"Originally posted by FreeThinker Some of you put your credibility on the line by saying that the Sun is n't shrinking . I did some research in this area , and came up with some interesting results. . ."
"Which are based on old information . The SOHO project ( with which I was indirectly involved , and know some of the participants ) was launched on December 2 , 1995 specifically to make high precision measurements of the sun , especially the oscillations of the size of the surface , which indicate details of the interior . To quote them : Is the Sun expanding or contracting , and at what rate ? ( For an overview of the controversy over solar diameter variations , I recommend John Gribbin 's pre-SOHO book , Blinded By the Light : The Secret Life of the Sun , published in 1991 ) The Sun is not currently expanding or contracting to any measurable extent . It may in fact be shrinking or swelling , but we have no hard data with which to conclude that . It is vibrating , however : http : //helios.tuc.noao.edu/helio.html ( Global Oscillation Network Group ) http : //soi.stanford.edu ( The Solar Oscillations Investigation ) In addition , we expect that the Sun will someday expand into a red giant phase , but that wo n't be for another 4 billion to 5 billion years or so . SOHO FAQ So , have you worked out the length of a day would have been 1 billion years ago ?"
"put your credibility on the line by saying that the Sun is n't shrinking"
"we expect that the Sun will someday expand into a red giant phase"