Uranus, the most distant naked-eye object in the Solar System, that has seen by visible to the naked to human eye anyway visible to the naked eye, but it was not discovered in ancient times. So what's going on with this solar system planet?.

Discovery by Telescope: Uranus was not officially recognized as a planet until 1781 when astronomer William Herschel observed it through a telescope. Herschel initially thought it was a comet, but after further observation, it became clear that it was a new planet. This was the first planet discovered with a telescope, marking the shift in how we observe the cosmos.

Uranus is an example of how astronomical discoveries can be overlooked despite being theoretically visible for centuries, largely due to human perception, observational limitations, and the planet's peculiar characteristics. In astronomy, the naked eye may be used to observe celestial events and objects visible without equipment, such as conjunctions, passing comets, meteor showers, and the brightest asteroids., Sky lore and various tests demonstrate an impressive variety of phenomena visible to the unaided eye.