According to scientific research, most space waste or obsolete parts usually fall into the sea.
How high is the risk of falling space debris?
The “natural orbit” of the ISS battery mechanism in question was minus 51.6 degrees south, 51.6 degrees north. What is meant by the concept of “natural orbit” is that the object moves uncontrolled, that is, it is not guided by a computer or human. Unlike satellites or spacecraft that leave the ISS It is not possible to move or direct old batteries remotely. For this reason, it is unclear whether the objects in question will break up in the air or hit the ground. It is difficult to make a definitive prediction.
So, do these objects pose a danger to people? Can precautions be taken against the possibility of space debris falling?
DW asked this question to Germany’s Civil Defense and Disaster Relief Agency. It is difficult to take precautions against space debris. Stating Institution, The danger to human life is minimalHe noted that objects expected to enter the atmosphere are closely monitored.
According to the data of the European Space Agency (ESA), waste circulating uncontrollably in space enters the atmosphere almost every week.
However, there has been an increase in recorded cases related to space waste since the 1960s. Between 1960 and 2000, approximately 500 pieces reached the earth’s surface per year. There has been a significant increase in their number in recent years. According to ESA’s data In 2022, approximately 2,500 objects reached the earth from space.
What kind of space debris falls to the ground?
Garbage in space generally consists of capsules on multi-storey missiles, parts separated from the explosion caused by ignition during launch, or parts of fuel compartments such as batteries. Satellites sent into space and materials left over from satellite tests also increasingly lead to the presence of waste in space.
The ones that cause the most waste residue or scrap are satellites. uThe satellites circulate in orbits ranging from the lowest orbital distance to the highest, 2 thousand kilometers. These objects are generally used for observation of the earth.
The increase in space waste is not only caused by accidents and collisions. Some parts of the vehicles sent into space are left in space because they are no longer needed after a while or they have reached the end of their life.
Is space debris toxic?
Space debris may also contain toxic substances. Space Archaeologist and Space Waste Expert Alice Gorman says that some fuels of spacecraft are toxic and gives hydrazine as an example. Noting that beryllium and magnesium are also used, Gorman states that they are considered as alloys and says, “Especially beryllium is quite disturbing.”
Since space waste often lands in the seas, many experts have been concerned about the pollution of the seas for a long time. According to Gorman, unfortunately, this area has not been fully researched yet, so the impact of space waste on the seas is not fully known.
What is the risk of space debris impact?
According to experts’ calculations The probability of being struck by lightning is 65 thousand times higher than the probability of an object from space hitting our head. The probability of having an accident at home is 1.5 million times higher than that. The probability of being killed by a meteorite is many times higher than being injured by a piece falling from space.
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