I have been reading that space debris is super dangerous and is an issue of greater and greater magnitude as time progresses. But I don't completely understand this.
Sure, a small particle the size of a sugar cube traveling at orbital speeds has a lot of kinetic energy that could do damage, but relative to satellites shouldn't these particles be traveling at similar speeds to their satellite targets due to Kepler's laws? What am I missing? Is this a result of non-circular orbits crossing paths?