The goal of the project is to develop a detailed gravitational map of the Moon, which can then be compared to topographical maps on the Moon to build a picture of what the inside of the Moon is like.

FORBES: NASA's GRAIL Mission Will Unlock Secrets Of The Moon's Interior

Sun Moon Lake: Picture a pristine body of water.

FORBES: Taiwan

That was when he held the antenna rabbit ears of his family's television to get the clearest picture of the Apollo astronauts walking on the moon.

MSN: Discovery's eclectic crew is poised for space

The Economist can take solace that the original picture showing the waxing phase on the left side of the moon in Rio was indeed correct.

ECONOMIST: Letters