ISRO’s Journey: From Chandrayaan-3’s Moon Landing to Aditya-L1 and Gaganyaan
On National Space Day, a look back at how India landed near the Moon’s south pole, sent an observatory to watch the Sun, and is preparing to fly its own astronauts with Gaganyaan.
On the evening of 23 August 2023, my family sat in front of the TV like it was the last over of a World Cup final. The Vikram lander was descending towards the Moon, and the whole country was holding its breath. When the ISRO control room burst into applause, so did we. That evening, India became the fourth country to soft-land on the Moon — and the first to land near its south pole.
Today, 23 August, is celebrated as National Space Day in memory of that landing. It is a good moment to look back at how far ISRO has come and what lies ahead.
🌙 Chandrayaan-3: Landing Where No One Had Landed
Chandrayaan-3 was launched on 14 July 2023 on ISRO’s heavy-lift LVM3 rocket from Sriharikota. It carried the Vikram lander and the Pragyan rover. After a careful journey of more than a month, Vikram touched down safely near the lunar south pole.
The landing site was named “Shiv Shakti” point. Pragyan rolled out and studied the lunar soil, and its instruments confirmed the presence of sulphur near the south pole, along with elements like aluminium, calcium, iron and oxygen. Vikram even did a small “hop” experiment, lifting off and landing again a short distance away.
What made this success special was the story behind it. Chandrayaan-2’s lander had crashed in 2019. ISRO studied every failure, made the lander tougher and smarter, and came back four years later. That is a lesson for all of us, not just scientists.
“Failure was not the end of the mission — it was the first draft of success.”
☀️ Aditya-L1: India’s Observatory Watching the Sun
Just days after the Moon landing, ISRO launched Aditya-L1 on 2 September 2023 aboard a PSLV rocket. It is India’s first space-based mission to study the Sun.
Aditya-L1 travelled about 1.5 million kilometres from Earth to a special spot called Lagrange point 1 (L1), where the gravity of the Sun and Earth balance in a way that lets a spacecraft keep a steady position between the two. It was placed in a halo orbit around L1 on 6 January 2024.
From there, it can watch the Sun continuously, without being blocked by the Earth. Its seven instruments study the Sun’s outer layers, solar flares and the solar wind — things that affect satellites, GPS and power grids on Earth.
👨🚀 Gaganyaan: India’s Human Spaceflight Dream
Gaganyaan is ISRO’s programme to send Indian astronauts — called gaganyatris — into low Earth orbit on an Indian rocket from Indian soil.
In February 2024, the four astronaut-designates were announced: Group Captain Prasanth Balakrishnan Nair, Group Captain Ajit Krishnan, Group Captain Angad Pratap and Group Captain (then Wing Commander) Shubhanshu Shukla.
In June–July 2025, Shubhanshu Shukla flew to the International Space Station on the Axiom-4 mission, becoming the first Indian to visit the ISS and only the second Indian in space after Rakesh Sharma in 1984. The experience he gained feeds directly into Gaganyaan.
Where things stand
Human spaceflight leaves no room for shortcuts, and ISRO has moved carefully. Before any astronaut flies, it will fly uncrewed test missions. The first, Gaganyaan-1 (G1), will carry Vyommitra, a half-humanoid robot designed to test life-support and other systems. As of August 2026, ISRO’s chairman has said G1 is expected to fly in the last quarter of 2026, and the first crewed flight is targeted for 2027. Dates in space programmes can shift, so it is best to follow official ISRO updates.
🛰️ More Milestones Worth Knowing
- Mangalyaan (2013–14): India reached Mars orbit on its first attempt.
- SpaDeX (January 2025): ISRO docked two satellites in orbit, making India the fourth country to achieve space docking — an important skill for future space stations.
- Everyday benefits: ISRO satellites help with weather and cyclone forecasting, fishermen’s alerts, navigation (NavIC), TV and disaster management.
💡 What ISRO Teaches Us
- Frugal doesn’t mean cheap quality. ISRO is known for doing ambitious missions on tight budgets through smart engineering.
- Learn from failure. Chandrayaan-2’s crash led directly to Chandrayaan-3’s success.
- Teamwork wins. Thousands of engineers, technicians and scientists — including many from small towns and government schools — make each mission possible.
- Inspire the next generation. Show children launch videos, visit a planetarium, and encourage their “why” questions — like I wrote in why is the sky blue.
✨ Takeaway
From the Moon’s south pole to a quiet point 1.5 million km away watching the Sun, India’s space programme has given us many proud moments. The next big chapter — Indians flying to space on an Indian rocket — is getting closer. On this National Space Day, let us celebrate the scientists, and keep the curiosity alive in our homes.
Sources: ISRO mission pages; news reports quoting ISRO Chairman V. Narayanan on Gaganyaan timelines (2026).
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