According to scientists, the Earth started as a huge incandescent liquid mass that cooled over time, releasing gases and vapors. It underwent many transformations with continents, oceans, and even the air composition changing. The most accepted explanation for the origin of the universe among scientists is the Big Bang theory. The solar system is made up of celestial bodies within the same gravitational field, including planets, stars, the sun, asteroids, comets, and meteoroids.