fri 29 jan 2016, 16:37

The earth cracked head on another planet

LOS ANGELES –

The earth is, when he was still very young, head-on another planet popped up. That planet, Theia, splashed there from each other. From the debris created the moon, but the remains are sucked up by the earth. In other words: the earth is actually composed of two planets.

A group of scientists concludes that Friday in the important wetenschapsblad Science. It was already known that there is a collision between the earth and Theia should have been. That would be about 4.5 billion years ago, must have happened when the earth 100 million years old. But it was not yet clear how the collision was and what is.

To the past to find out, looked at the researchers of the chemical “fingerprint” of seven rocks that astronauts brought from the moon. That they compared with six volcanic rocks from the bowels of the earth. The stones were quite equal to each other, which means that they have the same origin.

To make that possible, there should be at the collision, a tremendous power has been released. It led the researchers to conclude that the blast between the earth and Theia head should have been. ,,Theia is thoroughly by the earth and the moon mixed and evenly distributed. That explains why we no different fingerprint see”, say the scientists.

Another theory is that Theia was along the earth is gescheerd. This would be the planet in pieces torn. The debris would be in orbit around the earth have come, what we now see as the moon. But in that case, would the stone on the moon must be different from the stones on earth, because they have a different origin.