ISRO

ISRO — the Indian Space Research Organisation — is India's national space agency, and one of the largest builders of robotic systems on the subcontinent. Every Indian spacecraft is, by definition, a robot: a machine that senses, decides, and acts without anyone on board.

A frugal giant

ISRO was founded in 1969, the same year humans landed on the Moon. Its founding director, Vikram Sarabhai, argued that a poor country like India couldn't afford to skip space — it needed satellites for agriculture, weather, fishing, and communication, and depending on other countries' satellites was risky.

Sixty years later, ISRO operates on a budget about one-tenth the size of NASA's — and still pulls off missions that no other agency can match for cost. The 2013 Mars Orbiter Mission (Mangalyaan) cost ₹450 crore (~$74 million). The Hollywood movie Gravity, released the same week, cost more.

The robots ISRO has built

Pragyan rover (Chandrayaan-3, 2023) — A small six-wheeled rover that landed near the Moon's south pole on August 23, 2023. India became the fourth country ever to soft-land on the Moon, and the first to land near the south pole. Pragyan rolled around for 10 lunar days, ran experiments on the soil, and went to sleep when the long lunar night came.

Mars Orbiter (Mangalyaan, 2014-2022) — An autonomous spacecraft that reached Mars on its first attempt, a feat no other country has matched. It captured stunning images of Mars's poles and the planet's full disk.

OSPREY arm (2025+) — A robotic arm being developed to grab tumbling objects in orbit — debris, defunct satellites, and one day, payloads being passed between spacecraft. This is the foundation of in-orbit servicing and refueling.

INSAT and IRNSS satellites — Geostationary weather and navigation satellites, each one a sophisticated robot operating thousands of kilometres above Earth, with sensors, decision-making electronics, and thrusters to keep itself in orbit.

RLV-TD (Reusable Launch Vehicle Technology Demonstrator) — An autonomous winged vehicle, like a small Space Shuttle, that ISRO has been landing back on Earth in tests since 2016. The 2023 landing test was fully autonomous: no remote control, no human in the loop.

Why ISRO matters for Indian robotics

For decades, "robotics" in India largely meant industrial arms imported from Japan or Germany, used in factories. ISRO built a parallel ecosystem of engineers who could design control systems, navigation algorithms, mechatronics, and sensor packages from scratch — for the most demanding environment on Earth: space.

A lot of those engineers, and a lot of that knowledge, now flows into India's young terrestrial robotics startups — companies building agricultural robots, surgical robots, defence drones, and warehouse automation. ISRO is the unspoken backbone of Indian robotics.

What's next

Chandrayaan-4 (lunar sample return). Gaganyaan (India's first crewed spaceflight, with both human astronauts and a robotic torso called Vyommitra). The Bharatiya Antariksh Station (India's planned space station, with robotic docking arms). And a steady push toward fully reusable launch vehicles.

Curious how a robot finds its way somewhere it's never been? Read SLAM — the same problem ISRO solves on the Moon, just without GPS.