Scientists propose new theory for Earth's formation
Scientists have studied Earth for so long, but some questions remain unanswered. An international research team led by ETH Zurich and the National Center for Competence on Planetary Research proposes a new answer to the question- how the Earth was formed. The prevailing theory suggests that the Earth was formed from chondritic asteroids. These are relatively small and simple blocks of rock and metal that formed in the early solar system. However, the problem with this theory is that no mixture of these chondrites can explain the exact composition of Earth, which is much poorer in light, volatile elements such as hydrogen and helium than expected. Over the years, many theories have been proposed to explain this difference. For example, it was proposed that the objects that later became Earth collided and generated tremendous heat. Light components are evaporated; consequently, left the planet with her current makeup. The study’s lead author, Paolo Sossi, Professor of Experimental