 NASA launched Juno on August 5 , 2011 to study Jupiter in detail from a polar orbit when it arrives in 2016 . The spacecraft will be placed in a polar orbit to study the planet 's composition , gravity field , magnetic field , and polar magnetosphere . Juno will also search for clues about how Jupiter formed , including whether the planet has a rocky core , the amount of water present within the deep atmosphere , and how the mass is distributed within the planet . Juno will also study Jupiter 's deep winds , which can reach speeds of 600 km / h . Juno started orbiting Jupiter on the night of 4th July 2016 . 
 NASA launched Juno on August 5 , 2011 to study Jupiter in detail from a polar orbit when it <a href='uninflect' title='1'><mark>arrives</mark></a> in 2016 . The spacecraft will be placed in a polar orbit to study the planet <a href='null_genetive' title='2'><mark>'s</mark></a>composition , gravity field , magnetic field , and polar magnetosphere . Juno will also search for clues about how Jupiter formed , including whether the planet <a href='got' title='3'><mark>has</mark></a> a rocky core , the amount of water present within the deep atmosphere , and how the mass is distributed within the planet . Juno will also study Jupiter <a href='null_genetive' title='4'><mark>'s</mark></a>deep winds , which can reach speeds of 600 km / h . Juno started orbiting Jupiter on the night of 4th July 2016 . 
NASA launched Juno on August 5 , 2011 to study Jupiter in detail from a polar orbit when it arrive in 2016 . da spacecraft will b placed in a polar orbit to study tdaplanet  composition , gravity field , magnetic field , and polar magnetosphere . Juno will also search for clues about how Jupiter formed , including whether the planet got a rocky core , thdamount of water present within thedaep atmosphere , and how the das is distributed within the planet . Juno gon also study Jupiter  deep winds , which can reach speeds of 600 km / h . Juno started orbiting Jupiter on the nite of 4th July 2016 .