For the first time in human history, we have seen the far side of the Sun. It seems rather remarkable, at first thought, that this is even considered a triumphant result. However, the prediction of space weather through the monitoring of solar active regions is hugely important for our technology dependent society. Also great, is that we can now track individual active regions to get a sense of how long they last and study other aspects of the active regions which can lend insight into the underlying physics of solar activity.
Here is a video released from NASA's Goddard Space Flight Center describing the achievement.