the moon huge volume and how it formed, has been plagued by us.
the terrestrial planets of the solar system, mercury and Venus has a satellite.Mars has two moons, a radius of about 11.1 km of another 6.4 km, and our moon radius of 1738 km.
although before scientists have been calculated with the sampling, found that the moon is in the early earth, from a primitive planet hit the ancient earth, out.But didn't explain as a satellite of the moon rare volume.
in recent days, the team from Israel says: we see the moon at night is not the first moon of the earth, but in the past, a group of the moon around the earth in the last one.
"the ancient earth once ruled over a series of satellite, and each satellite are formed by collisions with starbase. Some of the stars out of orbit, while others fall to the earth or collide with each other to form bigger satellite".To test the calibration of the formation of these understanding, the researchers conducted a nearly 800 times earth's impact on the environment simulation.
in the end, the results of simulation test and before scientists also is consistent with the understanding of planet formation."Growth" in the final stages of the earth, the earth has experienced many larger impact from the environment.These "shock" has not only brought more composition of the material and also brought rich resources, until now the size of the is reached.
professor, said:" we believe in our before the earth had many "moon" ".
the earth's tidal forces can make the satellite slowly outward migration (now the moon slowly moving at an annual rate of about 1 cm).Before the existence of "the moon" will be another "moon" is formed gradually moving out of orbit, their gravity will influence each other and eventually lead to change their original orbits.
lead author Rufo, said: "the process is likely to form small satellites cross track, collision and merger"."A series of such stellar collisions between increasing gradually formed a larger today we see the moon, the moon".
in this paper, the author published for headlines, does not represent the headline position today.