It was determined to be possible to reactivate the spacecraft in 2014 , when it again made a close approach to Earth , and scientists discussed reusing the probe to observe more comets in 2017 or 2018 .
It was determined to be possible to reactivate the spacecraft in 2014 , when it again made a close approach to Earth . 
 Scientists attempted to reuse the probe to observe more comets in 2017 or 2018 .