The universe is full of mystery, some of which can be found on planet Earth. From the Black Knight satellite, that has supposedly orbited Earth for the last 13,000 years, to the mysterious Baigong Pipes in China, AllTime10s presents, 10 objects that might be of alien origin.
[youtube https://www.youtube.com/watch?v=HKtj1CuLZD0]
and check this out…
[youtube https://www.youtube.com/watch?v=zsvsos7HvPU]
