👉 The term "outseen" in the context of astronomy refers to an object that is not visible or seen by any other celestial body. In other words, it is invisible to the naked eye and therefore cannot be detected by telescopes or other instruments for which such a detection requires the use of binoculars or other specialized equipment. Outseens are often used in astronomy to refer to celestial objects that do not have visible features, such as stars, planets, or galaxies.
