I think there are at least two competing issues - the first is that, in large part, space has become "boring" for many, for lack of a better word. We've spent years and years circling in LEO with shuttle and ISS, without much "wow factor" to show for it. There is a certain pessimism that comes with relying on a space agency that has its priorities shifted with each and every administration change (and my post history here certainly reflects that, as I often comment on space-related articles and not many others). Since Apollo, there has not really been a mission that has captivated the masses nearly as much. Sure, we have the efforts of SpaceX and SpaceShip One and others in the private sector, but there's nothing truly inspiring about that, at least, not yet. Resupply to the ISS just isn't sexy. I think Chris Hadfield did an absolutely excellent job of trying to bring the ISS some much-needed publicity and popularity with his various experiments and clips from the ISS, and that was a great idea and a great start. Going to the moon? Going to Mars? Now you'd grab people's attention and maybe even inspire renewed interest in the sciences and the space program (whether public or privately funded). But the Voyagers can only leave the solar system so many times before the general reaction becomes "Meh, this again?" Curiosity can only drill into so many rocks on Mars before the average person starts to lose interest.
The second is that, for a post such as this, there's not much that can necessarily be added by most - just the concept that you could fit almost four Earths into that hexagonal storm is lost on or incomprehensible to many. Not necessarily in the