A blackbody is an idealized physical object that perfectly absorbs all incoming radiation, regardless of frequency or angle. It does not reflect or transmit any light, making it appear completely black at room temperature. When heated, a blackbody emits radiation in a characteristic spectrum that depends solely on its temperature, described by the laws of thermodynamics. The concept of a blackbody is crucial in physics, particularly in the study of thermal radiation and the Planck's law. Real objects, like stars or heated metals, approximate blackbody behavior, allowing scientists to understand their emission properties and temperature.