Facts are statements that can be proven true or false based on evidence. They are objective pieces of information that do not change based on personal feelings or opinions. For example, water boils at 100 degrees Celsius at sea level, which is a verifiable fact. In science, facts are often established through observation and experimentation. For instance, the Earth orbits the Sun is a fact supported by extensive astronomical research. Facts serve as the foundation for knowledge, helping us understand the world around us.