Here's why:
* Gravity: Stars form when massive clouds of gas and dust collapse under their own gravity. This collapse creates immense pressure and heat at the center of the cloud.
* Nuclear Fusion: The intense pressure and heat in the star's core trigger nuclear fusion reactions, where hydrogen atoms fuse together to form helium. This process releases enormous amounts of energy, making the star shine brightly.
* Plasma: The extreme temperatures within a star ionize the atoms, creating a state of matter called plasma. Plasma is a superheated gas where electrons are stripped from atoms, making it electrically conductive.
So, while we often think of stars as solid objects, they are actually gigantic balls of superheated, ionized gas held together by gravity and powered by nuclear fusion.
