Event Horizon Telescope
Earth-sized VLBI array imaging black-hole photon-ring scales.
Overview
The Event Horizon Telescope links dishes across the globe into an Earth-sized interferometer operating at 1.3 mm wavelength. In 2019 it released the first image resolving a black hole's shadow-scale structure in M87.
Key discoveries
- First image of a black hole shadow (M87*, 2019)
- Image of Sagittarius A* (2022)
- Tests of general relativity on event-horizon scales