The water on Earth didn't exist here before, so where did it come from? This is a question that has puzzled scientists for a long time. However, recent research suggests that water was present in the early Earth, but it was in the form of hydrogen and oxygen molecules scattered throughout the solar system. These molecules eventually combined to form water on Earth.

Scientists believe that the Earth was initially formed from dust and gas, and its surface was extremely hot. During this time, the atmosphere consisted mainly of hydrogen and small amounts of oxygen. As the planet cooled down, water vapor began to condense and form clouds.

Another theory suggests that water was delivered to Earth by comets or asteroids. These celestial bodies contain significant amounts of water in the form of ice. When they collide with the Earth, the ice melts and contributes to the water on our planet. This theory is supported by the fact that the composition of water on Earth is similar to the water found in comets.

Regardless of its ultimate origin, the presence of water on Earth is essential for life as we know it. It plays a crucial role in various geological processes and is an essential component for the development and sustenance of life. Understanding the source of Earth's water is not only fascinating but also vital for our understanding of the formation and evolution of our planet.