2007-08-26 02:26:54 · 7 answers · asked by Troy H 1 in Science & Mathematics ➔ Biology
A little over a million light years. The furthest thing observable with the naked eye in a sufficiently dark place is the Andromeda Galaxy.
2007-08-26 02:37:52 · answer #1 · answered by Jim E 4 · 1⤊ 1⤋
Technically, the human eye can not see any distance at all. What is "seen" is the light that enters the eye either directly from or reflected from an object. In order for something to be visible, there must be a certain number of photons that come into the eye. I don't have the answer as to how many before they become visible.
2007-08-26 10:10:30 · answer #2 · answered by Joan H 6 · 0⤊ 1⤋
the answer is unlimited, the real question is what is the source of light that you are looking at. If you were at sea you can see until the curve of the earth starts. You can see mountains for miles, the sun is 8 min away at the speed of light and starts are thousand years away but you can still see them. You can even see a single candle on a clear night up yo 4 miles away....
2007-08-26 09:36:36 · answer #3 · answered by theevilfez 4 · 2⤊ 1⤋
A man under certain conditions can see the flick of a burning candle 40 miles away from sea with his bare eyes.
2007-08-26 09:38:49 · answer #4 · answered by physics maniac 2 · 1⤊ 1⤋
It depends on the size of the object.
Stars are millions of miles away, but you can see them because they are huge suns and very bright.
To check for perspective, look at a period at the end of a sentence and see how far you can see it.
Not far, but with 20/20 sight, you might be able to see it as far away as 10 feet!
2007-08-26 09:38:41 · answer #5 · answered by Anonymous · 0⤊ 1⤋
Its my understanding that at sea level you can see about 25 miles.It varies,sea mist, fog,rain,waves ect.
2007-08-26 09:36:14 · answer #6 · answered by thresher 7 · 0⤊ 1⤋
well, i can see to the moon and back. how far is that?
2007-08-26 09:36:01 · answer #7 · answered by Anonymous · 0⤊ 1⤋