Where do mysterious radio waves come from?

1924 In August, the US Navy captured a strange radio wave. Dipid, a professor of astronomy at amherst University? Dr. Ted thinks that this kind of radio wave may be "a signal from cosmic people". This strange radio wave still keeps appearing. It is found that the radio wave pulse launched into the air receives two echoes in the same time interval. One of them is reflected from the ionosphere of the atmosphere; The other one reflected from nowhere.

It is estimated that another echo may be reflected from outside the ionosphere and inside the lunar orbit. An astronomer in Britain estimated that the object reflecting the echo might be a spaceship launched by a planet in Mu Fu constellation. However, no one knows what it is.

From 1960 to 1976, in order to capture and study all kinds of strange radio waves, the United States conducted a two-stage "Ozma Plan". During the implementation of the second "Ozma" project, 650 sun-like stars near the Earth were observed for nearly four years by using the largest and most sophisticated radio telescope in the world, and the abnormal information of more than ten stars was received as a result. However, it is still uncertain whether these messages are sent by intelligent creatures or the noise of natural radio waves.

Since 1985, the United States has implemented the "Tammy Plan", which uses 840 radio channels to scan cosmic objects, and its scale is equivalent to 1 minute completion 1 10,000 "Ozma Plans". 1992, the United States implemented the "Phoenix Project" to search for intelligent life in outer space, using the largest astronomical telescope and radio telescope at that time to search for radio signals of different wavelengths emitted by various celestial bodies in the universe, but there is still no news.