NASA is going to bomb moon to explore as to whether it has water under its surface.

A NASA instrument sent through an Indian mooncraft Chandrayaan had found that water is on the moon. Tomorrow, NASA’s LCROSS, which is short for Lunar Crater Observation and Sensing Satellite, will send a spent booster rocket that will crash into a crater at 5,600 miles per hour near the lunar south pole in search of ice mixed in the soil of the crater’s floor. Scientists suspect there will be billions of gallons of it, but want to find proof.

“We can directly measure water ice, and then we can fly right through the plume,” said LCROSS project manager Daniel Andrews.

The bombing will go down on Friday at 7:31 a.m. Eastern time.