ISRO Missions List – Static GK & General Awareness for Competitive Exams with Memory Tricks

Introduction

The Indian Space Research Organisation (ISRO) is India's national space agency, officially established on 15 August 1969 under the visionary leadership of Dr. Vikram Sarabhai, who is often regarded as the Father of the Indian Space Programme. India's space journey actually began earlier, in 1963, with the launch of a sounding rocket from the Thumba Equatorial Rocket Launching Station (TERLS) in Kerala, where a converted church and a coconut tree shed served as the first rocket workshop. From these humble beginnings, ISRO has grown into one of the world's most efficient and cost-effective space agencies, with missions spanning Earth observation, navigation, astronomy, solar science, lunar and planetary exploration, and human spaceflight.

Questions on ISRO missions appear regularly in UPSC Prelims, SSC CGL, IBPS PO, RRB NTPC, SBI Clerk, State PCS, and various Insurance and Defence exams, often as part of Science and Technology and Current Affairs. Typical questions ask about the launch year of a mission, the launch vehicle used, the orbit or destination, "firsts" achieved by India, and the names of landers and rovers. This article brings together every important ISRO mission in a structured, exam-ready format. To stay updated with the latest space-related news, you can refer to the Daily Current Affairs section on thejobsme.com.

ISRO missions are also closely linked to ongoing current affairs themes such as the Chandrayaan-3 South Pole landing, the declaration of National Space Day, the Aditya-L1 solar observatory reaching the L1 point, the NISAR launch, India's first astronaut on the International Space Station via Axiom-4, and upcoming projects like Gaganyaan and the Bharatiya Antariksh Station, making this topic doubly important for aspirants preparing for both Prelims and Mains.

Core Concepts: Understanding ISRO and Its Missions

ISRO's work is organised around different categories of satellites, launch vehicles, and exploration missions. Understanding these categories helps students remember individual missions and answer related questions confidently.

Categories of ISRO Missions and Satellites

• Communication Satellites: The INSAT and GSAT series provide telecommunication, television broadcasting, and meteorology services from geostationary orbit.
• Earth Observation / Remote Sensing Satellites: The IRS, Cartosat, RISAT, and EOS series provide imagery for agriculture, water resources, urban planning, and disaster management.
• Navigation Satellites: The IRNSS constellation, branded as NavIC, provides India's independent positioning and timing services.
• Scientific and Exploration Missions: Chandrayaan (lunar), Mangalyaan (Mars), Aditya-L1 (Sun), AstroSat and XPoSat (astronomy) explore space and the solar system.
• Experimental and Small Satellites: Aryabhata, Rohini, APPLE, and the INS/IMS series demonstrate new technologies.
• Launch Vehicles: India evolved through SLV, ASLV, PSLV, GSLV, and LVM3 (GSLV Mk III), and is now adding SSLV and private rockets.
• Human Spaceflight Missions: The Gaganyaan programme aims to send Indian astronauts to low Earth orbit using indigenous technology.

ISRO by the Numbers

• Established: 15 August 1969 under Dr. Vikram Sarabhai.
• Total Spacecraft Missions: 133 (including 3 Nano and 1 Micro Satellite).
• Launch Missions: 104, with the 100th launch achieved in January 2025.
• Foreign Satellites Launched: 434, from over 34 countries including the USA, UK, and Singapore.
• Re-entry Missions and POEMs: 9.
• Human Spaceflight Missions: 1 (Gaganyaan programme).
• Budget Growth: from approximately ₹5,615 crore (2013-14) to ₹13,416 crore (2025-26), with 328+ space startups and 100% FDI allowed in selected activities.

Major ISRO Missions - Launch Details and Achievements

The following table lists the most exam-relevant ISRO missions along with their launch year, launch vehicle, and key details. For more on Science and Technology topics, you can explore the Static GK section on thejobsme.com.

Early Satellites and Launch Vehicles

Earth Observation, Communication, and Navigation Satellites

Lunar, Planetary, and Astronomy Missions

Record-Setting and Milestone Missions

Upcoming and Planned ISRO Missions

Memory Tricks and Mnemonics

Trick 1: Launch Vehicle Evolution — "SAPGL"

Remember the evolution of India's launch vehicles in order using "SAPGL":

• S → SLV (Satellite Launch Vehicle, 1980, launched Rohini).
• A → ASLV (Augmented Satellite Launch Vehicle).
• P → PSLV (Polar Satellite Launch Vehicle, the workhorse).
• G → GSLV (Geosynchronous Satellite Launch Vehicle).
• L → LVM3 (GSLV Mk III, the heaviest).

"Small to Large — SLV grows into LVM3."

Trick 2: The Three Chandrayaans — "OOL"

Remember what each Chandrayaan carried using "OOL":

• Chandrayaan-1 (2008) → Orbiter only; discovered water on the Moon.
• Chandrayaan-2 (2019) → Orbiter + Vikram Lander + Pragyan Rover; lander crashed, orbiter works.
• Chandrayaan-3 (2023) → No orbiter; Lander + Rover + propulsion module; successful South Pole soft landing.

"One orbits, Two adds a rover, Three lands."

Trick 3: India's Space "Firsts"

The most commonly asked "first" missions:

• First satellite → Aryabhata (1975).
• First indigenous launch → Rohini via SLV-3 (1980).
• First lunar mission → Chandrayaan-1 (2008).
• First interplanetary mission → Mangalyaan / MOM (2013).
• First astronomy satellite → AstroSat (2015).
• First solar mission → Aditya-L1 (2023).
• First X-ray polarimetry mission → XPoSat (2024).
• First docking in space → SpaDeX (2025).

Trick 4: Lagrange Point — "Aditya at L1"

Remember that Aditya-L1 sits at the Sun-Earth Lagrange Point 1 (L1), about 1.5 million km from Earth. The "L1" is right there in the name. "Aditya means Sun, L1 means the spot — Aditya-L1 watches the Sun without interruption."

Trick 5: Landers and Rovers — "Vikram and Pragyan"

• Vikram (the lander) is named after Dr. Vikram Sarabhai, the father of India's space programme.
• Pragyan (the rover) means "wisdom" in Sanskrit.

"Vikram lands, Pragyan roves."

Trick 6: The "4th Country / 4th Agency" Pattern

India became the 4th in several space achievements:

• 4th country to reach the Moon (Chandrayaan-1).
• 4th space agency to reach Mars (Mangalyaan, after USSR, NASA, ESA).
• 4th country to soft-land on the Moon (Chandrayaan-3).
• 4th country to dock in space (SpaDeX, after Russia, USA, China).

"Moon, Mars, Soft-landing, Docking — India is the Fourth in all four."

Trick 7: Cheapest and Record Missions

• Cheapest Mars mission → Mangalyaan ($74 million / ₹450 crore).
• 104 satellites in one go → PSLV-C37 (2017 world record).
• World's first dual-band SAR → NISAR (L-band + S-band).

Additional Notes

Frequently Confused Facts

• Chandrayaan-1 vs Chandrayaan-3: Chandrayaan-1 (2008) discovered water on the Moon but was an orbiter only; Chandrayaan-3 (2023) achieved the first soft landing near the South Pole. Do not mix the achievements.
• Chandrayaan-2 vs Chandrayaan-3: Chandrayaan-2 had an orbiter, lander, and rover (lander crashed); Chandrayaan-3 had NO orbiter — only a propulsion module, lander, and rover, and it landed successfully.
• Launch year vs Mars-orbit year of Mangalyaan: Mangalyaan was launched on 5 November 2013 but reached Mars orbit on 24 September 2014. Exams often test the orbit-insertion year.
• Aditya-L1 launch vs arrival: Launched on 2 September 2023 but reached the L1 point only in January 2024.
• AstroSat vs XPoSat: AstroSat (2015) is a multi-wavelength observatory; XPoSat (2024) is dedicated to X-ray polarimetry only.
• PSLV vs GSLV vs LVM3: PSLV is the reliable workhorse for polar/lighter payloads; GSLV and LVM3 (GSLV Mk III) carry heavier payloads to geostationary orbit. Chandrayaan-1 used PSLV, while Chandrayaan-2 and 3 used LVM3.
• NavIC vs GPS: NavIC is India's own regional system covering India and up to 1,500 km around it; GPS is the US global system.
• NISAR vs RISAT: NISAR (2025) is a NASA-ISRO joint mission and the world's first dual-band (L+S) SAR; RISAT-1 (2012) was India's first single-band (C-band) radar imaging satellite.
• Vikram Sarabhai vs Vikram lander: Dr. Vikram Sarabhai is the father of India's space programme; the Vikram lander on Chandrayaan-2 and 3 is named after him.
• GSAT-7 (Rukmini): A communication satellite built for the Indian Navy, not a navigation satellite.

Repeating PYQ Patterns

Certain ISRO missions are asked repeatedly in competitive exams. Aryabhata (1975, first satellite), Chandrayaan-1 (water on Moon), Mangalyaan (first-attempt Mars success, cheapest Mars mission), Chandrayaan-3 (South Pole landing, National Space Day), Aditya-L1 (L1 point solar mission), PSLV-C37 (104 satellites), and NavIC appear most often in UPSC Prelims, SSC CGL, and RRB NTPC papers. Banking exams (IBPS PO, SBI Clerk) frequently focus on launch years, launch vehicles, and recent missions like NISAR and Axiom-4 in their Current Affairs and General Awareness sections. State PCS and Defence exams add details such as the launch vehicle used and the names of landers and rovers. To revise space-related current affairs, you can attempt the Daily Current Affairs Quiz on thejobsme.com.

Quick Insight

ISRO missions are more than scientific milestones — they reflect India's growing strategic and technological strength. The Chandrayaan-3 landing near the lunar South Pole on 23 August 2023, now marked as National Space Day, placed India among the world's leading space powers, while Aditya-L1 and NISAR demonstrate India's ability to undertake complex solar and Earth-observation science. With the Gaganyaan human spaceflight programme, the planned Bharatiya Antariksh Station, and a fast-growing private space sector with over 328 startups, ISRO remains one of the most important topics in current affairs for aspirants. For more Static GK and science topics, refer to the Static GK notes and stay updated with the Latest Government Job Notifications on thejobsme.com.

One-Liners for Quick Revision

• ISRO → Indian Space Research Organisation → established 15 August 1969 under Dr. Vikram Sarabhai.
• TERLS → Thumba Equatorial Rocket Launching Station, Kerala → site of India's first sounding rocket launch in 1963.
• Aryabhata → India's first satellite (1975) → launched by USSR's Kosmos-3M rocket.
• SLV-3 / Rohini → India's first indigenous launch (1980) → led by Dr. APJ Abdul Kalam's team.
• APPLE → first indigenous experimental communication satellite (1981) → in GTO.
• IRS-1A → first indigenous remote sensing satellite (1988).
• INSAT-1B → first successful INSAT (1983); INSAT-2A → first ISRO-built multipurpose satellite (1992).
• EDUSAT → India's first dedicated education satellite (2004).
• Oceansat (IRS-P4) → India's first ocean observation satellite (1999).
• RISAT-1 → India's first radar imaging satellite (2012) → C-band SAR, all-weather imaging.
• Chandrayaan-1 → India's first lunar mission (2008, PSLV-C11) → discovered water on the Moon.
• Mangalyaan (MOM) → first interplanetary mission (2013, PSLV-C25) → Mars orbit in first attempt (2014), cheapest Mars mission.
• GSAT-7 (Rukmini) → communication satellite for the Indian Navy (2013).
• AstroSat → India's first multi-wavelength space observatory (2015, PSLV-C30).
• PSLV-C37 → world record of 104 satellites in one launch (2017).
• GSAT-6A → S-band communication satellite (2018) → contact lost after launch.
• NavIC / IRNSS → India's navigation system (operational 2018) → seven satellites, began with IRNSS-1A (2013).
• GSAT-11 → India's heaviest satellite built (2018, 3,423 kg).
• Chandrayaan-2 → orbiter + Vikram lander + Pragyan rover (2019, LVM3) → lander crashed, orbiter works.
• Chandrayaan-3 → first soft landing near lunar South Pole (23 August 2023, LVM3) → National Space Day; no orbiter.
• Aditya-L1 → India's first solar mission (2023, PSLV-C57) → at Sun-Earth L1, 1.5 million km away.
• XPoSat → India's first X-ray polarimetry mission (2024, PSLV-C58) → world's second after NASA's IXPE.
• SpaDeX → India's first space docking (2025) → 4th country after Russia, USA, China.
• Axiom-4 (Ax-4) → India's first astronaut on the ISS (2025) → Shubhanshu Shukla, 18 days.
• NISAR → NASA-ISRO joint Earth observation mission (2025) → world's first dual-band (L+S) SAR.
• Gaganyaan → India's human spaceflight programme → three astronauts to low Earth orbit, by ISRO and HAL.
• Chandrayaan-4 → planned lunar sample return mission (~2027-28) → two LVM3 launches.
• Venus Orbiter Mission (Shukrayaan) → India's second interplanetary mission (planned 2028).
• LUPEX / Chandrayaan-5 → joint ISRO-JAXA lunar polar mission (2028-29).
• Bharatiya Antariksh Station → India's proposed space station (2028-2035) → about 20 tonnes at 400 km altitude.
• ISRO record → 133 spacecraft missions, 104 launch missions, 434 foreign satellites launched.

For more Static GK topics like Indian launch vehicles, scientific discoveries, and important days, explore the Static GK Quiz on thejobsme.com. You can also strengthen your General Awareness with the Daily Current Affairs notes and check out the latest exam updates at Latest Government Job Notifications.