What on Earth?
6.4Returning SeriesDocumentary

What on Earth?

Satellites orbit Earth at 17,000 miles an hour, capturing images of our world that are breathtaking, but some are bizarre. This unique perspective reveals objects that seem to make no sense & phenomena that defy explanation. Such images force the question, what on Earth is that?

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5. Riddle of Sardinia Tower

Riddle of Sardinia Tower
0.0Jul 20, 2022 · 42 min

Satellite images capture a triangular castle-like tower located on the Mediterranean island of Sardinia; experts investigate the relics of a declining ancient civilization that may have suffered a celestial catastrophe.