What are they? Aliens probing our atmosphere?
Most UFOs – like the Chinese spy balloon – can be explained away. But what about the other 2%?
Spy balloon, UFO or Dragon Ball? Japan baffled by iron ball washed up on beach
Space junk removed from West Australian beach but origin still unknown
Mystery object found washed up on remote Australian beach identified as space debris
US conducted ‘multi-decade’ secret UFO program, ex-intelligence official says
Mexican senate hears testimony on extraterrestrial life: ‘We are not alone’
NASA appoints UFO research chief and plans to crowdsource help with sightings
Pentagon ex-UFO chief says conspiracy theorists in government drive spending
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