The NASA space probe New Horizons yesterday reached successfully Ultima Thule, the farthest celestial object that humanity has explored so far, located in the Kuiper belt, about 6,500 million kilometers away from the Sun or 6 hours and 7 light minutes from Earth. "Confirmed! New Horizons It has flown over the most distant celestial object ever visited by a spacecraft, "announced the head of NASA, Jim Bridenstine, on Twitter minutes later. The mission of New Horizons, is to take high resolution photographs of Ultima Thule for 72 hours from 3,500 kilometers away in order to calibrate its surface and composition and find out if it has an atmosphere or other celestial bodies around it. Yesterday I sent the first data: it is a single asteroid with a shape similar to a peanut. According to the scientist at Johns Hopkins University Hal Weaver, that form would explain another mystery of this distant celestial body: its variations of brightness. The information of the New Horizons will help to better understand the formation of the Solar System.