t's not a bird. It's not a plane. And it's not an alien. (It's never an alien, from planet Krypton or otherwise.)
Still, the origin of a strange, balloon-like UFO that appeared in the sky over the city of Sendai, Japan, yesterday (June 17) around 7 a.m. local time, remains a mystery a full day after its sudden arrival. The object looked like a large white, unmanned balloon attached to two crossed propellers, according to news reports. The UFO lingered in the sky, largely motionless, for several hours before drifting over the Pacific Ocean, AFP reported.
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