Historical evidence
2012: A Scientific Reality Check
Don Yeomans / NASA JPL
Gives a pre-event astronomical rebuttal to 2012 catastrophe scenarios, including the claimed Nibiru collision and galactic alignment. Documents contemporary evaluation.
Bibliography entry · Source text is available through the cited link below.
View cited source · jpl.nasa.gov ↗
Edition and location
English web text or digitized publication at cited URL
Article paragraphs on Nibiru, calendar cycles and alignments