This is not a drill: SETI Is Investigating an Extraterrestrial Signal From Deep Space, there far more advanced than ours.
An international team of scientists from the Search For Extraterrestrial Intelligence (SETI) are investigating mysterious signal spikes emitting from a 6.3 billion year-old star in the constellation Hercules–95 light years away from Earth. The implications are extraordinary and point to the possibility of a civilization far more advanced than our own.
The unusual signal was originally detected on May 15, 2015 by the Russian Academy of Science-operated RATAN-600 radio telescope in Zelenchukskaya, Russia but was kept secret from the international community. Interstellar space reporter Paul Gilster broke the story after the researchers quietly circulated a paper announcing the detection of “a strong signal in the direction of HD164595.”
The mysterious star’s designation is HD164595 and it’s considered to be sun-like in nature with a nearly identical metallic composition to our own star. So far, a single Neptune-like (but warmer) planet has been discovered in its orbit–HD 164595 b. But as Gilster explained, “there could, of course, be other planets still undetected in this system.”
The signal conceivably fits the profile for an intentional transmission from an extraterrestrial source. In any case, the blip is interesting enough to merit discussion by those who specialize in the search for extraterrestrial intelligence, or SETI.
The signal’s strength indicates that if it in-fact came from a isotropic beacon, the power source would have to be built by a Kardashev Type II civilization (The Kardashev scale is used to determine the progress of a civilization’s technological development by measuring how much energy was used to transmit an interstellar message.) An ‘Isotropic’ beacon means a communication source emitting a signal with equal power in all directions while promoting signal strength throughout travel.
In his acclaimed work “Transmission of Information by Extraterrestrial Civilizations,” Soviet Astronomer Nikolai Kardashev explained that a Type II civilization would be able to harness the energy of their entire host star. The most common hypothetical example of this would be a Dyson Sphere–which is a massive artificial structure that could completely encapsulate a star and transfer the energy to a nearby planet.
Basically, if the signal was beamed out into the galaxy without aim or direction, that would require an enormous amount of power to actually be detected. But what if the signal was beamed specifically at our solar system? Well, that would require less energy and could indicate the presence of a Kardashev Type I civilization–meaning that it could be a highly-technological, contemporary society that harnesses the solar energy emitted by its local star, much like our planet does with solar panels. This particular civilization’s social structure is theorized to be completely globalized and interconnected.
The signal is provocative enough that the RATAN-600 researchers are calling for permanent monitoring of this target. And that’s exactly what is transpiring. As of last night, the SETI institute is diverting its Allen Telescope Array in northern California to investigate while their counterparts at METI International (Messaging Extraterrestrial Intelligence) will utilize Panama’s Boquete Optical Observatory.
A SETI committee meeting will discuss this finding at the 67th International Astronautical Congress in Guadalajara, Mexico, on September 27.
We can’t claim the detection of an extraterrestrial civilization from this observation. What we can say is that the signal is interesting and merits further scrutiny.