π on the sky

Yesterday, π appeared in the Bay Area sky in the form of its first 1,000 digits, almost as if printed by an old dot matrix printer.
It's an ephemeral installation, created as part of the 2012 ZERO1 Biennial, a festival celebrating art and technology in Silicon Valley.

The idea is by ISHKY, an eclectic Californian artist and creator of large-scale installations, has gathered a group of artists, programmers, and scientists.

The numbers are created at an altitude of approximately 3,000 meters by five synchronized aircraft equipped with an unidentified "dot matrix technology," evidently a system that allows letters to be drawn by emitting puffs of smoke, similar to a dot matrix printer. Each digit is approximately 400 meters (¼ mile) high.

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