Of all the sources of aerosol formation caused by the launch of terrestrial objects into space, the most powerful is the exhaust of combustion products by engines of various stages of launch vehicles, which use dozens of times more fuel than ships to place ships into orbit. May 15, 1987 a new step was made in space exploration. On this day, the first flight tests of the new universal launch vehicle Energia were conducted at the Baikonur Cosmodrome. Its mass is more than 2000 tons, mainly due to the fuel, which ensures that more than one hundred tons of cargo is put into orbit. Thus, already at the beginning of the flight of the spacecraft immediately after launch and before entering the orbit (in just 100-120 seconds), a huge amount of aerosols, amounting to hundreds and thousands of tons, is generated. Calculations show that with the launch of 1000 powerful rockets with a payload of 300 tons each, 6-9 million tons of rocket fuel combustion products will be ejected. This is less than industrial emissions, but nevertheless, now we are talking about the pollution of space from the Earth. In assessing this pollution, it should also be taken into account that there are already over six thousand different objects already in orbits — the Earth’s messengers (active and spent satellites, spacecraft, radomes, final rocket stages, etc.).

On February 7, 1991, the Salyut-7 - Kosmos-1686 orbital complex ceased to exist. In the dense layers of the Earth’s atmosphere, it turned into a shapeless mass of burning fragments. Then there was a dispersion of unburned remnants of the structures of the complex, condensation and desublimation of vapors formed after the combustion of the main mass of the fragments. As a result, aerosols of terrestrial origin delivered from space. Not all mass of the complex remained in the atmosphere: out of 40 tons, one and a half tons of debris reached the earth's surface. Fortunately, a peculiar hail of debris struck unpopulated mountainous areas of Argentina. Aerosols of terrestrial origin, accompanying the flight of spacecraft, are able to pollute the outer surface of the ship, including optical instruments. According to the Apollo-7 spacecraft astronauts, sources of pollution are the fuel of the starting engines and particles that arise after the sublimation of silicone rubber seals of portholes. The size of aerosol particles deposited on the windows of three-layer quartz glasses of the descent vehicle of the Soyuz-18 spacecraft is from 5 to 70 microns. Watch live couples sex cams live sex shows featuring couples who dare to be on cam, vulnerable and eager to have sex on cam, here's a chance at Camevil.com to get off along with them. Randy and horny couples performing free cam shows can be clicked on during their live webcam shows as a part of an unforgettable performance.