The moon is about 0.0000000406 light years away from earth.
Clearly, the moon is MUCH too close (238,000 or 239,000 miles or so) for the distance to be rendered meaningfully in light years.
The furthest object we have observed, is a destructing star (GRB 090423) at 13.1 billion light years away.
This answer is only partially correct because humans can only see that distance with improvements on their eyes. For example a telescope. But humans originally can only see 2,300,000 to 12,000,000 light years into space with perfect vision & nothing to enhance their sight.
Not even close to a million light years away, at least the ones we can see. All the stars we see in the sky are in our own galaxy, the Milky Way, which is 100,000 light years across. Most of the stars that are visible to the naked eye are less than 1,000 light years away. Sirius, the brightest star in the night sky is 8.6 light years away. There are stars millions to billions of miles away in other galaxies, but we cannot see them at such a great distance. Even with telescopes it is difficult to make out individual stars.
8 billion light years means that the light has taken 8 billion years to reach you. That's how far into the past you are seeing.
ESO 510-G13 is a spiral galaxy approximately 150 million light-years away in the constellation Hydra See:- http://en.wikipedia.org/wiki/File:Warped_galaxy.jpg
That depends on how far away the star is. If the exploding star is 1,000 light years away we would see the supernova 1,000 years later. If it is 2,000 light years away we would see it 2,000 years later.
From 3000 light years away, with a big enough telescope, you would be able to see the Sun. As a very dim star.
It takes that long for the light depicting the event, to get here. If a star is 1,000 light-years away, that means it will take 1,000 years for the light depicting the event to get here. In other words, we see it as it was 1,000 years ago. Light dosent travel to us that quickly and it's so far away that the light takes so many years or so to arrive here for us to see.
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It varies widely, the closest star other than the sun is just over 4 light years away, but most of the stars we see are a few dozen to a few hundred light years away.
8 billion light years means that the light has taken 8 billion years to reach you. That's how far into the past you are seeing.
ESO 510-G13 is a spiral galaxy approximately 150 million light-years away in the constellation Hydra See:- http://en.wikipedia.org/wiki/File:Warped_galaxy.jpg
Like the human eye which can see distant constellations a tekescope can see objects many light years away!
The light from the stars travels billions of years. Most of the stars we see are already gone, but the light from them us still traveling.
That depends on how far away the star is. If the exploding star is 1,000 light years away we would see the supernova 1,000 years later. If it is 2,000 light years away we would see it 2,000 years later.
You will see it in 425 years time
From 3000 light years away, with a big enough telescope, you would be able to see the Sun. As a very dim star.
If you mean, with the naked eye: anywhere between 4 light-years, and thousands of light-years; however, there are three galaxies you can see with the naked eye, two of which are about 180,000 light-years away, while the Andromeda Galaxy is 2-3 million light-years away. With powerful telescopes, on the other hand, stars and galaxies can be seen that are millions, and even billions, of light-years away.
It takes that long for the light depicting the event, to get here. If a star is 1,000 light-years away, that means it will take 1,000 years for the light depicting the event to get here. In other words, we see it as it was 1,000 years ago. Light dosent travel to us that quickly and it's so far away that the light takes so many years or so to arrive here for us to see.
Most observed stars and galaxies lie many many light years away from Earth. As a result, say for a star that is 5 light years away from Earth, the light we see coming from that star today or tonight was actually emitted 5 years ago from that star. Now imagine a star thousands of light years away, the light that we observe took thousands of years to travel to Earth and therefore carry an image thousands of year old.