|MadSci Network: Astronomy|
How far away is the 'edge of the universe'? (see below) When I read of scientists discovering galaxies "on the edge of the universe", perhaps 15 billion light years away, I wonder if they are including the distance the object must have traveled in the time it took for the light to reach their telescopes. Very distant objects are said to be receding from any other point in space at a higher rate than closer objects. If a galaxy is discovered 15 billion light years away today, the light left that galaxy 15 billion years ago while receding at a high rate. Where is it today, really? Twice as far away?
Re:How far away is the 'edge of the universe'? (see below)
Try the links in the MadSci Library for more information on Astronomy. MadSci Home