Scientists offer new way to search for alien ships using gravitational detectors

American astrophysicists have come up with a new way to search for alien spaceships. It is recommended to use not only conventional radio telescopes, but also gravitational detectors.

Usually, most methods of searching for extraterrestrial civilizations are built around the detection of specific electromagnetic radiation. Scientists usually look for changes in the brightness of stars, or their special spectrum, or radio waves that differ from natural sources. American physicists are now actually proposing to expand the range of instruments used by using gravitational wave detectors.

Scientists explained that this method is based on the assumption that humanity is not alone in the universe, just that tools on the Earth are not yet perfect enough to find evidence of extraterrestrial life.

The idea proposed by the scientists assumes that a sufficiently advanced civilization is able to build a spaceship of enormous size and mass. Its acceleration can produce gravitational waves, which humanity has already learned to detect with detectors. In addition, such devices "scan" the entire sky at once, rather than a small part of it, like optical or radio telescopes.

So far, of course, this is just an idea. All calculations of American scientists are presented on the platform of preliminary publications arXiv. At first glance they are from the genre of fantasy, but in fact they do not violate the laws of physics, which means that it is technically possible to implement the idea.

Scientists note that the most sensitive devices to measure gravitational waves are interferometers LIGO, VIRGO and KAGRA, which can detect the alien spacecraft at a distance of more than 326,000 light years, that is, in an area three times the diameter of the Milky Way (about 106,000 light years).

But there is one problem. For these devices to detect gravitational waves, the hypothetical spacecraft must be ten times the mass of Jupiter and be able to move at up to 1/10 the speed of light. And at the same speed, an object the size of Mercury can be detected in a region with a radius of only 32 light years.