orbital debris

Space junk consist of abandoned equipments and sent rockets to the orbit and which are have not any useful purpose  now. Space junk also known as space debris, orbital debris and space waste. Most of the space debris are the small particles less than one centimeter. These include dust from solid rocket motors, surface degradation products such as paint flakes, and coolant released by RORSAT nuclear powered satellites and its urgency will cause erosive damage, like sandblasting. Shortly, it will send out a powerful stream of sand. Another kind of orbital debris are over ten centimeters, however their amount is less than the small ones’. Against this larger debris, the only protection is to maneuver the spacecraft in order to avoid collision with them. The other types of debris are catalogued by their size too. Unfortunately, today there is critical density, new debris occures  more faster than these objects are removed from the orbit by various natural or manmade forces. Waste in the space rising so fast that its amount reached “tipping point”. As NASA said in 2011 over 22,000 different objects were tracked. Especially, throughout the 1980s, Soviet Union has made a large number of launches. In addition, some projects made by humankind play the role of catalizator in this hazardous process. For example, after Chine destroyed an orbiting weather satellite with a missile in 2007 as part of anti-satellite test, and two satellites collided over Siberia in 2009 the treat from space junk became more pressing.in addition, scientists have stated that these events more than doubled the amount of catalogued debris in the space. Unfortunately, sometimes humankind forget about impacts of their experiments to the Mother nature in order to achieve their purposes as quick as possible. As Kessler said “ The longer you wait to do this the more expensive it is going to be”, so it will be better to prevent the spreading of space particles and debris.