Is it about
winning now, Thai? In a scientific discussion, only the one with the truth is a winner. So now, I'm trying to help you win.
I understand and acknowledge your objections to the article. First off, it would seem that this is indeed something that is not entirely answered by the modern scientific community. There are various explanations throughout the literature that I have seen, for example that there is a Sirius C companion that affects Sirius A's stellar fusion, that a clump of matter plunged into Sirius A and changed its fusion, atmospheric interference, mistranslation, poetic license, etc.
So for now, let us assume that indeed, Sirius was actually red 2,000 years ago.
Let's say you win!
So what?
I'm quoting this from a letter from a Christian to a creationist at
http://www.csharp.com/kennedy.html ...
You implied that our knowledge of stellar evolution is so bad that the white dwarf companion of Sirius was a red giant less than 2000 years ago. If that had been the case, the red giant would have been nearly as bright as the moon, there would have been a spectacular display of the ejected gas when the white dwarf threw off its outer layers, which would still be visible today. None of this has been observed, and the white dwarf, though hot by our standards, is much too cool to have been produced only about 2000 years ago, unless you assume that all the laws of physics are wrong, but then concerning Io above, you used the laws of physics as part of your apologetics.
If we are completely wrong about stellar evolution, and if Seneca really did see Sirius B as a red giant 2,000 years ago, what will the impact on astrophysics be? Most likely the problem with rapidity requires a change to our understanding of gravity and nuclear fusion, the former arising from GR and the latter from quantum physics. Fine, so we'll have a new GR and a new quantum physics. How do you know for sure that within those GR and quantum physics, the age of the universe will actually be 6,000 years, instead of say 100,000 years or 20 trillion years or something like?
This demonstrates a problem with scientific creationism: the problem of criticism without creativity. Essentially, the creationists don't know good conflict resolution: you only have the right to criticise an idea if you can come up with a better alternative. This kind of proof, that "the scientists are wrong! therefore we are right!" simply doesn't cut it. Just because the scientists are wrong, doesn't guarantee that you creationists are right. If you knock down the Big Bang, it may be that the theory which takes its place is not 6,000 year old young earth creationism, but perhaps steady-state plasma cosmology.
Besides, as pointed out, many creationist proofs depend tacitly on the laws of physics, such as radiohaloes and zircon helium content. You can't have it both ways. If creationism knocks down contemporary physics, it also knocks down any of its "proofs" based on contemporary physics.
Having said that, apparently Chinese sources recorded Sirius as being blue-white. I can't find primary sources for this so I'm not entirely sure. I can't access the journal articles quoted by talk.origins without paying, so I'm not entirely sure about those. Also, the Hopi name for Sirius was Blue Star Kachina.