🚀 ISRO GK

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🟢 1. Basic Information

• Full Form: Indian Space Research Organisation
• Established: 15 August 1969
• Founder: Dr. Vikram Sarabhai
• Headquarters: Bengaluru, Karnataka
• Parent Department: Department of Space (Government of India)
• Spaceport: Satish Dhawan Space Centre (Sriharikota, Andhra Pradesh)
• Motto Idea: Space technology for national development

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🟣 2. ISRO Centres (Full List)

🚀 Major Centres

• VSSC (Thiruvananthapuram) – Rockets & launch vehicles
• URSC (Bengaluru) – Satellites design
• SAC (Ahmedabad) – Communication & imaging
• NRSC (Hyderabad) – Remote sensing data
• IPRC (Mahendragiri) – Engine testing
• HSFC (Bengaluru) – Human Spaceflight (Gaganyaan)
• LPSC (Kerala & Bengaluru) – Propulsion systems
• SDSC SHAR (Sriharikota) – Launch site

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🔵 3. ISRO Launch Vehicles (Complete)

🚀 First Generation

• RH-75 – First experimental rocket
• SLV-3 – First satellite launch vehicle (1980 success)

🚀 Second Generation

• ASLV – Improved payload capacity

🚀 Operational Rockets

• PSLV – Most reliable “Workhorse of ISRO”
• GSLV Mk II – Medium lift
• LVM3 (GSLV Mk III) – Most powerful rocket
• SSLV – Small satellite launcher

🚀 Advanced / Future Tech

• Reusable Launch Vehicle (RLV-TD)
• Scramjet Engine (air-breathing propulsion)
• Semi-cryogenic engine (under development)

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🌙 4. Moon Missions (Chandrayaan Series)

• Chandrayaan-1 (2008)
  • Discovered water molecules on Moon
• Chandrayaan-2 (2019)
  • Orbiter successful
  • Lander crash (Vikram)
• Chandrayaan-3 (2023)
  • Successful soft landing near Moon South Pole
  • India became 4th country to land on Moon

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🔴 5. Mars Mission

• Mangalyaan / Mars Orbiter Mission (2013)
  • India reached Mars orbit in first attempt
  • Most cost-effective Mars mission in history
  • India became first Asian nation to reach Mars orbit

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☀️ 6. Sun & Deep Space Missions

• Aditya-L1 (2023) – Solar observation mission
• Astrosat (2015) – India’s first space telescope

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🛰️ 7. Satellite Systems (Complete Classification)

📡 Communication Satellites

• INSAT series
• GSAT series
• South Asia Satellite (GSAT-9)

🌍 Earth Observation Satellites

• IRS series
• Cartosat series (mapping & imaging)
• Resourcesat series
• Oceansat series (oceans & climate)
• RISAT series (radar imaging)

🧭 Navigation System

• NavIC (IRNSS system)
• India’s regional GPS alternative

🔬 Scientific Satellites

• Astrosat
• Chandrayaan orbiters
• Experimental payload satellites

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👨‍🚀 8. Human Space Programme

• Project Name: Gaganyaan
• Objective: Send Indian astronauts to space
• Astronaut Name: Vyomanauts
• Module Types:
  • Crew Module
  • Service Module
• Training Partners: India + Russia + other agencies
• Managed by: HSFC (Human Space Flight Centre)

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🧪 9. Advanced Technologies (VERY IMPORTANT)

• Cryogenic engines (CE-20, C-25)
• Semi-cryogenic engines (SC120 project)
• Reusable Launch Vehicle (RLV-TD)
• Scramjet engine (hypersonic speed tech)
• Space docking experiments (SPADEX type missions)
• Small Satellite Launch Technology (SSLV)
• Electric propulsion systems (advanced satellites)

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🏆 10. Major Achievements of ISRO

• Aryabhata – First Indian satellite (1975)
• SLV-3 – First successful launch vehicle
• PSLV – World’s most reliable launch vehicle
• Chandrayaan-3 – Successful Moon south pole landing
• Mangalyaan – First Mars mission in first attempt
• Low-cost space exploration leader globally
• Multiple satellites in one launch record
• Strong international commercial launch services

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📡 11. Types of ISRO Missions

• Communication missions
• Earth observation missions
• Navigation missions
• Interplanetary missions
• Human spaceflight missions
• Scientific research missions
• Technology demonstration missions

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🧠 12. Important Firsts (Very Important for Exams)

• First satellite: Aryabhata
• First rocket: RH-75
• First launch vehicle: SLV-3
• First Moon mission: Chandrayaan-1
• First Mars mission: Mangalyaan
• First soft lunar landing: Chandrayaan-3
• First solar mission: Aditya-L1

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🌍 13. Importance of ISRO

• Weather forecasting
• Disaster management
• Communication networks
• Navigation systems (NavIC)
• Agriculture monitoring
• National security support
• Scientific research advancement

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