👉 Spermosphere, also known as a spherical mirror or spherical telescope, is a type of optical instrument used to observe distant stars or celestial bodies. It consists of a large mirror or lens that forms an inverted image of the object being observed in front of it. The term "spermosphere" comes from Greek and refers to the act of creating a sphere from a single point without any material support, thus making it a highly specialized optical device. The shape of a spermosphere is
