Alien or natural: strange sounds and signs found in space

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There is a creepy silence shadow in space because the sound does not travel in space but the space is not quiet. Almost all the objects of space emit radio signals that cannot be heard by the ears of human beings, which are taken by special instruments. Since the discovery of radio signals, these instruments have acquired many signs and sounds coming from space. In the last half-century, there has been an increase in the occurrence of these signals in the effort of humans to search the Earth for external intelligence (SETI). We will look at some of these important and unsolved events.

Wow! Signal

On August 15, 1977, the Big EAR telescope of Ohio State University detected a 72-second-long signal coming from about 200 light-years away. Astrophysicist Jerry Ehman made 6EQUJ5 a circle of red color in this sign indicating an artificial deviation in the electromagnetic spectrum, he wow! Wrote it Several concepts were presented to explain this signal. This signal was received only once and till now it is the best candidate for a signal sent by an Alien civilization.

Update :

Recently, a team of researchers collaborated with the CPS (Center of Planetary Science) to wow! The mysteries of Hint have been solved. Antonio Paris, the head of the researchers, described his theories in a paper published in the Journal of the Washington Academy of Science. His report suggests that the signal came from a comet. wow! The signal frequency was recorded to be 1420 MHz which is the same as the emission frequency of ordinary hydrogen gas. A direct explanation of this came to light last year when a team of CPS researchers suggested that hydrogen clouds on comets also transmit similar signals. Wow! We could not get the signal again because comets are moving at high speed.

The day the Big Year received this signal, exactly that day two comets were present in the same part of the sky. This comet 266P / Christensen and 335P / Gibbs were not discovered then. The researchers got a chance to test their idea when both comets appeared in the sky from November 2016 to February 2017. This team did the test and in our paper said that we got the radio signal from 266P / Christensen. Matched the signal. We have combined the radio signals of the other three comets to match the signal received 40 years ago. They have received almost similar radio signal results from all comets. Researchers said they certainly cannot say that Wow! The signal was originated by Comet 266P / Christensen but they can say with relative confidence that this signal was generated by the comet itself, which is a natural phenomenon.

Credit: The Center for Planetary Science (CPS)
Big Ear Radio Observatory and North American Astrophysical Observatory (NAAPO)

Radio Source SHGB02 + 14A

The second-largest candidate for earthly extraterrestrial civilization was found in March 2003 when a peculiar radio signal was detected at a frequency three times that of the 1420MHz frequency for one minute. According to some scientists, this sign is not an alien signal because it is a weak signal and originated from the middle of Pisces and Aries which has no visible star and the frequency of this sign is of a planet whose rotation speed is 40 times more than Earth. Will be.

Fast Radio Bursts

They are also called FRBs, which are such mysterious signs of space that are taken for a few milliseconds by radio telescopes, they are also called astronomical whistles. These signs, despite being a few milliseconds, have energy comparable to the energy produced by the Sun throughout the day. It is believed that there are 2000 FRBs every day but after the first FRB found in 2007, only 17 FRBs have been seen so far. The source of these powerful radio signals is unknown, but it is believed that they may be generated by a magnetar or two colliding black holes. Magnates are neutron stars with extremely magnetic fields.

Singing comets

The space researcher Rosetta (Rosetta), launched in 2004, traveled 6.4 billion km to reach a giant Dhumketu 67P / Churumov-Gerasimenko in August 2014. Arriving at a distance of 100 km from this comet, Rosetta heard a "strange song" coming from the surface of this comet. According to one concept, this sound is produced by the emission of uncharged particles emitted by a comet and the change in ion by the magnetic field of the comet of these particles.

Sound of Saturn

The Cassini spacecraft, orbiting Saturn in orbit for 13 years, found radio waves of changing frequency and time similar to the Eerie sound in 2002. All planets produce radio signals and scientists believe that this strange sound originates from the polaroid near Saturn's pole, which is similar to the radio signals generated by the Earth's polar light.