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jupiter.txt
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1996-01-19
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PHOTO RELEASE NO.: STScI-PR94-26b FOR RELEASE: July 7, 1994
THE GIANT PLANET JUPITER AS SEEN BY HUBBLE
An image of Jupiter taken on May 18, 1994, by the Wide Field & Planetary
Camera-2 (WFPC-2) in wide field mode aboard NASA's Hubble Space
Telescope, when the giant planet was at a distance of 420 million miles (670
million km) from Earth. This "true-color" picture was assembled from separate
HST exposures in red, blue, and green light. Jupiter's rotation between
exposures creates the blue and red fringe on either side of the disk. HST can
resolve details in Jupiter's magnificent cloud belts and zones as small as 200
miles (320 km) across (wide field mode). This detailed view is only surpassed
by images from spacecraft that have traveled to Jupiter.
The dark spot on the disk of Jupiter is the shadow of the inner moon Io. This
volcanic moon appears as an orange and yellow disk just to the upper right of
the shadow. Though Io is approximately the size of Earth's Moon (but 2,000
times farther away), HST can resolve surface details.
Credit: H.A. Weaver, T.E. Smith (Space Telescope Science Institute), and
J.T. Trauger, R.W. Evans (Jet Propulsion Laboratory), and NASA