zoom_in Click to enlarge

GRAIL

▲ ▼

description GRAIL Overview

GRAIL, short for Gravity Recovery and Interior Laboratory, was a NASA mission that used two spacecraft to map variations in the Moon's gravitational field. Launched together in 2011, the probes flew in coordinated low lunar orbits and measured tiny changes in the distance between them. The resulting data helped scientists investigate the Moon's crust, interior structure, and geological history.

help GRAIL FAQ

What does the acronym GRAIL stand for in NASA's lunar mission?

GRAIL stands for Gravity Recovery and Interior Laboratory. It was a NASA mission that utilized two identical spacecraft to create a highly accurate gravitational map of the Moon.

How did the GRAIL spacecraft measure the Moon's gravitational field?

Launched together in 2011, the two probes flew in coordinated low lunar orbits while continuously measuring tiny changes in the distance between them. Scientists used these distance variations to detect gravitational anomalies caused by mass concentrations beneath the lunar surface.

What happened to the GRAIL mission at the end of its operational life?

After successfully completing their primary science mission in 2012, the twin spacecraft were deliberately crashed into a mountain near the Moon's north pole. They were purposefully impacted to ensure they would not contaminate any historic lunar landing sites.

What famous educational program was associated with the GRAIL mission?

NASA partnered with Sally Ride Science to run the GRAIL MoonKAM (Moon Knowledge Acquired by Middle school students) program. The initiative allowed students from around the world to request specific images of the lunar surface be taken by cameras mounted on the spacecraft.

swap_horiz

Looking for GRAIL alternatives? Compare top competitors ranked & scored

arrow_forward