Gravity: there is a way around everything

...walking outside, I glanced up when a crow squanked, and saw this. A silk oak leaf, questioning, no, refuting gravity. On a still, breathless day, it hung, about 15 feet over my head, with nothing between it and the sky. I stared at it for five or six minutes before I went to get the camera. Click the pic to see it more clearly....

I figured it out, but it still seems impossible.

Guesses?

gravity defying plants in Paris

This living façade was intended to be temporary, but everyone liked it so much that they kept it.


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Standing in front of it, I was astonished at how it made me feel. Then my analytical brain kicked in and wanted to pin the logistics, the how of the whole thing. I have two plausible theories for anyone interested. No one? Right.
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However it was done, it's just wonderful.




















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