Most of the space debris is not associated with known orbiting objects. Through the use of the Isaac Newton telescope, scientists have discovered that they are not associated with vehicles listed in open catalogs.
The researchers suggest that this fraction of debris in orbit could have formed due to the termination of the operation of secret satellites of the armies of different countries. About 75% of all the debris recognized as space debris is not related to known vehicles. As a result, experts came to the conclusion that there are a large number of satellites that are unknown to anyone except the authorities of the countries that have launched them into the public domain.
Specialists at the University of Warwick analyzed the US space observation catalog, which is the largest set of publicly accessible databases of this type. The list of space debris is replenished thanks to the efforts of teams of 30 radars and a large number of telescopes and the forces of a number of orbital systems.
As a result, scientists focused on geostationary orbits located at a distance of 36 thousand km above the equator. The elements of space debris found in this area remain in orbit for a long time, according to Planet Today.