what is the most distant object you can seee with the naked eye?

Answer 1

The Andromeda Galaxy. Distance 2.5 - 2.9 million lightyears away

Answer 2

The answer would depend upon two things (three if you include the size of your eye),
-The size of the object
-The time the light has been traveling to you

Obviously, if you stick something 1 mm tall out 1000 miles, you will not be able to see it...but if you stick something 1 light year tall out 1000 miles, it will take up the entire sky.
It is the angular size that matters, and this depends upon the object's distance and height.

The minimum angle, theta, between the "top" and "bottom" of the object you are trying to observe through a circular aperture (you eye) is given as,
Theta= 1.22 * Lambda / D
where lambda is the wavelength of the light used in the observation and D is the diameter of the circular aperture.
If the actual angle is smaller than the minimum angle your eye will allow, you cannot (by the laws of physics, due to the interference pattern generated) resolve the image. Then take into account all the other factors which will weaken the image...poor eye sight, dimly lit,.....

Also, we can only see things if light travels from the object and hits our eye. Light travels at a finite speed and thus takes time to cross the universe. There may very well be something much larger and much farther away from Earth than we could ever see (presently) but we don’t know it is there until the light arrives.

Answer 3

If you are asking the most distant object that can be seen clearly with the naked eye (I mean clearly, i.e. it should not appear hazy), then it depends on many factors like the focusing power of your lens, the distance of the retina from the lens (people suffering from myopia, which have the power of their lens as negative have this distance somewhat more than the normal distance and they cannot see clearly beyond a point without their glasses). People with normal near and far points of clear visibility can see clearly upto a very large distance (very close to infinity). But if you are just asking how far can be seen (it maybe clearly or hazily), then it's something you can't imagine. Everyone (everyone who's not blind, I mean), can see upto infinity (you may not notice it, because things at such large distances, no matter how big, will form very small images on the retina, it may be less than the size of an atom, or maybe less than that, so it's negligible). So everyone who's not blind can see things, even at infinity.

Answer 4

The short answer to this question would indeed be M33, a spiral galaxy near the constellation Triangulum. It's magnitude is 5.7. To see this galaxy with the naked eye, you would need fairly good vision and very dark skies. Even under the most ideal conditions this would be challenenging.

You are far more likely to be able to see M31, the Andromeda Galaxy, under dark skies.

However, a super nova exploding in a fairly close galaxy my usurp this for a short time.

Answer 5

Actually, it seems that with the right visibility conditions, the Trianglum Galaxy (M33) is the most distant object visible with the naked eye for most people. It's 3 million light years away, "slightly" farther away (in relative terms) than the Andromeda galaxy that others mentioned. Of course the Andromeda galaxy is a lot easier to spot due to its greater size and brightness. See this article for more information...

Answer 6

My guess would have to be the stars because the stars are further out than any planet and the moon that we can see without a telescope (well our sun would be closer to earth than some of the planets but that's beside the point.)

Answer 7

Definitely the galaxy Andromeda, also known as M31. The only galaxy besides our own to be visible with the naked eye. It's about 2.9 million light years away.

2.9 million light years = 17,000,000,000,000,000,000 miles (1.7 × 10^19 miles)

Answer 8

The Andromeda Galaxy (M31). Distance is about 2.5-million light years. Stick around for a few million years more though and it'll be closer. Our galaxy and Andromeda are moving towards each other at about 186 miles per second.

Answer 9

well the answer to this would be infinity, as light from stars take yrs to reach earth and then u can see them . So if the light reflected from the surface of that particular thing is able to hit ur eyes , u will be able to see it no matter what the distance

Answer 10

Stars.