Space/Science — HabitableZone

Space/Science » in reply to Black Triangles on Space.com

"Big Black Delta"

An analysis of a 2000 sighting is here, and other folks think the same thing.

There are "hybrid" lighter-than-air vehicles which fit the rough descriptions. Many of them are flatter than round, and some are triangular.

Certainly the simplist explanation.

Arf

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