AstroLab
Mars on the horizon of Phobos
A vast world, lit from the side
Stand at 75° north on Phobos: Mars rises above the horizon with sunlight from the side. The view starts paused so you can explore.
Why explore it?
Proximity makes Mars enormous: its disc spans about 42° of the sky. The spherical ground and Phobos’s orbital phase are illustrative; this framing is not a photographic reconstruction of an actual site.