Aryabhata was the first satellite launched by ISRO, on April 19, 1975.

The INSAT series of satellites are primarily used for communication purposes, providing services such as television broadcasting, telephony, and data transmission.

INSAT-1A was the first ISRO satellite to be launched into geostationary orbit, on April 10, 1982.

The IRS series of satellites are ISRO's Earth observation satellites, used for applications such as land use mapping, crop monitoring, and disaster management.

IRNSS-1A was the first satellite in ISRO's Indian Regional Navigation Satellite System (IRNSS), which provides navigation services to users in the Indian region.

INSAT-3D is ISRO's meteorological satellite, providing services such as weather forecasting, cyclone tracking, and climate monitoring.

Aditya-L1 is ISRO's satellite dedicated to studying the Sun, providing insights into its atmosphere, corona, and solar flares.

The Oceansat series of satellites are ISRO's ocean observation satellites, providing data on sea surface temperature, ocean color, and sea surface height.

Chandrayaan-1 was ISRO's first lunar mission, launched in 2008, which provided valuable data on the lunar surface and composition.

The GSAT series of satellites are ISRO's communication and broadcasting satellites, providing services such as television broadcasting, telephony, and data transmission.

Mangalyaan, also known as the Mars Orbiter Mission, was ISRO's first mission to Mars, launched in 2013, which studied the Martian atmosphere and surface.

The RISAT series of satellites are ISRO's radar imaging satellites, used for applications such as disaster management, environmental monitoring, and agriculture.

NISAR, or NASA-ISRO Synthetic Aperture Radar, is a joint mission between ISRO and NASA to study the Earth's magnetosphere and ionosphere.

The Chandrayaan series of satellites are ISRO's lunar exploration missions, aimed at studying the lunar surface, composition, and environment.