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Hubble's iconic images captured the public's imagination. Will NASA's next big space telescope, which sees infrared light, produce astronomy scenes that pack a similar punch?

If jets of water vapor are indeed erupting from Europa, a spacecraft could potentially fly through them and analyze their chemistry. The moon is believed to have a vast subterranean, saltwater ocean.

That, in case you're wondering, is another 3 million years. Astronomers made that calculation after producing the first 3-D view of the pillars made famous by the Hubble Space Telescope.