
Infrared Archives Yield First Tangible Candidate for Planet Nine
Astronomers have identified a potential observational candidate for the hypothetical Planet Nine by analyzing decades-old infrared data. Terry Long Phan and colleagues compared surveys from the 1983 IRAS satellite and the 2006-2007 AKARI mission. After filtering millions of sources, they isolated one object that shifted 47.5 arcminutes over 23 years, consistent with a massive body located 500 to 700 astronomical units from the Sun. While not a definitive discovery, this faint point offers the first tangible target for follow-up observations.













