Using a precision formation-flying technique, the twin GRAIL spacecraft will map the moon's gravity field. The data collected will enable scientists to deduce the moon's interior structure and composition, and to gain insights into its thermal evolution.

GRAIL launched Sept. 10, 2011, from Launch Complex 17-B at Cape Canaveral Air Force Station in Florida. GRAIL will help answer longstanding questions about Earth's moon and provide a better understanding of how Earth and other rocky planets in our solar system formed.

GRAIL Websites

NASA's GRAIL mission page:

http://www.nasa.gov/grail/

Mission GRAIL website:

http://grail.nasa.gov

GRAIL graphics and other downloadable communications materials:

GRAIL Launch Press Kit

+ Download Press Kit (PDF, 1.2 MB)

GRAIL NASAfacts

+ Download NASAfacts (PDF, 1.7 MB)

Click on image to download the banner Click on image to download the banner (PDF, 442 KB) Click on the image to download the The Moon: Crust to Core poster (PDF, 213 KB) Click on image to download the GRAIL Team Patch (JPEG, 16 KB) Click on the image to download the GRAIL graphic elements (JPG, 176)