ISRO's journey: from Aryabhata to its 101st mission

The brief

Context

The story is a retrospective of the Indian Space Research Organisation (ISRO), founded in 1969 on the vision of Vikram Sarabhai, tracing its growth from carrying rocket parts on bicycles to completing its 101st launch. It lists the landmarks that shaped Indian spaceflight: the first satellite Aryabhata (1975), the first indigenous orbital launch (Rohini, 1980), the PSLV and GSLV/LVM3 launch vehicles, the Chandrayaan and Mangalyaan planetary missions, the 104-satellite world record and the solar mission Aditya L1. The peg is the December 24 launch of Bluebird Block 2 on an LVM3, described as ISRO's 101st mission and a step towards direct satellite-to-smartphone connectivity.

Key facts

• ISRO was founded in 1969; the story marks its 101st launch, dated December 24 (published December 24, 2025).
• Aryabhata, India's first satellite, was launched in 1975 with the cooperation of the Soviet Union.
• Rohini (1980) was the first satellite placed in orbit from Indian soil (Sriharikota) by an indigenous rocket, the SLV-3.
• PSLV is called ISRO's 'workhorse'; the source says it has flown over a hundred launches without knowing failure.
• GSLV/LVM3, nicknamed the 'Bahubali' rocket, carries heavy satellites of over 4 tonnes and was key to Chandrayaan-3.
• Chandrayaan-1 (2008) entered lunar orbit on the first attempt and detected traces of water on the Moon.
• Chandrayaan-3 was launched on July 14, 2023; the Vikram lander touched down on the Moon's south pole on August 23.
• PSLV-C37 set a record in 2017 by launching 104 satellites at once, of which 96 belonged to the United States.

Timeline

1. 1969ISRO is founded, growing out of Vikram Sarabhai's vision.
2. 1975Aryabhata, India's first satellite, is launched with Soviet Union cooperation.
3. 1980Rohini is placed in orbit from Sriharikota by the indigenous SLV-3 rocket.
4. 2008Chandrayaan-1 reaches lunar orbit on the first attempt and finds traces of water on the Moon.
5. 2013Mangalyaan (Mars Orbiter Mission) enters Mars orbit on the first attempt at a cost lower than a Hollywood film budget.
6. 2017PSLV-C37 launches 104 satellites in a single flight, 96 of them American.
7. July 14, 2023Chandrayaan-3 is launched towards the Moon.
8. August 23, 2023The Vikram lander touches down on the lunar south pole.
9. December 24 (2025)LVM3 launches Bluebird Block 2, ISRO's 101st mission, advancing satellite-to-smartphone connectivity.

Who has a stake

• ISRO — Its credibility as a 'space power house' rests on a record of over a hundred successful launches and on delivering future missions.
• Vikram Sarabhai and ISRO's scientists — The source credits Sarabhai's vision and scientists' sustained dedication for ISRO reaching this level.
• India as a nation — Prestige from being, per the source, the first country to land at the Moon's south pole and from reaching Mars on the first attempt.
• Foreign/commercial satellite customers — PSLV's reliability and the 2017 launch of 96 American satellites show India's role as a launch service provider.
• Smartphone and telecom users — The Bluebird Block 2 launch aims to bring satellite connectivity directly to smartphones.
• Future Indian astronauts (Gaganyaan) — ISRO is preparing the Gaganyaan mission to carry Indians into space on its own.

Why it matters

ISRO's arc from a Soviet-assisted first satellite in 1975 to an indigenous heavy-lift launcher placing a commercial satellite-to-smartphone payload in orbit shows how India moved from dependence to self-reliance in space. The same capability now underpins scientific firsts such as the lunar south pole landing and commercial launches for foreign customers. For readers, the 101st mission is a marker of how space technology has shifted from prestige projects to everyday connectivity and services.