British scientists point out that above Antarctica, the top of the fugitive layer in the atmosphere has fallen by about 8 kilometers in the past 40 years. Above Europe, similar observations have been made. Scientists believe that the atmosphere may continue to contract due to the greenhouse effect In the 21st century, carbon dioxide concentrations are expected to increase several times, which will shrink the space boundary by 20 kilometers, and continue to reduce the density of the thermal ionosphere in areas above the dissipative layer. The main meaning of this text is;. ['The shrinking space boundary will gradually increase.', 'The greenhouse effect will continue to shrink the atmosphere.', 'The top of the dissipative layer in the atmosphere will continue to decline.', 'Unexpected impact of shrinking atmosphere on satellites.']