Changes

:::::::And Scott, you won't find any references for observed stars 39 billion light years away because no such thing exists. The universe is estimated to have a total diameter of 78 billion light years, so people have at times incorrectly surmised that we can see half of that distance away, 39 billion light years. In reality, the observable universe is approximately 13 billion light years in radius, which corresponds nicely with modern cosmology, which says that the universe is 13.7 billion years old and was opaque to radiation (i.e. light) until about 300,000 years after the Big Bang. [[User:RachelW|RachelW]] 20:54, 30 January 2012 (EST)

:::::::And Scott, you won't find any references for observed stars 39 billion light years away because no such thing exists. The universe is estimated to have a total diameter of 78 billion light years, so people have at times incorrectly surmised that we can see half of that distance away, 39 billion light years. In reality, the observable universe is approximately 13 billion light years in radius, which corresponds nicely with modern cosmology, which says that the universe is 13.7 billion years old and was opaque to radiation (i.e. light) until about 300,000 years after the Big Bang. [[User:RachelW|RachelW]] 20:54, 30 January 2012 (EST)

::::::::None of this answers a simple question -- was an object at 39 billion lightyears at a closer range 2 billion lightyears ago in an expanding universe?  [[User:RobSmith|Rob Smith]] 20:58, 30 January 2012 (EST)

::::::::None of this answers a simple question -- was an object at 39 billion lightyears at a closer range 2 billion lightyears ago in an expanding universe?  [[User:RobSmith|Rob Smith]] 20:58, 30 January 2012 (EST)