And you thought, traffic congestion is just on land. The photo (taken by European Space Agency) above shows how crowded the space is.
These debris won't harm us in land as they will melt in the atmosphere before reaching the Earth, but almost 11,000 pieces are in low Earth orbit where most commercial, military, scientific and navigational satellites operate.
Some of these debris are human waste, bits and pieces of blewn-up satellite or other aircraft/equipment.
Related story here.