Black-body radiation describes the continuous spectrum of electromagnetic energy emitted by a theoretical object—a "black body"—that absorbs all incident radiation, regardless of wavelength. The energy radiated by this object is fundamentally dependent only on its absolute temperature, not on its chemical composition. This emission follows a precise spectral distribution curve, which dictates that as the temperature increases, the peak wavelength of the emitted radiation shifts toward shorter wavelengths, and the total radiated power increases dramatically. This phenomenon is a fundamental concept in understanding the thermal properties of matter and plays a crucial role in astrophysics, used to model the energy output and temperature of celestial bodies.