Scientists believe that water on Earth may have come from comets due to several pieces of evidence. First, many comets are made mostly of ice and dust, which means they have a lot of water. When comets travel through space and get close to the Sun, they can break apart and release water vapor. Additionally, some research has shown that the chemical makeup of the water in certain comets is very similar to the water found on Earth, suggesting a possible connection. This means that early in Earth's history, when it was hit by many comets, these icy bodies could have contributed to our planet's oceans.
In three to five sentences, explain the evidence that supports the idea that water on Earth may have come from comets.(4 points)
6th grade
1 answer