They struck the moon with 2 objects, an empty rocket hull and a spacecraft, and in return they got their proof. Water was found on the moon in large amounts.
I like the image google has up for this event and how the word google is written in water. Creative people. Read some bits I selected from the article here:
Suddenly, the moon looks exciting again. It has lots of water, scientists said Friday — a thrilling discovery that sent a ripple of hope for a future astronaut outpost in a place that has always seemed barren and inhospitable.
Experts have long suspected there was water on the moon. Confirmation came from data churned up by two NASA spacecraft that intentionally slammed into a lunar crater last month.
“Indeed, yes, we found water. And we didn’t find just a little bit. We found a significant amount,” said Anthony Colaprete, lead scientist for the mission, holding up a white water bucket for emphasis.
The lunar crash kicked up at least 25 gallons and that’s only what scientists could see from the plumes of the impact, Colaprete said.
Astronaut Buzz Aldrin, who in 1969 made his historic Apollo 11 moonwalk with Neil Armstrong, was pleased to hear the latest discovery, but still believes the U.S. should focus on colonizing Mars.
“People will overreact to this news and say, `Let’s have a water rush to the moon,'” Aldrin said. “It doesn’t justify that.”