This is translated from a polish article , No it was not a woo site I think , I just found this , I just hope this is not old news anyways lets discuss.
Six astronauts from the International Space Station (ISS) were evacuated to two capsules Russian Soyuz ships because of the upcoming space station garbage - said on Tuesday, 28 April 2011 agency Interfax.
"Garbage was located too late to be able to perform the dodge" - Interfax quoted the Russian representative to supervise the situation on the ISS.
Space junk is a serious threat to the space station, satellites, but also for all inhabitants of Earth.
Space missions, carried out since the fifties of last century, in addition to providing us with knowledge of the cosmos and the satisfaction of detachment from the earth left behind thousands of tons of scrap metal circulating in orbit. The situation is becoming more dangerous because fragments of old rockets and satellites, threaten astronauts' lives. Falling on the surface of the planet's space junk can also be dangerous for her grounded people. Scientists frantically looking for methods of protection devices and methods for purification of the orbit.
Space junk can be divided into two, quite generally sounding categories - small and large. The vast majority of fragments with a diameter no larger than 1 centimeter. Their number exceeds tens of millions. However, most of the mass of space junk falls on large objects. This category is divided into parts impossible to trace, with a diameter of 1-10 cm, which is about half a million, and larger objects - we know about the existence of about 19 000th Up to 98% of the total mass of rubbish accumulated in the 1500 objects weighing over 100 kilograms. It is estimated that in low earth orbit drifts of about 5 500 tons of garbage.
To the formation of cosmic "dumps" contribute mainly aerospace parts and abandoned civilian and military satellites. Very dangerous are the remnants of satellites powered by nuclear reactors. Although the reactor cores themselves are not a threat since the end of the mission were launched to the outer orbit, the coolant that leaked is a serious problem. During the launch of the 16 reactors of Soviet satellites to monitor the movements of ships of NATO, the space of about 130 kg leaked coolant. Smaller drops have already fall apart, and large - larger than 5.5 centimeters have the potential to threaten the active satellites.
The oldest known object that only clutters up the space today is the Vanguard I, the American artificial satellite launched in 1958.
Sometimes, the satellites collide. Such an event took place in February last year, when over Siberia Russian satellite crashed into the U.S..
Sometimes during space walks, astronauts, carrying out repair and maintenance of equipment lost tools. Such stories are almost as old as manned space missions. Edward White, the first American astronaut who went into space, lost a glove. During the Gemini 10 mission, Michael Collins lost near the ship camera. In the ongoing 15 years MIR space station mission thrown into space from garbage containers. For the multitude of lost items are also included pliers and tool boxes. Perhaps the most interesting object in orbit is drifting toothbrush.
Although at the beginning of space conquest of space was free from litter of terrestrial origin, the pioneers of flight were asking aware of the existence micrometeor, which constituted a threat to spacecraft. The only solution was then used covering the capsule surface landers and a protective outer layer of metal, which was their armor. Although the method was effective, require large financial outlays since the elevation of each additional pound to orbit cost and still costs a fortune.
The solution to this problem proposed by Fred Whipple. His design consisted of a thin film mounted just above the surface of the vessel. During a collision with mikrometeoryt film turns into a vapor plasma, which is sufficiently large dilution that before it reaches the proper plating of the vessel will no longer be harmless to him.
Garbage floating in space astronauts are increasingly threatened by staying in the International Space Station. If you trace the object, which may be on a collision course with the station, its inhabitants have to hide in a Russian Soyuz modules. Although the station may slightly modify its course, but to predict the exact trajectory of space debris is a fairly complicated task
Although the majority of space debris is burned in the Earth's atmosphere, large objects can reach the surface. For the first time such an unexpected situation occurred in advance on July 11, 1979. American space station Skylab was suddenly pushed out of orbit towards the earth as a result of unusually strong solar activity. Skylab came into the atmosphere where it broke up into smaller pieces. Fortunately, the fragments fell into the Indian ocean and unpopulated areas of Australia.
A great happiness, air passengers can speak Chilean airline, which narrowly escaped a collision with the falling spy satellite Russian 27 March 2007. The plane was flying over the Pacific Ocean, considered the safest place in the world to bring the old satellites due to the vast tracts of unpopulated space.
We know of one case of a person who was hit by a falling space junk. In 1997, the inhabitant of Oklahoma, Lottie Williams, dropped the object measuring 10 x 13 inches, which was later identified as a fragment of the fuel tank rocket Delta II was launched by the U.S. Army in 1996. It's hard to imagine, but a woman nothing happened.
From the very beginning of spaceflight, astronomers have wondered what would the effects of a collision with space junk bulky. The conclusions that emerged after these studies were very disturbing. Well, even if zaprzestalibyśmy launching objects into orbit, the space is the amount of scrap metal may be increased. This phenomenon is known as the Kessler Syndrome.
It turns out that the object of one kilogram of mass moving at 10 kilometers per second can destroy a ship of more than one thousand kilograms while creating a whole host of new high-mass fragments.
Tracking space junk is a very difficult occupation. In particular, objects with a diameter less than 1 cm are a major challenge for today's hearing. Monitoring is carried out using radar and telescopes. Such observations lead NASA, ESA and the Russian Space Agency. Americans created a special directory 19 000 objects, which in the case of a mistake could be considered a hostile missile.
According to conservative estimates of the threat posed by space junk will steadily increase. Over the next 50 years the number will quadruple in dangerous situations. To avoid collisions with space junk orbit will need to clean up.
One proposed solution is to use powerful laser beams fired in the direction of junk. Such devices were to be placed in orbit by the space shuttles. The mission bore the codename "Project Orion". Cosmic rays scrap laser beam pushed the theory had to move in the direction of Earth's atmosphere. After the Columbia space shuttle disaster, abandoned the project.
There is also the concept of creation of special robots that collect scrap space and relocate it to a central spacecraft.
A scientist from the University of Surrey in the UK suggests mounting at every newly-wystrzeliwanym satellite solar sails. The sun's rays striking the surface of the sail have such a tiny, but continuous acceleration. During the mission, will set sail in a position to facilitate the stay at the correct orbit. When life comes to an end device, directing the position of sail changes towards the Earth's satellite.
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No man knows the day nor the hour when the world will end.
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