1963
First sounding rocket launched from TERLS (November 21, 1963).

1965
Space Science & Technology Centre (SSTC) established in Thumba.

1967
Satellite Telecommunication Earth Station set up at Ahmedabad.

1968
TERLS dedicated to the United Nations (February 2, 1968).

1969
Indian  Space  Research  Organisation  (ISRO) formed under  Department  of  Atomic  Energy (August 15, 1969).

1972
Space Commission and Department of Space set up. ISRO brought under DOS 
(June 1, 1972).

1972-76
Air-borne remote sensing experiments.

1975
ISRO becomes Government Organisation (April 1, 1975).

First Indian Satellite, Aryabhata, launched (April 19, 1975).

1975-76
Satellite Instructional Television Experiment (SITE) conducted.

1977
Satellite Telecommunication Experiments Project (STEP) carried out.

1979
Bhaskara-I, an experimental satellite for earth observations, launched (June 7, 1979).

First  Experimental  launch of SLV-3 with Rohini Technology Payload on board (August  10, 1979). Satellite could not be placed in orbit

1980
Second  Experimental launch of SLV-3. Rohini satellite successfully placed in orbit. 
(July 18,1980).

1981
First developmental launch of SLV-3. RS-D1 placed in orbit (May 31, 1981)

APPLE,  an  experimental geo-stationary communication satellite successfully launched (June 19, 1981).

Bhaskara-II launched (November 20, 1981).

1982
INSAT-1A launched (April 10, 1982). Deactivated on September 6, 1982.

1983
Second developmental launch of SLV-3. RS-D2 placed in orbit (April 17, 1983).

INSAT-1B, launched (August 30, 1983).

1984
Indo-Soviet manned space mission (April 1984).

1987
First developmental launch of ASLV with SROSS-1 satellite on board (March 24, 1987). Satellite could not be placed in orbit.

1988
Launch of first operational Indian Remote Sensing Satellite, IRS-1A (March 17, 1988).

INSAT-1C launched (July 21, 1988). Abandoned in November 1989.

Second  developmental  launch  of  ASLV with SROSS-2 on board  (July  13,  1988). Satellite could not be placed in orbit.

1990
INSAT-1D launched (June 12, 1990).

1991
Launch of second operational Remote Sensing satellite, IRS-1B (August 29, 1991).

1992
Third  developmental  launch  of  ASLV with SROSS-C on  board  (May  20,  1992). Satellite placed in orbit.

INSAT-2A,   the  first  satellite  of  the indigenously-built  second-generation INSAT series, launched (July 10, 1992).

1993
INSAT-2B, the second satellite in the INSAT-2 series, launched (July 23, 1993).

First  developmental  launch of PSLV with IRS-1E on board (September  20,  1993). Satellite could not be placed in orbit.

1994
Fourth  developmental  launch  of ASLV with SROSS-C2 on board  (May  4,  1994). Satellite placed in orbit.

Second  developmental  launch of PSLV with IRS-P2 on board (October  15,  1994). Satellite successfully placed in polar sunsynchronous orbit.

1995
INSAT-2C, the third satellite in the INSAT-2 series, launched (December 7, 1995)

Launch of third operational Indian Remote Sensing Satellite, IRS-1C (December 28, 1995).

1996
Third  developmental  launch  of  PSLV with IRS-P3 on  board  (March  21,  1996). Satellite placed in polar sunsynchronous orbit.

1997
INSAT-2D, fourth satellite in the INSAT series, launched (June 4, 1997). Becomes inoperable on October  4, 1997. (An in-orbit satellite, ARABSAT-1C, since renamed INSAT-2DT,  was acquired in November 1997 to partly augment the INSAT system).

First operational launch of PSLV with IRS-1D on board (September 29, 1997). Satellite placed in orbit.

1998
INSAT system capacity augmented with the readiness of INSAT-2DT acquired from ARABSAT (January 1998)

1999
INSAT-2E, the last satellite in the multipurpose INSAT-2 series, launched by Ariane from Kourou French Guyana (April 3, 1999).

Indian Remote Sensing Satellite, IRS-P4 (OCEANSAT), launched by Polar Satellite Launch Vehicle (PSLV-C2) along with Korean KITSAT-3 and German DLR-TUBSAT from Sriharikota
(May 26, 1999).

2000
INSAT-3B, the first satellite in the third generation INSAT-3 series, launched by Ariane from Kourou French Guyana (March 22, 2000).

2001
Successful flight test of Geosynchronous Satellite Launch Vehicle (GSLV), (April 18, 2001) with an experimental satellite GSAT-1 on board.

Successful launch of PSLV-C3 (October 22, 2001) placing three satellites India’s TES, Belgian PROBA and German BIRD, in to Polar sunsynchronous orbit.

2002
Successful launch of INSAT-3C by Ariane from Kourou, French Guyana (January 24, 2002).