Scientific objectives of the Hot Universe Baryon Surveyor (HUBS) mission

The Hot Universe Baryon Surveyor (HUBS) is a proposed space-based X-ray telescope for detecting emissions from the hot gas content in our universe. With its unprecedented spatially-resolved high-resolution spectroscopy and large field of view, HUBS mission will be uniquely qualified to measure physical chemical properties interstellar medium, circumgalactic intergalactic intracluster medium. These measurements valuable two key scientific goals HUBS, namely unravel AGN stellar feedback physics that governs formation evolution galaxies, probe baryon budget multi-phase states galactic cosmological scales. In addition these goals, also help us solve some problems fields galaxy clusters, AGNs, diffuse backgrounds, supernova remnants, compact objects. This paper discusses perspective advancing using telescope.