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A pair of Grail spaceships

The face of the asteroid Eros before the crash landing of the NEAR spacecraft. Photo: NASA

Spacecraft suicide missions

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Illustration of the GRAIL mission that will attack the moon in 2012. Image: NASA

A pair of GRAIL spacecraft that have been orbiting the moon for the past year will crash into its surface tomorrow night

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Loom slopes in the Mandel'shtam crater on the moon. The slopes were cut by small impact craters. Photo: NASA's LRO spacecraft

Earth's Moon - Summary of Findings Part 1

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The far side of the Moon as imaged by the Ebb spacecraft, one of two GRAIL spacecraft orbiting the Moon, January 2012

GRAIL spacecraft photographed the far side of the moon

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Illustration of the GRAIL mission that will attack the moon in 2012. Image: NASA

Grail spacecraft reached the moon and mapped the gravitational field

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Illustration of the GRAIL mission that will attack the moon in 2012. Image: NASA

The twin Grail spacecraft began their journey towards the center of the Moon

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NASA announces the launch of two satellites to measure the gravitational field on the moon

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