Artificial satellites

Artificial satellites are machines created by people launched into space and flying around Earth. These satellites help people predict the weather, monitor El Nino, broadcast television programs and perform some strategic military functions.

Artificial satellites are machines created by people launched into space and flying around Earth

But artificial satellites can reflect the rays not only of the setting sun, but of the Sun, which has already sat down for observers on the surface of the Earth. Naturally, nobody likes such a hindrance. Worse, some artificial satellites transmit information at radio frequencies that coincide with the frequency of satellite dish antennas that astronomers use to search for radio signals from space.

Therefore, astronomers love artificial satellites for the benefit they bring, and hate that they interfere with observations. And, trying not to lose heart, amateur astronomers observe with enthusiasm and photograph artificial satellites flying in the sky.

Hundreds of operating artificial satellites revolve around the Earth, as well as thousands of fragments of "space debris" - non-working artificial satellites, upper stages of rockets to launch satellites, fragments of broken and even exploded satellites and tiny particles of paint from satellites and rockets. Large satellites and fragments of space debris can be seen even with the naked eye (as they reflect sunlight).

Artificial satellites are moving too slowly for the meteor and too fast for comet. They are easily visible to the naked eye, so they are too bright (and too fast) for an asteroid. Sometimes a satellite can take a jet flying at high altitude. In this case, just look through the binoculars. If this is an airplane, then against the background of the night sky you will be able to distinguish the side lights or even the silhouette of the aircraft.

Artificial satellites of the Earth were launched by more than 60 different countries (as well as individual companies) with the help of both own carrier rockets and provided as launch services by other countries and interstate and private organizations. The world's first artificial satellite was launched in the USSR on October 4, 1957 (Sputnik-1). The second country that launched an artificial satellite was the United States on February 1, 1958 (Explorer-1). The following countries - Great Britain, Canada, Italy - launched their first artificial satellites in 1962, 1962, 1964 respectively, on American launchers.

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