it is time to "bomb the moon." seriously, we are going to bomb the moon. at 7:30 eastern time friday morning, nasa is going to shoot a missile traveling at twice the speed of sound -- sorry, twice the speed of a bullet, into the moon. specifically we will be shooting this missile at the moon's south polar region. other than the fact that this sounds like a heck of a lot of fun for the nasa folks who get to literally shoot the moon, why are we doing this? well, apparently it's all about the debris cloud, the impact of the missile is expected to produce a six-mile-high plume of moon debris and nasa thinks that the big plume of moon debris will help them figure out if there's any water below the dry, dusty surface of the moon. nasa intends to broadcast the moon bombing live, and we will cover what happens right here on "the rachel maddow show" at 9:00 p.m. eastern time friday night. which on friday is, i think,