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EditorialsSpace MilitarisationAnti SatelliteMission ShaktiOuter Space TreatySpace DebrisDefence Space AgencyNational Security
Space has become the indispensable backbone of modern security, with satellites enabling navigation, communications, surveillance and missile early warning. As militaries grow dependent on space, it also becomes a domain of competition and potential conflict. The line between using space for defence (militarisation, long under way) and turning it into a battlefield (weaponisation) is thinning. How should India secure its space assets without helping trigger an arms race in orbit?
- A distinction matters: militarisation (using satellites for military support, navigation, reconnaissance, communications) is long-established and lawful; weaponisation (placing weapons in space or building systems to destroy space assets) is the newer, more dangerous frontier.
- The foundational law is the Outer Space Treaty, 1967, which declares space the province of all mankind, bars weapons of mass destruction in orbit, prohibits national appropriation of celestial bodies, and reserves the Moon and other bodies for peaceful purposes. It does not ban conventional weapons or anti-satellite (ASAT) capability outright, leaving a gap.
- Mission Shakti (2019): India tested a direct-ascent anti-satellite (ASAT) missile, destroying one of its own satellites in low Earth orbit, becoming the fourth country (after the United States, Russia and China) to demonstrate ASAT capability. India framed it as a deterrent, not aimed at any country, and conducted it at low altitude to limit lasting debris.
- Space debris is a growing threat: ASAT tests and collisions create clouds of fragments that endanger all satellites, a "tragedy of the commons" in orbit. The Kessler syndrome describes a runaway cascade of collisions.
- India's institutional response includes the Defence Space Agency (DSA) (a tri-services body) and the Defence Space Research Organisation, alongside ISRO's civilian programme and growing private participation through reforms (IN-SPACe and NewSpace India Limited).
For building space defence capability
- Modern forces depend on satellites for navigation, communication and surveillance; the ability to protect these assets and deter attacks on them is a legitimate national-security need.
- Adversaries are developing ASAT and counter-space capabilities; a credible deterrent (as Mission Shakti signalled) discourages an attack on India's space infrastructure.
- A robust space sector also yields civilian and economic dividends and strategic autonomy.
For restraint and arms control
- ASAT tests create long-lived debris that threatens everyone's satellites, including the attacker's; weaponising space risks a race that leaves all parties less secure.
- The Outer Space Treaty's gaps need filling; the world's interest lies in norms and treaties that prevent space from becoming a battlefield, not in unilateral capability-building.
- Conflict in orbit could blind early-warning systems and destabilise nuclear deterrence, raising the risk of catastrophic miscalculation.
India should pursue capable deterrence with active restraint. Build space situational awareness, protect and harden critical satellites, develop counter-space capability for deterrence, and integrate space into joint military planning through the Defence Space Agency, while keeping a clear line against destructive, debris-generating tests. Diplomatically, India should push for stronger international norms, transparency and confidence-building measures, and rules to limit debris and prevent weaponisation, building on the Outer Space Treaty. The goal is a space programme that deters threats to India's assets without accelerating an orbital arms race that would endanger the very domain everyone depends on.
The heavens, the founding treaty says, are the province of all mankind, yet the satellites that guide our missiles and watch our borders have made the sky a contested high ground. India can defend its place above the clouds, but the wiser power is the one that secures its own and works to keep orbit from becoming the next battlefield, lest the debris of victory blind us all.
Thesis to adapt: Space is now central to security, and India must protect its assets and deter threats; but lasting safety lies in capable restraint and stronger international norms, not in a debris-generating race to weaponise orbit.