Did You Know: Space – Why is there life on Earth?
Earth is at just the right distance from the sun for it to be not too hot and not too cold for life to exist.
This is called the habitable zone. Our planet also has all the ingredients needed for life to begin and survive.
These include liquid water, raw materials such as soil, and energy from the sun.
Energy
For life to exist, there needs to be a constant source of energy. On Earth, that energy comes from the sun.
Raw materials
The raw materials that make up all living things can be found almost anywhere on Earth. Add water and energy to these materials and life can appear. This is how all plants, animals, and everything living on Earth began.
Water
Planet Earth has plenty of liquid water, unlike the other planets in our solar system. Water is essential for life—without it, life would not exist.
Where does life come from?
Stardust
All the ingredients that made the Earth and everything on it came from stardust. This was created when dying stars exploded. This means that we are all made from stardust!
This dust later made more stars and planets like Earth.