Rahul Rao is a graduate of New York University's SHERP and a freelance science writer, regularly covering physics, space, and infrastructure. His work has appeared in Gizmodo, Popular Science, Inverse, IEEE Spectrum, and Continuum. He enjoys riding trains for fun, and he has seen every surviving episode of Doctor Who. He holds a masters degree in science writing from New York University's Science, Health and Environmental Reporting Program (SHERP) and earned a bachelors degree from Vanderbilt University, where he studied English and physics.
Such is the fate of the purported planet HD 131399 Ab, which scientiststo have three suns. When astronomers tried to look at the planet again, they found that it was actually something entirely different and far in the background masquerading as an exoplanet. Now, the astronomers who originally found the planet are retracting their discovery.The HD 131399 star system lies about 350 light-years away from Earth in the constellation Centaurus.
"It must be a very red star — probably a red giant, and maybe even one with a disk." Kevin Wagner, an astronomer at the University of Arizona and one of HD 131399 Ab's would-be discoverers, told Space.com. That red color would have made the star look deceptively like a planet, he noted. Additionally, this distant star apparently moves abnormally quickly, hence it appearing to match pace with a much nearer star system. This discrepancy suggests that some phenomenon gave the star a boost — perhaps it was ejected from its host system or experienced a close encounter with another system, scientists think.
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