1. Space technology part -01BY
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2. Introduction to space technology in India
The Indian space research organization (ISRO) is the agency of the government of India headquartered in the city of Bengaluru.
Its vision is to “harness space technology for national development while pursing space research and planetary exploration”.
Formed in 1969, ISRO superseded the erstwhile Indian National Committee for Space Research (INCOSPAR) established in The establishment of ISRO thus institutionalized space activities in India .
It is managed by the Department of Space , which reports to the Prime minister of India.

3. Important organs of ISRO

5. Vikram Sarabhai Space Centre (VSSC), Thiruvananthapuram.
Liquid Propulsion Systems Centre (LPSC), Thiruvananthapuram.
SatishDhawan Space Centre (SDSC-SHAR), Sriharikota.
ISRO Propulsion Complex (IPRC), Mahendragiri.

6. ISRO Satellite Centre (ISAC), Bangalore.
Space Applications Centre (SAC), Ahmedabad.
National Remote Sensing Centre (NRSC), Hyderabad.
ISRO Inertial Systems Unit (IISU), Thiruvananthapuram.
Development and Educational Communication Unit (DECU), Ahmedabad.
Master Control Facility (MCF), Hassan, Karnataka.

7. ISRO Telemetry, Tracking and Command Network (ISTRAC), Bangalore.
Laboratory for Electro-Optics Systems (LEOS), Bangalore.
Indian Institute of Remote Sensing (IIRS), Dehradun.
Antrix Corporation – The marketing arm of ISRO, Bangalore.

8. Physical Research Laboratory (PRL), Ahmedabad.
National Atmospheric Research Laboratory (NARL), Gadanki, Andhra pradesh.
North-Eastern Space Applications Centre[24] (NE-SAC), Umiam.
Semi-Conductor Laboratory (SCL), Mohali.
Indian Institute of Space Science and Technology (IIST), Thiruvananthapuram – India's space university.

9. Vikram Sarabhai Space Centre
Thiruvananthapuram
The largest ISRO base is also the main technical centre and the venue of development of the SLV-3, ASLV, and PSLV series.
The base supports India's Thumba Equatorial Rocket Launching Station and the Rohini Sounding Rocket programme.
This facility is also developing the GSLV series.

10. Liquid Propulsion Systems Centre
Thiruvananthapuram and Bangalore
The LPSC handles design, development, testing and implementation of liquid propulsion control packages, liquid stages and liquid engines for launch vehicles and satellites.
The testing of these systems is largely conducted at IPRC at Mahendragiri.
The LPSC, Bangalore also produces precision transducers.

11. Physical Research Laboratory
Ahmedabad
Solar planetary physics, infrared astronomy, geo-cosmo physics, plasma physics, astrophysics, archaeology, and hydrology are some of the branches of study at this institute. An observatory at Udaipur also falls under the control of this institution.

12. Semi-Conductor Laboratory
Chandigarh
Research & Development in the field of semiconductor technology, micro-electromechanical systems and process technologies relating to semiconductor processing.

13. National Atmospheric Research Laboratory
Tirupati
The NARL carries out fundamental and applied research in Atmospheric and Space Sciences.

14. Space Applications Centre
Ahmedabad
The SAC deals with the various aspects of practical use of space technology. Among the fields of research at the SAC are geodesy, satellite based telecommunications, surveying, remote sensing, meteorology, environment monitoring etc. The SAC additionally operates the Delhi Earth Station, which is located in Delhi and is used for demonstration of various SATCOM experiments in addition to normal SATCOM operations.

15. North-Eastern Space Applications Centre
 Shillong
Providing developmental support to North East by undertaking specific application projects using remote sensing, GIS, satellite communication and conducting space science research.

16. ISRO Propulsion Complex
Mahendragiri
Formerly called LPSC-Mahendragiri, was declared a separate centre. It handles testing and assembly of liquid propulsion control packages, liquid engines and stages for launch vehicles and satellites.

17. ISRO Satellite Centre
Bangalore
The venue of eight successful spacecraft projects is also one of the main satellite technology bases of ISRO. The facility serves as a venue for implementing indigenous spacecraft in India.The satellites Ayrabhata, Bhaskara, APPLE, and IRS-1A were constructed at this site, and the IRS and INSAT satellite series are presently under development here.

18. Laboratory for Electro-Optics Systems
Bangalore
The Unit of ISRO responsible for the development of altitude sensors for all satellites. The high precision optics for all cameras and payloads in all ISRO satellites including Chandrayaan-1 are developed at this laboratory. Located at Peenya Industrial Estate, Bangalore.

19. SatishDhawan Space Centre
Sriharikota
With multiple sub-sites the Sriharikota island facility acts as a launching site for India's satellites.[25] The Sriharikota facility is also the main launch base for India's sounding rockets.[26] The centre is also home to India's largest Solid Propellant Space Booster Plant (SPROB) and houses the Static Test and Evaluation Complex (STEX).[26] The Second Vehicle Assembly Building (SVAB) at Sriharikota is being realised as an additional integration facility, with suitable interfacing to a second launch pad.[28][29]

20. Thumba Equatorial Rocket Launching Station
Thiruvananthapuram
TERLS is used to launch sounding rockets.