Internet2 mins ago
astonomy
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when I look up into the night sky, what is the most distant object I can see with the naked eye?
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Its all down to magnitudes of stars or galaxies. The human eye can see anything of magnitude 6 or less. As a guide a full moon is minus 12 so easily visible. The Andromeda Galaxy has a magnitude of 4.5 so it is visible and is faint but there will be fainter objects visible. Pluto has a magnitude of 7.8 so is just out of view but the furthest i can find is 61 Cyg B with a magnitude of 6.03 might be just visible with good eyesight. Thats a mere 11.1 million light years away.