What is Chandrayaan-3? India's historic Moon landing, explained
By the WhyCosmos team · Last updated:
Chandrayaan-3 is ISRO's third Moon mission. On 23 August 2023, its Vikram lander touched down near the Moon's south pole — something no country had ever done — and released a small rover named Pragyan. India became only the fourth country to soft-land on the Moon, and the date is now celebrated every year as National Space Day.
“Chandrayaan” means Moon craft in Sanskrit. The mission's landing site has been named Shiv Shakti Point, and the anniversary of the landing — 23 August — is now National Space Day across India.
How to explain it to your child
Explain it to an 8-year-old
Chandrayaan-3 is the Indian spaceship that landed on the Moon. It carried a little robot car called Pragyan that rolled out and explored a part of the Moon nobody had ever visited. When it landed, people all over India cheered like their team had won the World Cup — because it had.
Explain it to a 13-year-old
Chandrayaan-3 was ISRO's second attempt at a lunar soft landing after Chandrayaan-2's lander crashed in 2019. Launched on 14 July 2023 on the LVM3 rocket, the Vikram lander touched down near the lunar south pole on 23 August 2023 — a region scientists care about because its shadowed craters may hold water ice. The Pragyan rover then studied the surface for one lunar day.
Key facts
| Agency | ISRO (Indian Space Research Organisation) |
|---|---|
| Launched | 14 July 2023, on the LVM3 rocket from Sriharikota |
| Landed | 23 August 2023, 6:04 PM IST |
| Landing site | Near the Moon's south pole — named Shiv Shakti Point |
| Lander and rover | Vikram (lander) and Pragyan (rover) |
| World first | First-ever landing near the lunar south pole |
| India became | The 4th country to soft-land on the Moon (after the USSR, USA and China) |
| Approximate cost | Around ₹615 crore — famously less than many big-budget films |
| Mission life | One lunar day (about 14 Earth days) |
Why land at the Moon's south pole?
The south pole is the Moon's most tantalising address. Some of its craters are permanently shadowed — sunlight has not touched their floors for billions of years — and scientists believe they hold water ice. Water matters because future Moon bases could drink it, breathe oxygen split from it, and even turn it into rocket fuel. Landing there is hard: the light is low, the terrain is rough, and no one had managed it before Vikram did.
What did Chandrayaan-3 discover?
- Pragyan's LIBS instrument confirmed sulphur in the soil near the south pole — the first on-site measurement of its kind there — along with elements like aluminium, iron and titanium.
- Vikram's probe measured how temperature changes just below the lunar surface, finding the top soil behaves like a strong insulator.
- The mission proved ISRO could pull off one of spaceflight's hardest manoeuvres — a precise, autonomous soft landing — on a modest budget.
How to watch its legacy with your child
Every 23 August, India celebrates National Space Day in schools, planetariums and ISRO centres. It is the single easiest annual moment to turn a child's flicker of interest in space into something that lasts — the same reason WhyCosmos starts new course batches in late August.
Questions parents and kids ask
Chandrayaan-3 is the Indian Moon mission that landed a spacecraft called Vikram near the Moon's south pole on 23 August 2023, and sent out a small rover called Pragyan to study the surface. No country had landed there before.
Chandrayaan-2's lander lost control in the final braking phase in 2019. ISRO redesigned the approach for Chandrayaan-3 — stronger legs, more fuel margin, better sensors and software that could handle bigger errors — and the 2023 landing was smooth.
They were designed for one lunar day (about 14 Earth days) and completed their work in September 2023. They did not wake up after the long, extremely cold lunar night — which was expected, not a failure.
Vikram honours Dr Vikram Sarabhai, the father of India’s space programme. Pragyan is Sanskrit for wisdom.
Because that is the date Chandrayaan-3 landed in 2023. The Government of India declared it National Space Day, first celebrated in 2024, and it is now marked every year in schools across the country.
Your child asks questions like this every week.WhyCosmos runs live online astronomy classes for ages 8–16, taught by real astrophysicists — where questions like these are the curriculum.
Related terms in this glossary
Sources and further reading