Today is October 3, 2017. What a significant event in the life of all mankind happened on October 4, 1957

Today is October 3, 2017. What a significant event in the life of all mankind happened on October 4, 1957. Remember what kind of event it was and what do you know about it?

On October 4, 1957, in our country, the world’s first artificial satellite of the Earth was launched into orbit. The mass of the satellite was 83.6 kg, diameter -58 cm. He flew 92 days, made 1440 revolutions around the Earth.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.