Lost Soviet probe theory

The near-Earth object 1998 KY26 is accelerating in a way gravity alone cannot explain, but NASA Administrator Jared Isaacman said there is no evidence it threatens Earth or is anything other than an asteroid. A Georgia Institute of Technology study found it is likely too warm to be a “dark comet,” while researchers say the possibility it is the lost Soviet spacecraft Phobos 1 remains plausible but unproven. Japan’s Hayabusa2 spacecraft is scheduled to rendezvous with KY26 in July 2031.

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