How much junk is in space? Why should I worry about junk space?

Space junk are artificial objects orbiting Earth useless. It consists of things as varied as large debris and old satellites rockets, explosions challenges, or challenges rocket 
components such as dust and paint chips.

Garbage has become a growing concern in recent years, orbital speeds can be highly damaging to functioning satellites models.

The concept of space junk was born on October 4, 1957. More than 4,200 launches have been littering Earth orbit. The small size of the challenges and high speed make them very dangerous projectiles.

Despite the small size of most of the fragments, the breakneck speed at which they are subjected, make them a serious threat to any mission may be made in the near future.

PRECAUTIONARY MEASURES

  Among the measures they are beginning to take to avoid risks include:

             - Study and measurement of objects by radar and optical telescopes

             - Attempt to reduce the number of objects that can become space junk.

             - Establish international agreements