NASA nailed their big Mars rover landing at the beginning of the week, but as if to show that things don't always go so swimmingly, today their unmanned Morpheus test lander crashed and burned (and exploded) in its first attempt at free flight:
Now it's easy to say this in hindsight, but maybe a single thin central thruster on a wide platform--while no doubt efficient--is kind of inherently unstable? Might be back to the drawing board for that one.