'Welcome to Jupiter!' NASA's Juno space probe arrives at giant planet

NASA says it received a signal from 540 million miles across the solar system confirming its Juno spacecraft successfully started orbiting Jupiter Juno was launched nearly five years ago on a mission to study Jupiter’s composition and evolution It’s the first spacecraft to orbit Jupiter since Galileo Juno will help provide more information about the mysterious gas giant by looking at Jupiter’s interior The spacecraft will circle Jupiter 37 times for 20 months, diving down to about 2,600 miles above the planet's dense clouds