Orbiting a mere 11 kilometers above the surface, the cameras of the two spacecraft in the GRAIL mission captured this dramatic footage just days before mission end.
Watch.
GRAIL’s primary science objectives were to determine the structure of the lunar interior, from crust to core and to advance the understanding of the thermal evolution of Earth's companion.
Hat tip: Universe Today
Wayne

The printer allows us to experiment and see what works - or doesn't. The second picture shows the first C&DH prototype (the big one) compared with the currently flight model version which has shrunk down to fit inside a CubeSat.
New robotic missions, the rise of commercial carriers and the future of Mars' most recent visitor, Curiosity, are among 




















