The twin GRAIL spacecraft are in orbit around the moon, and now they've been named Ebb and Flow.
A fourth grade class in Bozeman, Mont. won a contest to name the lunar probes.
First woman in space, Sally Ride, also announced an education program called "Moonkam," which lets classrooms around the world control cameras on the GRAIL spacecraft.
This same class will be the first one to take pictures of the moon. Engineers at Lockheed Martin in Colorado helped build the spacecraft.
"NASA's scientific missions and the exciting discoveries that they reveal are wonderful catalysts for getting students interested in studying science... and it's really cool. I mean like, really cool to study science," NASA Deputy Administrator for Education Leland Melvin said.
More than 2,100 classrooms are already signed up to participate. They represent more than 150,000 students.
The classroom that won the naming contest is a class at Emily Dickinson School in Bozeman.
Scientists hope the probes will help them create a map of the moon's gravitational field and provide new clues to what lies below the lunar surface.
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