● Historic · Lunar · Aug 23, 2023

CHANDRAYAAN-3

The mission that made history twice — India became the first nation to land on the Moon's south pole, and the fourth nation ever to achieve a soft lunar landing. Vikram touched down. Pragyan rolled out. The world watched.

Watch: Chandrayaan-3 Soft Landing — Live

1st

Nation · Moon South Pole

4th

Nation · Soft Lunar Landing

100m+

Pragyan Rover Distance

Days Active on Moon

₹615Cr

Total Mission Cost

Overview

India Lands on the Moon's South Pole

Chandrayaan-3 is ISRO's third lunar mission and India's most celebrated space achievement to date. Where Chandrayaan-2's Vikram lander crash-landed in 2019, Chandrayaan-3 succeeded perfectly — demonstrating end-to-end capability in safe landing and roving on the lunar surface.

On August 23, 2023, at 6:04 PM IST, the Vikram lander touched down at 69.37°S latitude near the Moon's south pole — a region no nation had ever reached before. The Pragyan rover rolled out shortly after, spending 14 Earth days exploring the lunar surface, collecting data, and making discoveries that stunned the global scientific community.

The mission cost ₹615 crore — less than many Bollywood blockbusters, and a fraction of what any other nation would have spent on a comparable mission.

Why the South Pole?
The lunar south pole is scientifically invaluable — permanently shadowed craters may contain water ice billions of years old. Understanding this region is critical for future human lunar bases and long-duration missions. India got there first.

Launch Date

Jul 14, 2023

Landing Date

Aug 23, 2023

Landing Site

69.37°S · South Pole

Launch Vehicle

LVM3-M4

Lander Mass

1,726

Rover Mass

Propulsion Module

2,148

Lander Module

1,752

Lander Dry Mass

626

kg (no fuel)

Mission Cost

₹615 Crore

Active Duration

Lunar Days

The Moment

August 23, 2023 — 6:04 PM IST

The landing sequence began with Vikram firing its engines for the "rough braking phase" — slowing from 1.68 km/s to near zero over 11.5 minutes. This was the 17 minutes of terror that ISRO engineers had spent years preparing for.

At an altitude of 800 metres, Vikram switched to its fine braking phase, orienting itself vertically. Four throttleable engines guided it down with precision. At 150 metres, it hovered, scanned the surface for hazards using its Lander Hazard Detection and Avoidance Camera, then completed the final descent.

Touchdown. India had landed on the Moon's south pole — the first nation in history to do so. Prime Minister Modi, watching from South Africa, declared August 23 as National Space Day.

Within hours, the ramp deployed and Pragyan — a 6-wheeled rover carrying APXS and LIBS instruments — rolled onto the lunar surface for the first time.

The 17 Minutes of Terror
The powered descent phase — from 30 km altitude to surface — was fully autonomous. No signal from Earth could reach the spacecraft in time to correct any error. Vikram's onboard computers made every decision. It executed flawlessly.

National Space Day — Aug 23
The Government of India declared August 23 as National Space Day — to be observed every year as a celebration of India's scientific achievement and to inspire the next generation of space explorers.

Spacecraft

Vikram & Pragyan

Vikram Lander — named after ISRO founder Vikram Sarabhai. Four throttleable engines. Hazard detection cameras. Five instruments: ChaSTE (temperature), RAMBHA-LP (plasma), ILSA (seismometer), and NASA's Laser Retroreflector Array (LRA) — a passive instrument with no moving parts that will remain functional on the Moon for decades, allowing scientists on Earth to fire lasers at it and measure the precise Earth-Moon distance to millimetre accuracy.

Pragyan Rover — named after the Sanskrit word for wisdom. Six wheels. Solar powered. APXS (Alpha Particle X-ray Spectrometer) and LIBS (Laser-Induced Breakdown Spectroscope) instruments for elemental analysis of the lunar soil.

Vikram Engines

Throttleable

Rover Wheels

Rover Power

Solar

Lander Instruments

Rover Instruments

APXS + LIBS

Distance Covered

100

metres+

What India Found

Discoveries That Changed Lunar Science

🔬

Sulfur Confirmed on the Lunar South Pole

Pragyan's LIBS instrument detected sulfur in the lunar soil near the south pole for the first time. This was unexpected and significant — sulfur's presence changes our understanding of lunar geology and the Moon's volcanic history.

🌡️

Temperature Gradient Surprise

ChaSTE measured a stunning 70°C temperature difference between the surface and just 80mm below it — far steeper than expected. The surface hit ~50°C while the subsurface stayed at –10°C. This data is critical for designing future lunar habitats.

🌑

Ancient Terrain — 3.7 Billion Years Old

Analysis confirmed the Chandrayaan-3 landing site is approximately 3.7 billion years old — among the most ancient lunar terrain ever studied up close. A window into the early Solar System.

💧

Evidence Supporting Water Ice Zones

RAMBHA-LP measured the plasma environment near the south pole, providing data consistent with the presence of permanently shadowed regions that could harbour water ice — the key resource for future human lunar exploration.

📳

Moonquakes Detected

ILSA — the first seismometer on the Moon since Apollo — detected natural seismic activity. A moonquake of unknown origin was recorded, revealing the Moon is geologically more active than previously assumed.

⚗️

Aluminium, Iron, Calcium, and More

APXS and LIBS together confirmed the presence of aluminium, iron, calcium, chromium, titanium, manganese, silicon, and oxygen in the south pole regolith — a comprehensive elemental map no mission had produced at this location before.

Mission Photos

In Pictures

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Mission Timeline

From Launch to Discovery

Jul 14, 2023

Launch — LVM3-M4, Sriharikota

Chandrayaan-3 lifts off from SDSC SHAR at 2:35 PM IST. Perfect insertion into Earth parking orbit.

Jul–Aug 2023

Earth Orbit Manoeuvres + Trans-Lunar Injection

Multiple orbit-raising manoeuvres bring the spacecraft to the required velocity for trans-lunar injection. The spacecraft breaks free of Earth's gravity and begins its journey to the Moon.

Aug 5, 2023

Lunar Orbit Insertion

Chandrayaan-3 successfully enters lunar orbit. Orbit lowering manoeuvres begin to bring it closer to the surface over the following weeks.

Aug 17, 2023

Lander Module Separation

Vikram lander separates from the propulsion module at 100 km × 100 km lunar orbit. The two modules part ways — propulsion module remains in orbit, Vikram begins its descent sequence.

Aug 23, 2023 · 6:04 PM

Vikram Lands — History Made

Vikram touches down at 69.37°S — Moon's south pole. India becomes the first nation to reach this region. 1.3 billion people watch. The world watches. India cheers.

Aug 24, 2023

Pragyan Rolls Out

The ramp deploys. Pragyan rolls onto the lunar surface and begins its traverse. LIBS fires its first laser shots at the regolith. Sulfur detected immediately.

Aug 24–Sep 2, 2023

14 Days of Science

Pragyan covers 100+ metres, analyses soil composition, detects moonquakes, measures temperatures, and maps the plasma environment. Every day brings a new discovery.

Sep 2, 2023

Sleep Mode — Awaiting Sunrise

Vikram and Pragyan enter sleep mode as the 14-day lunar night begins. ISRO attempts revival at the next lunar sunrise — neither responds. ISRO officially classifies them as in a permanent sleep state, not destroyed — the electronics were simply not designed with Radioisotope Heater Units (RHUs) to survive the −200°C lunar night. Their data lives on forever.

Why It Matters

India's Greatest Space Achievement

🌍

First Nation to the Moon's South Pole

Russia's Luna-25 tried the same landing zone weeks earlier and crashed. India succeeded. The south pole is the most scientifically valuable region of the Moon — and India owns that milestone.

💡

Inspiration for a Generation

August 23 is now National Space Day. Millions of Indian children watched the landing live. The scientists who built Chandrayaan-3 — including many women — became national heroes overnight.

🔭

Scientific Legacy

The data from Pragyan and Vikram will be studied for decades. ISRO released the datasets publicly — any scientist in the world can analyse Chandrayaan-3's discoveries.

🚀

Foundation for Chandrayaan-4

Chandrayaan-3 proved India can land on the Moon with precision. Chandrayaan-4 will build on this — returning samples from the very terrain Pragyan explored. The journey continues.

Hidden Successes

Three Things the World Missed

🌍

SHAPE — Studying Earth as an Exoplanet

The Propulsion Module carried a payload most people don't know about — SHAPE (Spectro-polarimetry of Habitable Planet Earth). Still orbiting the Moon, SHAPE studies Earth's reflected light as if it were a distant exoplanet — helping scientists develop techniques to identify habitable planets around other stars. A bonus mission hidden inside Chandrayaan-3.

🔄

Propulsion Module Returns to Earth Orbit

In late 2023, in an unplanned but brilliant manoeuvre, ISRO brought the Propulsion Module back from lunar orbit to Earth orbit — demonstrating the orbital mechanics needed for future sample-return missions. Chandrayaan-4, which will return lunar samples to Earth, is built on what ISRO learned from this return journey. A quiet proof of concept that spoke loudly.

🦘

The Hop — Vikram Lifts Off from the Moon

After the primary mission, Vikram performed a "hop experiment" — firing its engines to lift off from the lunar surface, travelling 30–40 cm horizontally before landing again safely. This proved ISRO can restart engines on the lunar surface — a critical capability for future missions that need to take off from the Moon. India's lander hopped on the Moon. That's extraordinary.

📡

IDSN — The Ears That Made It Possible

Every command sent to Chandrayaan-3 and every byte of data it returned passed through the Indian Deep Space Network (IDSN) at Byalalu, Karnataka — 18-metre and 32-metre dish antennas that track spacecraft across hundreds of thousands of kilometres. Without IDSN, none of this science reaches Earth. The mission's unsung hero.