Infrared interferometry is a technique used in astronomy to study the properties of celestial objects by combining the light from multiple telescopes to create high-resolution images. By measuring the interference patterns of the light waves, astronomers can obtain detailed information about the size, shape, and temperature of stars, galaxies, and other astronomical bodies. This method is especially useful for studying objects that emit infrared radiation, as it allows researchers to see through dust clouds and detect cool or obscured objects that are invisible in visible light. Infrared interferometry has been used to study a wide range of astronomical phenomena, from protoplanetary disks around young stars to the supermassive black holes at the centers of galaxies.