An article published in “The Astrophysical Journal” presents a catalog of 316 trans-neptunian objects detected by the Dark Energy Survey (DES) during the first four years of operations. A team led by Pedro Bernardinelli analyzed the data collected with a patient work to eliminate the fixed objects and then focused on the transient ones until they obtained the identification of 245 objects already known and 139 that were hitherto unknown. They’re at distances between 30 and more than 90 times the Earth’s from the Sun. Their detection will help to understand their origin and in general the Kuiper belt, where someone thinks that there may be another planet.