Hydrogen is the simplest and most abundant element in the universe, represented by the symbol H and atomic number 1. It is a colorless, odorless gas at room temperature and is highly flammable. Hydrogen plays a crucial role in the formation of stars and is a key component of water, making it essential for life on Earth. In addition to its natural occurrence, hydrogen is increasingly being explored as a clean energy source. It can be used in fuel cells to generate electricity, producing only water as a byproduct. This makes hydrogen a promising alternative to fossil fuels in the quest for sustainable energy solutions.