From the Earth to the Moon - again

Well, it's official - NASA is going to return to the Moon before the end of the next decade, probably in 2018. The spacecraft they plan to develop looks remarkable similar to the Apollo program spacecraft - but it will be updated (of course). It'll also apparently cost somewhere on the order of $100+ billion dollars to develop and build. Not sure if it's worth it, but the new vehicle is also expected to be the main way to deliver people and supplies to the International Space Station (replacing the Shuttle) and will also possibly be the vehicle (or one of the vehicles) used for human exploration of Mars. Maybe it's worth it, but I don't know - we'll see I suppose. I'm sure many people will weigh in with their opinions over the next few days and weeks.