The term 'SPHERES IN THE HEAVENS' can be summarized by the word 'ORBS', which is a four-letter word. ORBS are round, spherical objects that are often seen in the night sky. They are typically associated with planets, stars, and other celestial bodies. In some cultures, they are believed to have spiritual significance. In astronomy, ORBS are used to describe the shape of galaxies, nebulae, and other large structures in space.