Space Debris

Space Junk

we can call space debris as a Space Junk because space debris is human-made object in space which can't be use or no longer a useful function anymore so, it is wastes in the space.

Example

derelict spacecraft

most of derelict spacecraft and derelict equipment from ended mission or unsuccessful mission are being space debris

expired satellites

satellite bring many benefits and convenience to people but after they are old and expired there are 2 solution depend on how high the satellite was

-If it close to the earth, the engineer can make it burn up in the atmosphere.

-If it stay far from the earth, the engineer have to send it farther away to make sure it won't easily make any damage to other which still useable or crash on to earth. That mean these satellite will become space debris.

rocket after launch

The rocket is just a projectile for launching of spacecraft or other vehicle ,so after the launching is over, it will become a useless thing.

Fortunately, there is a reusable launch system now, that makes reducing launch cost and space debris because the rocket can be reuse for around 100 times.

waste fuel

Waste fuel are from rocket while launching

R-7

and

Sputnik 1

Around 60 years ago, people launched the 'Sputnik 1' which is the first satellite in the world. Although, the size of it is as small as beach ball but to launch it to the orbit must use big rocket name's 'R-7'

Moreover, after the launch of Sputnik 1 is over. It was used only 21 day before it was out of battery and become not only the first satellite but also the first space debris too.

The increasing of space debris

In the recent year, space debris has been increasing largely. Now the number of the junk in the space which are reported is about 47,000 pieces (not include the piece which smaller than 10 cm. that can't be detected)

The main reason of the increase is

collision and accident

Both the collision between used thing and the collision between debris make lot of space debris and what make it worse is that most of debris from collision is a small one which can't be detected.

the advancement of human

Because of the increasing of human's population, people have to invent new thing constantly to cope with people's need. In the same way, people find more benefit on using satellite or other thing in the space ,so they use it much than before. Although, the using is increasing but there is still on idea for solution of decrease the space debris.

The danger of space debris

Because space debris can still be in the orbit both by chance and uncontrollably. But finally, if they are dangerous for the space station and spaceship which are also in the same orbit because of its speed. The speed of debris that come from the interaction force of the orbit and the mass of it self. However, the result is these debris can do a lot of damage to the space station and spaceship.

The problem in decreasing of space debris.

The scientist always finds how to decrease these space debris but always face with the trouble ,for example , if they decrease them by sending something to gather them ,the thing which can gather them must be enormous and this enormous thing will become space debris instead, which means it also a not good solution as well. Hope we could find the solution soon.

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