All Encyclopaedia Questions and answers

How old is our Earth? Scientists believe that our Earth was formed approximately 4.54 billion years ago. About 14 billion years ago, there was a massive explosion, which the scientists later named The 'Big Bang'. It relalised radiation, particles and huge clouds of atoms, dust and gas. Our Earth is believed to have been born as a result of this Big Bang. Where in Space our Earth located? Our Earth is located in a spiral galaxy named the 'Milki Way' which is  part of the solar system also consists of the Sun,the Moon,the other seven planets and their moons,numeeious comets,astroids andminor planets. The Solar System was formed from a large,rotating cloud of interstellar dust and gas called the 'Solar Nebula',orbiting the milki way's galactic centre. The Solar Nebula was composed of hydrogen and helium,created shortly after the Big Bang. How did the Earth form? After the Big Bang, particles were floating around in space. The force of gravity pulled the particl...