Animals like plants need the sun and all people will tell you that if the sun is out for weeks, they feel depressed and sad. The Sun gives us tone and the image of the cock that launches his cororico at dawn, we sing more readily under the Sun than in the rain, although the …
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 …