How old is the moon?
can u guess…How old is the moon?
A discovery by an international team of planetary scientists has revealed that the moon was formed nearly 100 million years after the start of the solar system. The moon’s age is defined on measurements from the interior of the earth combined with computer simulations of the proto- planetary disk from which the earth and other terrestrial planets formed. The team of researchers from France, Germany and the US simulated the growth of the terrestrial planets (Mercury, Venus, Earth and Mars) from a disk of thousands of planetary building blocks orbiting the sun. By analysing the growth history of the earth-like planets from 259 simulations, the scientists discovered a relationship between the time the earth was impacted by a Mars-sized object to create the Moon and the amount of material added to the earth after that impact. This is the first ‘geologic clock’ in the early solar system history that does not rely on measurements and interpretations of the radioactive decay of atomic nuclei to determine age.