GRAIL: the story

Chapter 1 of 3

10 September 2011

Launch

GRAIL left Earth on a Delta II 7920H from Space Launch Complex 17B.

AI-narrated

2011–2012

Life’s work

Twin spacecraft that flew in formation to map the Moon's gravity in more detail than ever before.

AI-narrated

17 December 2012

Impact

Low on fuel, Ebb and Flow were flown into a mountain near the north pole. The site was named after Sally K. Ride.

AI-narrated

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