À la recherche de planète 9

At the edge of our solar system, a mysterious giant planet is said to be hidden, with a mass equivalent to five times the Earth. The year there would last more than ten thousand years, so fa... Read allAt the edge of our solar system, a mysterious giant planet is said to be hidden, with a mass equivalent to five times the Earth. The year there would last more than ten thousand years, so far from the Sun it orbits. Several teams of astronomers, including the Americans Chad Truji... Read allAt the edge of our solar system, a mysterious giant planet is said to be hidden, with a mass equivalent to five times the Earth. The year there would last more than ten thousand years, so far from the Sun it orbits. Several teams of astronomers, including the Americans Chad Trujillo and Scott Sheppard, are relentlessly tracking down this hypothetical exile. With what ... Read all