After launch, mission engineers will spend a few weeks checking all of Juno’s systems. Following this initial checkup, engineers will turn on and test the spacecraft’s science instruments. While Juno spends the next year cruising around the Sun, it will have regular checkups from mission controllers to ensure it’s in good health throughout its voyage.
In space, it’s easier for objects to spin than not to spin.
Juno is designed to handle some problems on its own.
In August 2012, Juno fired its main engine to adjust its course, putting it en route for an Earth flyby about a year later.
The spacecraft is probably bigger than you think.
The moment when the solar panels unfold is critical.
The magnetometer is one of the most important scientific instruments on board.
Three large solar arrays are evenly spaced around Juno to balance its spin.