Origin of the Moon book. The Moon is thought to have formed about 4.51 billion years ago, not long after Earth. The most widely accepted explanation is that the Moon formed from the debris left over after a giant impact between Earth and a Mars-sized body called Theia. The Moon has been an issue of deep fascination for centuries, particularly for the Royal Society. Modern astronomy can be said to have started Here we present a new lunar origin model. we show that satellite formation from a synestia can produce the main features of our Moon. The geochemical implications for the Earth of a giant impact model for the origin of the Earth-Moon system (O'Neill, 1991) are discussed, using a mass balance It is characteristic of modern science to ask how things originated. Understanding the origin of the Moon has proven to be challenging for planetary scientists, Two PSI senior scientists, Dr. William K. Hartmann and Dr. Donald R. Davis, were the first to suggest the leading modern hypothesis of the moon's origin, in a Questions regarding the origin of the Moon, its shape and composition gave rise to myths and legends that have accompanied humanity for The Moon is generally believed to have formed from debris ejected by a large off-centre collision with the early Earth. The impact orientation The samples the astronauts brought back to Earth have revolutionized our understanding of the moon's origins, leading scientists to imagine new models of how Moon - Moon - Origin and evolution: With the rise of scientific inquiry in the Renaissance, investigators attempted to fit theories on the origin of the Moon to the
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