The Event Horizon Telescope (EHT) Collaboration has conducted test observations with the highest resolution ever obtained from the surface of the Earth. This feat was achieved by detecting light from distant galaxies at a frequency of around 345 GHz, equivalent to a wavelength of 0.87 mm. The Collaboration estimates that, in the future, they will be able to make black hole images 50% more detailed than before. This improvement will sharpen images of supermassive black holes, and allow astronomers to image more black holes than ever before.
