Exoplanets are planets that orbit other stars outside our solar system. They are similar to the planets in our solar system, but vary greatly in size, composition and distance from their home star. The habitable zone is the area around a star where temperatures are in ranges where liquid water can exist on the surface of a planet - a basic requirement for life as we know it. The first exoplanet was detected in the 1990s. In recent years, the number of detections have increased exponentially. On July 14, 2024, 6,911 exoplanets in 4,941 systems were known. This shows that it is normal for stars to have planets. When detecting exoplanets, the luminosity of a star is measured over time. If this luminosity decreases cyclically, it can be that a planet is passing in front of the star or orbiting it. This is a very interesting moment for science and ideally, the JWST, the most modern telescope in the world, can take a look into the planet's atmosphere in order to analyze it in more detail. This moment is the optimal moment for sending a signal from this planet to a potential observer. The ideal moment for observations and, as an observer, the ideal moment to attract attention. If you look at the earth from the outside as it passes in front of the sun, you can see that all the colors of the light lose intensity due to the partial occultation of the star. If the company's proposed transmitter were to be pointed at a distant observer from Earth during this transit, the observer would see an unidentifiable sudden increase in the middle of the color spectrum, at green. If you look at this light more closely, you will see that it is alternately polarized along two axes. These two states represent the zeros and ones of the transmitted data signal.