VLBI (Very Long Baseline Interferometry)

Very Long Baseline Interferometry (VLBI) is a powerful astronomical technique that uses multiple radio telescopes located far apart on Earth to work together as one virtual telescope. By synchronizing their observations of distant radio sources, like quasars or galaxies, VLBI can achieve incredibly high resolution, allowing scientists to study fine details in the universe. The "very long baseline" refers to the large distances between the telescopes, which can be thousands of kilometers apart. This method enhances our understanding of cosmic phenomena, helps measure cosmic distances, and improves our knowledge of the structure and dynamics of celestial objects.