Recent content by Frank3

I know very little about Dark Matter, but my limited reading on it seems to tell me that it (or something else) is needed to explain observed gravitational interactions in and between galaxies, and mostly distant galaxies. I don't recall seeing anything to suggest that there is a similar need...

oldunion and others - One of the best books I've read of late on the issues regarding the early universe, and on the thinking and people doing the thinking about it, is Alan Guth's "The Inlfatinary Universe" (1997). Dr. Guth, one of (and in some ways THE) individuals who put forth the...

HallsofIvy - OK, that's my understanding (that elapsed timeis not absolute) and one of the points of my question. So when we hear estimates that the universe is 13.8 billion years old, for example, should this include "as measured from our Earth frame of reference"? Any thoughts on my...

Age of the universe -- absolute or relative? I have a question. Consider twin physicists Al and Bert who devise a new method (far better than measuring cosmic microwave background) to determine the age of the universe. They do so to an extraordinarily high degree of precision – stating it...