Could 'Oumuamua Be A Fluffy Radiation-Driven Icy Fractal From Another Star System?
"Oumuamua, the first object ever seen passing through our solar system from interstellar space, was thought to be emitting gas like a comet to explain its weird motion," reports Syfy Wire, "but a new idea is that the comet is just very, very porous. "Astronomer Phil Plait writes:"I certainly hope we find more beasties like this one," Plait writes. "They can tell us so much about how planets form in other star systems, which is pretty hard to figure out from dozens or hundreds of light years away. "It's a lot easier when they obligingly send bits of their building materials to us."