Question

In three to five sentences, explain the evidence that supports the idea that water on Earth may have come from comets. (ina 7th graders words

Answer 1

Scientists think that water on Earth might have come from comets because comets are made mostly of ice and dust. When comets travel through space and get close to the Sun, they can melt and release water. Researchers have studied the composition of some comets and found that their water has a similar chemical makeup to the water found on Earth. Additionally, there are theories that during Earth’s early history, many comets collided with our planet, bringing water along with them. This could explain how our planet ended up with so much water!