A fourth grade class in Bozeman has named two moon-orbiting NASA satellites.

The 28 kids from Nina DiMaurio’s class at Emily Dickinson Elementary won a NASA contest to name the two spacecraft that began orbiting the moon on New Year's Eve and New Year's Day.

They named the spacecraft “Ebb” and “Flow.” Their prize winning entry was selected from among 900 entries from 45 states, Puerto Rico and District of Columbia. They won because they did their homework.

Here’s the Winning Essay:
"We have been studying the Solar System and learning about the Sun, Planets, and the Moon. We think Ebb and Flow (or Flood) are good names for Grail-A and Grail-B because the Moon's gravity is the reason we have high tides and low tides. We thought it would be good to have names that represent something very important about the moon and what it causes to happen on Earth. Grail-A and Grail-B are on a journey just like the Moon is on a journey around Earth."

"Ebb and Flow" are the latest satellites to study the moon. They are part of the Gravity Recovery and Interior Laboratory, or GRAIL. GRAIL is the first planetary mission carrying instruments dedicated to education and public outreach.

An additional honor awarded to the students has to do with each spacecraft’s small camera. The fourth graders will be choosing the first images to be shot by the cameras.