The Horizon Event Telescope (EHT) is a set of radio telescopes scattered throughout the world and interfaced by interferometry, a VLBI designed to obtain a high resolution image of the supermassive Sgr A * black hole located in the heart of the Milky Way. Its working frequency is in the submillimetric part of the spectrum …
After many calculations and experiments in physics laboratories, it is believed that at the beginning of time, the universe was microscopic in size and contained a tremendous amount of energy. At the dawn of time, there was therefore no galaxy, no star, no planet, no atom, no gas, nothing. The whole universe was in a …