Rank 34 documents Astrosat — India's first dedicated multi-wavelength astronomy satellite, launched 28 September 2015 aboard PSLV-XL from Sriharikota. The 1,513-kilogramne bus carries five instrument payloads spanning ultraviolet, optical, and X-ray bands — enabling simultaneous observations of active galactic nuclei, binary star systems, and transient cosmic events that single-wavelength missions cannot correlate. Astrosat extended India's space science portfolio beyond Earth observation and planetary probes into fundamental astrophysics, producing peer-reviewed results on star formation, galaxy evolution, and high-energy cosmic sources. Wallimilist renders the long bus with cylindrical telescope tube and blue solar panels, spiral galaxy in indigo star field, PSLV pad tower background, ledger-frame cream layout with ASTROSAT slab title, FIRST DEDICATED INDIAN ASTRONOMY SATELLITE kicker, and MULTI-WAVELENGTH SKY SURVEY FROM ORBIT footer exactly as the master PNG dictates — ISRO and PSLV emblems, specimen data bands, and curator copy on Indian astronomy heritage.