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Devac  ·  801 days ago  ·  link  ·    ·  parent  ·  post: Unidentified aerial phenomena I. Observations of events

    Phantoms are observed in the troposphere at distances up to 10 - 12 km. We estimate their size from 3 to 12 meters and speeds up to 15 km/s.

    15 km/s.

That's 54000 km/hr.

That's almost Mach 44.

    in the troposphere

If it was there, you'd hear it.