How is a " rainy Sea " on the face of the moon?

 How is a " rainy Sea " on the face of the moon?

A new study suggested that one of the biggest gaps in the crust of the moon surface caused by the collision of an asteroid width of 250 km moonscape around 3.8 billion years ago , forming a sea of ​​rain , also known as the right eye of " the face of the moon ."

Scientists say the asteroid three times larger than previous estimates , and scattered debris from the collision was to fall on the planet.

The asteroid large enough to be classified as a small planet , rock swim in space and bearing elements of the transformation the entire configuration of the world.
Said study author Professor Peter Schultz , a geologist , a planetary scientist from Brown University in the United States : "One of the implications of this study is to find out that the asteroid probably were not these small pieces flying around us . In that time there was probably a lot of these small planets " .

"It was to be a disaster."

Scientists believe that the asteroid which this hole creating a span of 250 km, and the nozzle Sea of ​​Rains displayed 1200 km Until now, scientists used computer models to estimate the size of the asteroid, which led to its formation.

But the new assessment of the collision has been re-created in the laboratory using a high penetration ability to shots fired from a launcher, up three floors.
And launched a search small balls of metal team quickly 22.000 kilometers per hour toward the plate curved aluminum.
And "Shultz Professor of the Department of Science told the BBC World Service, the experiment was filmed using high-speed cameras can capture up to one million frames per second."
Through the analysis of slow motion footage and analysis of collision pattern, researchers were able to calculate the size of the asteroid that crashed into the moon.

He explained Professor Shultz : "We know that there was a large asteroids , but this study has increased the size of asteroids accepted by a significant increase ."

" The previous estimate of the asteroid Aambrio in the range of 80 km , but we increased it tenfold ."

" Huge weapon"

The researchers say that the asteroid traveled at speeds of more than 70 000 km per hour to hit the lunar surface at an angle of approximately 30 degrees.

Collision tremendous speed not only leaves this giant moon in the valley, but he sent billions of tons of debris toward the ground.