silhouette of mountain terrain against backdrop of a planet curved horizon and star-speckled space. the planet's atmosphere

silhouette terrain planet horizon stars space atmosphere blue glow edge rugged landscape celestial night cosmos curve sky dark rock mountain interstellar view scene astronomy shadow outline contrast universe galactic infinity extraterrestrial orbit exoplanet exploration scifi geology vast mysterious void nature panoramic extragalactic astrological elevation interplanetary light serenity 3d