UARS satellites will fall sooner than expected

According to NASA's announcement, the UARS satellite will enter the atmosphere on September 22, two days earlier than predicted.

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The UARS scientific satellite (Upper Atmosphere Research Satellite) was used to study the atmospheric height released in September 1991 from space shuttle Discoverry. This device is approximately the size of a bus weighing more than 6 tons, more than 10 meters long, operating in orbit 600 kilometers from Earth and a slope of 57 degrees. The value of the satellite is estimated at $ 750 million.

In 2005, NASA abandoned the satellite, saying it would deviate from the shuttle's orbit, but it was not. Satellites go on descending altitude and automatically go into sleep mode and collide with an object on the same trajectory. Experts say that the object is a piece of Soviet-era Kosmos-1275 satellite and this random collision caused the UARS satellite to break into 26 pieces and fall to Earth with a total weight of 532kg. The largest piece is the frame of the device weighing about 150kg.

According to the data on the afternoon of September 16, the altitude of UARS's orbit is from 225 to 250 kilometers. NASA announced that the time when UARS went into the atmosphere changed because from the beginning of the week before the Sun's activity increased markedly (causing the Earth's atmosphere to "expand" causing the resistance to increase).

As predicted, the satellite region may fall between 57 north latitude and 57 latitude south, because the orbit of the satellite is tilted 57 degrees. The fragments of the satellite will fall on a land of 800 kilometers in diameter. Perhaps it does not cause any terror and the damage caused (in terms of human life) is negligible. The Russian news agency, Rosblatt , thinks the broken plate will fall into the ocean, rather than down to Moscow and its surroundings, although Moscow's position is at 54 degrees 44 minutes north latitude.

NASA experts emphasized that since the launch of Earth's first artificial satellite in 1957 it has never been recorded that any piece of cosmic trash fell to Earth. However, NASA's US space control system (NORAD) closely monitors this situation and regularly predicts the time and place of falling devices.