The space telescope has been making a lot of progress in space exploration.
Last December, Hubble spotted a huge water plume emanating from the south pole of Europa, the sixth-closest moon to Jupiter and the sixth-largest moon in the solar system.
NASA's 2015 proposed budget includes funding for a robotic mission to study this new find on Europa.
NASA is looking to launch the first of a series of robotic missions to Europa in the mid 2020s.
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