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Moon origin modeled

10.12.2020

The hypothesis of the origin of the Earth's satellite as a result of the collision of two planets was tested using a new algorithm.

British scientists believe that the Moon could have formed about 4,5 billion years ago as a result of a collision of the Earth with the hypothetical planet Theia.

Theia is a hypothetical planet that formed 4,6 billion years ago, like other planets in the solar system, which could have been similar in size to Mars. She is named after Theia, one of the Titanide sisters in ancient Greek mythology, the mother of Helios, Eos and Selene (the moon goddess).

Interest in impact theory has grown due to the recent discovery of heterogeneity in oxygen isotopes in lunar samples.

The scientists simulated the alleged collision between the proto-Earth and Theia and studied the effect of different rotation speeds of the hypothetical planet on the impact that forms the Moon.

It is emphasized that the conclusions are not the final proof of the origin of the Moon, however, they are an important step in understanding how the Earth's satellite could have formed.

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Breaking the record for the length of a quantum communication line 25.04.2022

Chinese scientists have set a new world record for the length of a quantum secure communication line. It was 102,2 km, beating the previous figure of 18 km.

True, in such a network, the transmission speed was very low - 0,54 bits per second, but still sufficient to encrypt text messages and phone calls at a distance of 30 km. The results of the work may eventually lead to the creation of a tamper-proof communication, since any attempt to listen to the quantum line can be instantly detected.

The same research team set the previous record. Now she has improved her network. The improvements allowed them to lengthen the line from 28,3 km to a record 102,2 km.

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