Most remote object visible by the naked eye

In exceptionally clear conditions far from manmade light pollution, a human eye adjusted to the dark can see objects classified as faint as magnitude 6 in the sky. Under these conditions, at magnitude 5.7 the Triangulum Galaxy can be spotted by a keen-eyed observer. It is a galaxy roughly half the size of the Milky Way Galaxy, located about 3 million light years from Earth.

Under most viewing conditions, the most distant object visible is the Andromeda Galaxy, with a magnitude of 3.44, which is about 2.5 million light years distant. Andromeda and Triangulum are roughly 15 degrees apart in the sky, and both are heading towards the Milky Way over time.