Well, there are grounds for concern about what Melfy said. It isn't entirely accurate, but I found out somewhere some time ago that as the solar sytem orbits the galaxy, it oscialltes from galactic north to galactic south, and we are entring the galactic north, where radiation emmisions are higher and more dangerous. And I agree the "apparent" change of sun colour is probably just paranoia, just 6 months ago I went to the Amazon River and enjoyed a beautiful sunset while on a small village where I could clearly see the sun was yellow.
Although by this point it's pretty safe to say that the Nibiru badwagon is all but dead, most of the core followers have left except for Gerard and almost all threads are dead. Although it did undergo a brief revival thanks to several stupid news outlets finding out about it and stating it like fact.