UPSC Notes

Weaponisation of Outer Space

PYQs

5

Articles

1

Momentum

15

Phase IFoundation

Background

Overview

Critical for understanding evolving international security dynamics, potential for new arms races, challenges to global stability, and India's strategic interests as an emerging space power.

The weaponisation of outer space refers to the development, deployment, and use of military capabilities in or through space, including anti-satellite weapons (ASATs), space-to-ground weapons, and non-kinetic means like jamming or cyberattacks. This phenomenon raises significant concerns about international security and stability.

Phase IIStatic core

Facts & tables

Key facts

US public admission

The US publicly admitted to deploying active space control weapons, sparking a fresh debate.

Types of weapons

Capabilities include kinetic (destroying satellites) and non-kinetic (disrupting communications, cyberattacks) methods.

ASAT capabilities

Four countries (US, Russia, China, India) have demonstrated anti-satellite (ASAT) missile capabilities.

International reaction

Countries like China and Russia have urged the US to stop expanding military capabilities in space, calling for demilitarisation.

Reference table

Static syllabus anchors

TypeReference
Conceptual areaInternational Security
Conceptual areaArms Control

Reference table

Institutions & roles

BodyRole
US Space ForceDevelops and deploys space military capabilities
United NationsForum for disarmament discussions
Phase IIIExam lens

Prelims angle

Overview

Prelims angle: Multi-statement analysis

Prelims angle: Factual recall

Quick revision

  • Deployment of military assets in space.
  • Includes ASATs, space-to-ground, cyber, jamming.
  • US, Russia, China, India have ASAT capabilities.
  • Raises concerns about arms race and stability.
  • Lack of comprehensive international law.

High-confidence PYQs

Topic timeline

International SecurityArms Control

US deploys weapons in space: What international law says on militarisation

16 Sep 2026 · The weaponisation of outer space involves deploying military assets and capabilities in space, ranging from kinetic anti-satellite weapons to non-kinetic cyber and jamming attacks, leading to an international arms race and calls for demilitarisation.

Read article

Related topics

Practice writing on this topic

UPSC has asked 5 linked questions on Weaponisation of Outer Space in Mains. Write an answer to one — and get it evaluated.

UPSC Prelims PYQs on Weaponisation of Outer Space

Practice official previous year questions asked by UPSC related to this concept.

Editorial & Review Process

Every revision note and practice question on UPSC Practice is researched using authoritative primary sources and reviewed for factual accuracy, syllabus relevance, and exam value. Read our Editorial Policy.

Verified Quality