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Talk:Starlight problem (view source)
Revision as of 03:34, January 31, 2012
, 03:34, January 31, 2012→39 billion light years away?: making progress
::::Ok. So that has nothing to do with atomic weight of hydrogen, does it? And we don't have to revisit that issue again, please. [[User:RobSmith|Rob Smith]] 22:25, 30 January 2012 (EST)
::::Ok. So that has nothing to do with atomic weight of hydrogen, does it? And we don't have to revisit that issue again, please. [[User:RobSmith|Rob Smith]] 22:25, 30 January 2012 (EST)
:::::No, it doesn't. I used atomic numbers (not atomic weights - they're different) as an example of how some things are constant, because you said that everything is constantly changing. The fact is that many things are NOT constantly changing, and one of them is the speed of light. We know that it ''isn't'' changing because various measurements have been done, and we know that it ''can't'' change because of conservation of energy and E=mc<sup>2</sup>. --[[User:GeorgeLi|GeorgeLi]] 22:31, 30 January 2012 (EST)
:::::No, it doesn't. I used atomic numbers (not atomic weights - they're different) as an example of how some things are constant, because you said that everything is constantly changing. The fact is that many things are NOT constantly changing, and one of them is the speed of light. We know that it ''isn't'' changing because various measurements have been done, and we know that it ''can't'' change because of conservation of energy and E=mc<sup>2</sup>. --[[User:GeorgeLi|GeorgeLi]] 22:31, 30 January 2012 (EST)
::::::Good. We're clarifying much here. When it is postulated, "the universe is expanding", that ''only'' refers to space, not matter, am I reading that correct? [[User:RobSmith|Rob Smith]] 22:34, 30 January 2012 (EST)
::::::::::Rachel, Aschalfly says that he saw "numerous references" to people talking about observable stars 39 billion light years away. I have an open mind, and want to be able to have him share his knowledge with me. [[User:ScottDG|ScottDG]] [[User talk:ScottDG|Talk]] <b>Is Gingrich an orphan? Conservapedia says yes. Why does nobody else? </b> 21:02, 30 January 2012 (EST)
::::::::::Rachel, Aschalfly says that he saw "numerous references" to people talking about observable stars 39 billion light years away. I have an open mind, and want to be able to have him share his knowledge with me. [[User:ScottDG|ScottDG]] [[User talk:ScottDG|Talk]] <b>Is Gingrich an orphan? Conservapedia says yes. Why does nobody else? </b> 21:02, 30 January 2012 (EST)
:::::::::::There most certainly are stars 39 billion light years away, or close to it. That's the cosmological principle in action. But, as Aschlafly pointed out, they're not going to be observable because light from those stars has not had time to get to us, and if we attempted to look back that far, we will eventually hit the "wall," so to speak, as a result of the opacity of the early universe. [[User:RachelW|RachelW]] 21:10, 30 January 2012 (EST)
:::::::::::There most certainly are stars 39 billion light years away, or close to it. That's the cosmological principle in action. But, as Aschlafly pointed out, they're not going to be observable because light from those stars has not had time to get to us, and if we attempted to look back that far, we will eventually hit the "wall," so to speak, as a result of the opacity of the early universe. [[User:RachelW|RachelW]] 21:10, 30 January 2012 (EST)