Moon History

Origin and History of the Moon The samples of moon wave returned to Earth by Apollo astronauts have been thoroughly examined. By studying these rocks, as hygienic as thousands of lunar photographs and other data, scientists have worked break through a geologic history of the moon. First Stage The most widely genuine theory of the origin of the moon proposes that the moon make somewhat 4.6 billion age ago. An object round the size of spoil touch the Earth. At that time, Earth is thought to have been naiant with a solid crust. In the theory, the collision broke by dint of the solid crust and splashed a huge gage of molten rock into space. This mass of rock cooled, hardened, and became the moon. Second Stage As soon as the lunar crust became solid about 4 billion years ago, a second face of moon history began. Great showers of rock particles bombarded the moons surface. The particles change integrity as they struck the moons surface forming the impingement craters that cover the moons highlands. Tiny particles of rock alike hit the surface grinding macroscopicr rocks into small fragments. These rock fragments formed the moon dust that spread over the landscape. The fountain lasted for hundreds of millions of years. Third Stage 3.

5 billion years ago, the meteor bombardment stop and a third stage of moon history began. The tinct of large meteorites had caused cracks in the moons surface. Hot lava poured out of the cracks and spread out in layers covering over the antecedently formed craters. The eruptions continued for nearly a billion years. in the end the moon began to cool off and the eruptions stopped. The lava hardened to form the large flat areas called maria. Fourth Stage For the past 3 billion years the moons interior has been cooling off. No volcanoes have erupted. just now a very few large meteoroids have hit the moons surface. Tycho is one of these relatively new craters; it was formed about 10,000 years ago. Micrometeoroids, tiny objects no... If you want to get a full essay, order it on our website: Orderessay

If you want to get a full essay, wisit our page: write my essay .