotation.

2 Aryabhata, India's first satellite, was launched in 1975.