Rank 23 documents Aryabhata — India's first satellite and the payload that announced ISRO's arrival as a spacefaring nation. Launched 19 April 1975 aboard Kosmos-3M from Kapustin Yar in the Soviet Union, U. R. Rao's team delivered a 360-kilogramne 26-sided polyhedron carrying X-ray astronomy instruments into a 563 × 619 kilometre orbit. Named for the fifth-century mathematician Aryabhata, the faceted bus became the visual signature of India's space programme — saffron-white-green geometric bands echoing the national flag on a spacecraft that proved Indian engineers could design, build, and operate orbital hardware even when launch capacity still depended on foreign rockets. Four days of active life before a power failure ended operations, but the mission's symbolism endured: India had joined the community of satellite-building nations. Wallimilist renders the 26-sided polyhedron hero, saffron-white-green tricolor banding, Kapustin Yar pad silhouette, tricolor-slab cream archive with ARYABHATA slab title, FIRST SATELLITE BUILT BY INDIA kicker, and INDIA'S SPACE PROGRAM DEBUT footer exactly as the master PNG dictates — ISRO logo, Aryabhata 1975 mission emblem, specimen data bands, and curator copy on Indian space heritage.