The US$1.1 billion Juno mission hit a huge milestone Monday night when it successfully entered Jupiter's orbit. But what will happen to it in February 2018 when its job is done? Spacecraft don't really get happy retirements.
Juno is equipped with 9 scientific instruments all dedicated to studying the largest planet in the solar system.
Aerojet Rocket has been selected by NASA to develop a Solar Electric Propulsion system and the project is worth $67m. It will be used for robotic missions when travelling to an asteroid and others
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