2006-06-23 04:16:43 · 15 answers · asked by Susan N 1 in Science & Mathematics ➔ Other - Science
The Triangulum Galaxy (M33), at a bit under 2.6 million light years away, is the most distant object visible to the naked eye. So the eye can see 2.6 million light years.
2006-06-23 04:22:29 · answer #1 · answered by Epidavros 4 · 1⤊ 0⤋
A human can see as far as the eye can see!
2006-06-27 11:19:41 · answer #2 · answered by Anonymous · 0⤊ 0⤋
A human can see an infinite distance. It just depends on the object you are looking at. Example: you can see stars in the sky at night, they are all different distances, but some are brighter, or bigger than others. This will be the biggest factor of how far you can see: Distance, Mass, Brightness.
2006-06-23 11:23:50 · answer #3 · answered by Christopher 4 · 0⤊ 0⤋
As long as the receptors in the eye can detect a photon from the source, then you'll see it. Also, if the source is very dim. looking slightly off to the side of the source lets you see it easier, since looking right at it focuses on the ocular nerve which is less sensitive to light.
2006-06-23 11:34:43 · answer #4 · answered by Donald C 2 · 0⤊ 0⤋
Seeing is a misnomer. As you know, what we actually "see" is light from an object hitting our optic nerve which sends signals to the brain. The brain then interprets those signals as an image.
So as long as light is bouncing off objects and can be picked up by our eyes then we can see it.
2006-06-23 11:26:49 · answer #5 · answered by asterisk_dot_asterisk 3 · 0⤊ 0⤋
The unaided eye can see astronomical objects that are millions of light-years away. A "light-year" is the distance that light travels in a year, and believe me, honey, that's a long way.
2006-06-23 11:22:33 · answer #6 · answered by ? 6 · 0⤊ 0⤋
The Andromeda galaxy is 2 million light years away and be easily seen on a dark, clear night.
2006-06-23 11:26:24 · answer #7 · answered by Anonymous · 0⤊ 0⤋
Many many light years away...that's why we see stars. It just depends how big something is. Stars are big and bright so we can see them at astronomical distances. Technically we can see infinitely far away
2006-06-23 11:21:06 · answer #8 · answered by the_bendude 3 · 0⤊ 0⤋
To the edge of the universe. Well, as far as light can travel.
2006-06-23 11:21:24 · answer #9 · answered by hunky 2 · 0⤊ 0⤋
the average distance you can see is 71 miles through the atmosphere on a clear day at sea level (not including stars etc)
2006-06-23 11:21:14 · answer #10 · answered by CRAZYDEADMOTH 3 · 0⤊ 0⤋