5 weird noises that science can't explain

Have you ever heard of a maddening buzz that thousands of people from around the world say they hear? And mysterious crashes with no apparent cause that have already scared many people? Or, about a sinister noise that sounds like an apocalyptic trumpet that has been heard in many countries? What about the sign known as "Wow!" That some believe was issued by some extraterrestrial civilization?

We here at Mega Curious have even talked about these phenomena, and do you know what they all have in common? Although there is much speculation about the possible causes, there is no definitive scientific explanation for any of them. And you know what? These examples we mentioned above are not the only strange noises that many people claim to have heard out there. Check out five of them below:

1 - Quacker

Named the strange noise above "quacker" was the - then - Soviets, and it was noticed by crew members from various submarines that passed through the Arctic and Antarctic. Discovered during the Cold War thanks to technology designed to pick up suspicious signals, it is said that such noise was only recorded when vessels were passing through certain places and that it resembled the frog's scratching.

At first, since both Soviets and Americans were doing their best to ensure that their submarines were not discovered by each other, such noise was thought to be generated by some detection technology. However, the quacker seemed to react to the boats as if trying to avoid them by dodging the sonar.

Moreover, as the noise speed was about 200 kilometers per hour, it was concluded at the time that the quacker could not be produced by another vessel. Strange noises disappeared in the 1980s, and while many theories emerged to explain their origins - ranging from super-secret military technologies to marine and even alien animals - the phenomenon was never fully explained.

2 - Slow Down

The above noise was first recorded by NOAA - the US National Oceanic and Atmospheric Administration - in the equatorial Pacific in the late 1990s and was called “slow down” because after every seven minutes slow sound decreases in frequency. .

Although slow down was detected at 15 ° S 115 ° O exactly, its origin remains unknown. One of the theories is that the noise is caused by Arctic ice moving over the earth, but scientists have not yet been able to determine whether this is really the origin of the strange sound.

3 - Bloop

Also detected by NOAA, “Bloop” was a noise recorded several times during the late 1990s about 1.7 thousand kilometers west of Chile, near 50 ° S 100 ° W. This mysterious noise was characterized by being ultra-low frequency and extremely powerful - as it could be picked up by sensors located over 5, 000 kilometers away - coming from a depth of 4, 300 meters.

Both nature and bloop characteristics can be compared to the sounds produced by marine animals. However, not even the blue whales, the largest living creatures on the planet, can reproduce this noise. Noise has never been detected again, and although the most widely accepted theory to explain the phenomenon is that it was generated by glacial earthquakes, bloop remains a mystery.

4 - UVB-76

This is the name of a mysterious shortwave radio station that broadcasts the monotonous signal you have just heard on the 4.625 kHz frequency for 24 hours a day since the 1980s. Each buzzing lasts 0.8 seconds and repeats - in average - 25 times per minute, with pauses of 1 to 1.3 seconds between each repetition before the cycle begins again.

Very occasionally, the signal is interrupted by Russian voice messages, and sometimes it is possible to hear what appear to be background conversations, suggesting that the signal is generated by a device positioned near an open microphone. The transmitter's location was not discovered until 1997, and it is located in Povarovo, Russia.

Signal transmission continues to this day, and no one has yet been able to explain what the humming and rare voice messages mean. One of the theories would be that it is a spy station or a channel maintained for the transmission of code messages sent by the Russian military.

5 - 52 Hertz Whale

The above sound, first recorded by a Woods Hole Oceanographic team in 1989, was attributed to a whale - described as the most solitary in the world - whose species has not been identified. What makes this noise so special is the fact that it is produced at the frequency of 52 Hz, that is, the vocalization of this mysterious individual is much higher than that of most whales, which usually range from 15 to 20 Hz.

In addition, although the lone whale's trajectory is known - it is detected every year in the Pacific Ocean from August to December, traveling north to the Aleutian Islands and Kodiakos Archipelago, and to the southern California coast -, their trajectory patterns and rhythm are not related to the displacements of other species. One possibility is that it is a unique animal, possibly a hybrid or malformed.