Dyson Spheres Key to Find Alien Civilizations Higher on Kardashev Scale
Searching for intelligent life in the universe? Then look for their energy source. An update on the hunt for Dyson Spheres.
In June of 1960, astrophysicist Freeman Dyson published his paper Search for Artificial Stellar Sources of Infrared Radiation in the journal Science. In it he argued a way to detect intelligent life in the universe by finding their energy signature that would be created by, he presumed a highly advanced technology.
He wrote, “If extraterrestrial intelligent beings exist and have reached a high level of technical development, one byproduct of their energy metabolism is likely to be the large-scale conversion of starlight into far-infrared radiation.”
Dyson, who died one year ago this month at age 96, believed that an advanced technology would harness solar power from a star with an array of solar panels. He explained in a 2003 interview that he once described it as a biosphere, but since then this theory has been known as a Dyson Sphere.
Dr. Seth Shostak Sr. Astronomer at the SETI Institute explains, “If you’re looking for E.T., if you’re looking for intelligence elsewhere in the universe, you’ve got to figure there are societies out there that are way more advanced than we are, you know the universe has been around for a long time. And they may have constructed something like a Dyson Sphere, or more accurately a Dyson Swarm, or something we can see. And there have actually been searches for alien Dyson Spheres.”
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Harvard Professor Avi Loeb Says Universe Created in a Lab
One of the greatest mysteries of our universe is the question of what existed before the Big Bang and how our universe was created. Could it have been created in a lab by a higher form of intelligence—an extraterrestrial intelligence?
Scientists have studied for years the possibilities that may have created the Big Bang; how our universe was created. Now, Avi Loeb, Harvard Professor of Science and author of “extraterrestrial: The First Sign of Intelligent Life Beyond Earth,” proposes in his latest editorial for Scientific American that our universe may have been created in a lab.
Modern physics has a problem, we do not yet have a good understanding of how to unify quantum mechanics and gravity. If we did, we could in theory figure out how to create a “Big Bang.” This idea led professor Loeb to his theory.
“If we imagine a civilization that had science and technology for much more than a century like we did, then they could have arrived at a theory that unifies quantum mechanics and gravity, and if they figure out how the Big Bang can be created perhaps they could also produce it themselves in the laboratory,” Loeb said. “And if that happens then there is a very interesting possibility, just like in nature, for example, a chick comes out of an egg, becomes a chicken and lays another egg, and so forth. You can imagine a universe like ours giving birth to an intelligent civilization that can create a universe like the one that made it.”
Imagine if different civilizations were given a letter grade; professor Loeb puts us at a Grade C, while the more advanced civilizations have higher grades.
“One can, in principle, classify civilizations in the universe into different classes. Type C civilization is similar to ours where we rely on the sun to keep us alive and we are using our environment the way it was provided to us. But then one can imagine a civilization Type B, which is not dependent on the star next to which it was born, in. fact it can create a habitat that supports its life far away from the star,” Loeb said.
“You can imagine them creating a platform where a civilization can live happily, using nuclear energy supplied to it from nuclear reactors and not from the star that it happens to be born next to, that would be Type B. Then Type A civilizations would be those that are capable of recreating the astrophysical environment that they live in, in particular, the universe as a whole. So, creating a universe in the laboratory implies that you’re at the top of the class of civilizations in the universe. We haven’t reached that yet because we don’t have a quantum theory of gravity.”
