We're more or less oblivious to 75% of junk in geosynchronous orbits around Earth

The small bits of space junk identified by the study are often overlooked; they’re faint, small, and in a region that’s monitored less intensively than low-Earth orbit. As a result, scientists probing geosynchronous orbits above the equator found that the majority of debris located 36,000km out remains uncatalogued. That could be a problem – or more specifically, a danger – for any spacecraft placed in those orbits.