Dr. Vikram Sarabhai, considered the father of the Indian space programme, founded ISRO in 1969.
India's first human spaceflight project, Gaganyaan, is set to launch in 2023.
It is one of only six space agencies in the world capable of launching satellites and spacecraft from its own country.
ISRO has also launched three moon missions and one Mars mission.
ISRO stands for Indian Space Research Organisation.
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