The planet or traces of the presence of life on it, according to astronomers, can be hidden from the most advanced telescopes by blinding them with lasers with a power of several tens or hundreds of megawatts.
The founder of planetary science David Kipping and his colleague Alex Teachy believe that advanced civilizations can remain “invisible” to observers on earth if they illuminate their planet with a laser device with a low power - 30 megawatts.
In recent years, the Kepler orbiting telescope, the HARPS instrument and a number of other devices have discovered many exoplanets, several dozen of which are inside the life zone and have approximately the size of the Earth. Signs of the existence of intelligent or unreasonable life have not yet been found on any of them. Nevertheless, astronomers talk about possible hints of the existence of aliens, since in October 2015, scientists discovered unusual fluctuations in the constellation Cygnus, which cannot be explained by natural processes. This means they can testify to the presence of a highly developed civilization.
Kipping and Teachy believe that aliens can easily hide their planet from Kepler, using a special laser installation that will shine towards the earth at the moment when their planet passes over the star's disk for observers in the solar system. Lasers will require about 30 megawatts of energy if the planet is hidden in the optical range and about 760 megawatts in all radiation ranges. Such systems can already be built on the ground. In addition, such systems can be used to "remove" data on the presence of microbes, organics and other signs of life from the spectrum of the planet.