In recent weeks, Dutch citizens have announced that they have heard strange noises from the sky. Martin Mastenbroek from Pijnacker, in the Dutch province of South Holland, was at home on the evening of January 10 when he suddenly heard a very strange sound.

"It sounded like a trumpet", - recalls. "It lasted about five seconds. It really went from outside. My girlfriend also heard it. "

Residents of other cities (Bleiswijk, Moordrecht, Lichtenvoorde, Beek, Gouda, Almere and Heerlen) said on social networks that they had also heard these strange trumpet sounds.

One of Gouda's residents managed to record sound on camera (see below). Another entry was made on Facebook by the user "Jeff AFCA", who was in Almere at the time.

The week before, on the evening of January 3, people living in Casablanca, Agadir, Zangir, and other Moroccan cities had heard similar sounds coming from heaven. Several of them were recorded and broadcast on YouTube:

The next day, January 4, the English and YouTube user "Stevie B" recorded the same sound in Bristol, southwest England.

There are many theories explaining the origin of this phenomenon. It is possible that the sounds are caused by some kind of transmission of low frequency radio waves. Usually we are unable to hear them, but in the context of changes in our surroundings and, more broadly, in the environment of space, they can react with other electromagnetic factors - on and around the planet, and amplify and transform sound waves.

Although no one knows exactly what sounds about sounds, they are probably intertwined and together they represent a new natural phenomenon. Apparently not quite new. There are ancient records of such sounds, and they are described as the call of the trumpets, the groaning, the screech of the metal, the celestial loser.