Image Source: NASA.
On 5 August, NASA launched Juno, a robotic probe that will explore the planet Jupiter and help us understand the origins of our solar system. It is set to arrive and begin orbiting Jupiter's poles on 4 July 2016. See a video below the jump explaining the mission's aims. NASA's Jupiter page is here.
Juno takes off, 5 August 2011. Image Source: Bill Ingalls/NASA/AP via Christian Science Monitor.
Video Source: Youtube.