Abstract. complex and serious consequences are caused by

Abstract.   In this age
of science and technology Space junk is increasing enormously in the result of
human activities in space . This does not leave those space orbits clean for
upcoming space crafts or space walks. One proposed way of reducing this debris
is the use of orbital lasers. For faster reduction four lasers are used. Laser being cheaper from others ways
like space ballons or pods and tungsten microdust etc. Cascading effect  of 
trash bring forth more but smaller trash . So, by the time cascaded
increase and at the same time laser reduction would be analyzed. Effective
reduction would be attained by using fours laser beams at a time.

Keywords: Debris(Junk or trash), Ramification(serious
results ). Reduction (to decrease)

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1   Introduction

Remnant of manmade satellites and other space crafts which are sent
above in space in order to get space images or for communication etc remains there.
These human devised machines do not last forever. Like everything they have to
decay and eventually come to an end. These small fragments separated either by
erosional, colloidal or extinction, disintegration, defunct activities of space
crafts, remain in orbits along with meteorites. Some remain there in space and
some ultimately fall back to earth and envelops its atmosphere. If not treated
appropriately even a minute particle of junk with rapid speed can play havoc.
It is hazardous not only in satellite collision but also for Earth-living
planet –environment. According to European Space Agency estimation “about 75
per cent of large objects launched into space have already re-entered Earth’s
atmosphere”. Hazardous, complex and serious consequences are caused by space
junk and can perform different harmful activities on atmospheric pollution or
space crafts collisional disasters.

Man has gone very advance in technology for his benefits , desires
and needs but this has left many consequences one of which is that our space is
littered. Here question arise for its reduction .There should be some ways to
sweep out the space trash just as we sweep our earth trash for the sake of our
health . Likewise for out more betterment , in order to send more space bodies
, there should space enough for those space bodies .So agent are being declared
as small particles of junk(not the huge ones).


1.1 Collision with
space crafts   

there are many satellites revolving around   our earth in space , every country is sending
its own space crafts. Hence there are always chances of collision , not of
these space bodies but with space trash coming from somewhere. Mostly the
defunct pieces of trash have been tracked and space craft takes another
direction. But we have some trash pieces   enough
small that they cannot be seen if seen they cannot be tracked. Speed increases
in spaces and even a small particle of having size in millimeters to
centimeters can cause some disaster to space shuttles. A small crater can be
made in machine by junk fragment which demands reparing off course. So
reduction of defunct fragment will overcome these disasters too.


           1.2 Inter
particles Collision

Despite of  striking with satellites these particles may
also collide with one another . In the result of this collision they create
cascading effect by tearing apart one another and generating more fragments
which will be relatively smaller in size . Kesseler Syndrome –one of very
popular effect proposed by a NASA scientist –  is
that “density of objects in low
earth orbit (LEO) is high enough
that collisions between objects could cause a cascade where each collision
generates space debris that increases the likelihood of further
collisions” also describe same collision effect ,
causes, and consequences.  

2. Background and Literature  

Review Since the launch of
sputnik I space is being littered increasingly and it will grow more. Many junk
disposal and reduction mechanisms, techniques and machines are being designed
but none is implemented so far. Their installment need time , they are costly
and some demand some more serious analysis. One way is to deorbit junk
somewhere else where satellites could not be installed or debris are pulled by
exertion of some force to turn its way.                                                                                                                                                                                                                                                          2.1 Space Balloon
: Despite of using laser concept of space is put forward in which a thin space balloon
thrown in space and space junk stick to it and gradually being dragged by it
towards earth.                                                                                                                                                                                                                                                            2.2 CLEANSPACE ONE
: It is a small satellite made by a swiss person . It have sticky jellyfish
like tentacles which grabs those stray fragments and eventually throw them
towards earth by pulling them.    .                                                                                                                                                                                                                               2.3 Space Pods
: Space pods are also made which use power of nuclear energy to destroy space
trash. .                                                                                                                                                                                                                                                                 2.4 Tungsten Microdust: This is launched in low earth orbit , slowing down debris speed . But
this is not used because of its harmful effects.                                       And many other ways are devised as above.                                                                                                                                                                                                                            2.5  LASER
ORBITAL DEBRIS REMOVAL :  Use of laser is rather cheap and easy . Thus
this is considered so far the best way .It has been analyzed by Cr Hips in his
paper with complete mathematics , mechanism , techs and tools . This system
also prevent further collision as described in kesseler syndrome.        But here some functionality is being
achieved by using four laser system for each direction  . They will remain around orbit an prevent
neighbouring collision and reduce them . But disadvantage of this that it will
get expensive too due to four installments of one system.                                                                                                                                 But this system had never been modeled
using netlogo with respect to collision reduction and analysis with time

3   Research Question

Goal is to effectively increase space littering by improvising
existing proposed methodologies. As this cannot be tested in reality for now so
some important assumptions would be taken such as moving or colliding state of
debris , its regular increase over time and then its decrease .using proposed
method . Likewise cascading effect is assumed .

4   Conclusion

In the nutshell as earth is ours , space is ours too . As earth
demands to be cleaned so the space does. This model signifies this problem and
its reduction by using laser , four instead of one . This have useful effect on
debris and reduce it faster  and further
collision are proactively handled . This is feasible in launching but cost
might be high . This throw of  debris to
earth can further be considered harmful and be studied. Besides further research
can also be made by affiliating or incorporating laser in other reduction ways.