Habitable Worlds Observatory (HWO) is an infrared, optical, and ultraviolet space telescope concept that would be optimized to search for and image Earth-size habitable exoplanets in the habitable zones of their stars, where liquid water can exist, by using a coronagraph to block out the light of their stars, as well as providing broad astrophysics observations.^[1] It builds upon studies conducted for two earlier mission concepts called the Large Ultraviolet Optical Infrared Surveyor (LUVOIR) and Habitable Exoplanets Observatory (HabEx). The mission’s main objective would be to identify and directly image at least 25 potentially habitable worlds. It would then use spectroscopy to search for chemical "biosignatures" in these planets’ atmospheres, including gasses such as oxygen and methane which could serve as critical evidence for life. HWO would also use its high sensitivity and resolution capabilities to trace the evolution of galaxies and other cosmic structures.^[2]