In recent years, solar-induced chlorophyll fluorescence (SIF) has shown great potential for monitoring terrestrial photosynthesis, but existing SIF products retrieved from atmospheric sensors typically feature coarse spatial resolutions from several to hundreds of kilometers. Recently, the Chinese Terrestrial Ecosystem Carbon Inventory Satellite, Goumang, launched in August 2022, carries a unique SIF Imaging Spectrometer (SIFIS), the first spaceborne sensor specifically designed for global SIF retrieval. SIFIS provides a substantially improved spatial resolution (along track: 370 m; across track: 800 m) and high spectral resolution (0.24 nm, 664–786 nm), representing an important advance in SIF remote sensing capabilities and enabling accurate SIF retrieval using a data-driven approach. SIFIS SIF showed excellent spatial and temporal agreement with airborne AisaIBIS data and independent datasets (TROPOMI SIF, OCO-2 SIF, SMAP GPP). This new SIF product opens new avenues for studying fine-scale photosynthesis from space.