39. Nuclear Fusion

Nuclear fusion is a process that happens when light atoms join together to form a heavier . When this happens, a large amount of energy released. This is the same process that powers sun and other stars in the universe. Inside sun, hydrogen atoms fuse together to make helium, heat and light that reach the Earth.

Scientists long dreamed of using nuclear fusion on Earth a clean and powerful energy source. Unlike fossil such as coal or oil, fusion does not greenhouse gases that cause climate change. It also much less radioactive waste than nuclear fission, which used in today's nuclear power plants. Fusion fuel, hydrogen, is also easy to find in water other natural sources, making it a nearly limitless of energy.

However, creating fusion on Earth is difficult. To make atoms fuse, scientists must heat gas to over 100 million degrees Celsius, hotter the sun's core. At this temperature, the atoms so fast that they can overcome their natural and fuse together. Building a machine that can contain such high temperatures is a huge challenge.

the world, large projects like ITER in France trying to make fusion power possible. If scientists , fusion could change the future of energy. It give us clean, safe, and almost endless electricity homes, factories, and cities.

In short, nuclear fusion the energy of the stars. It promises great for humanity, but we still need time, technology, teamwork to make it work on Earth.