cometBay seniors who would like to get up very close to a reasonable facsimile of an actual comet have their last chance this weekend. Metamorphosis, a luminous, 12-foot long sculpture created by scientists at NASA’s jet propulsion laboratory, is available for viewing at the Exploratorium on Pier 15. It emits clouds of mist and water vapor mimicking the atmosphere of comets. Best viewed at dusk. Free.



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