Very Long Baseline Interferometry (VLBI) is a technique used in radio astronomy to improve the resolution of observations. It involves multiple radio telescopes located far apart on Earth, which work together to observe the same astronomical object. By combining the signals from these telescopes, scientists can create detailed images and gather precise data about distant celestial bodies. This method allows astronomers to study phenomena such as black holes, quasars, and pulsars with remarkable clarity. VLBI can also be used for measuring the precise positions of objects in space, contributing to our understanding of the universe's structure and dynamics.