Analyse @NASA's tweets
After visiting Jupiter, Saturn, Uranus and Neptune, @NASAVoyager 2 has left the Sun's protective bubble and is now flying in the interstellar space between the stars. Learn more about this incredible mission as the encore to the Grand Tour begins: https://t.co/nvffnCO3jm #AGU18 https://t.co/T6kOWrxYzH