there is no evidence or credible scientific basis to suggest that alien civilizations exist or that they have developed faster-than-light (FTL) communication capabilities. The possibility of alien civilizations and their communication methods remain speculative and fall within the realm of science fiction.
The theory of special relativity, proposed by Albert Einstein, suggests that nothing with mass can travel at or faster than the speed of light in a vacuum (c, approximately 299,792,458 meters per second). This theory has been extensively tested and confirmed by experimental evidence, making it a fundamental principle of modern physics.
Sending messages across interplanetary distances within the constraints of special relativity presents significant challenges. In practice, communication between spacecraft and Earth, for example, is achieved using radio waves, which travel at the speed of light. Therefore, even with current technology, there is a delay in communication when signals travel to and from distant objects in our solar system or beyond.
Hypothetically, if there were advanced alien civilizations with the ability to communicate across vast interstellar distances, they would likely face the same constraints imposed by the speed of light. This means that their communications would also experience significant time delays, making real-time conversations over long distances difficult.
It's worth noting that science and technology are constantly evolving, and our understanding of the universe may change over time. As we continue to explore and learn more about the cosmos, new discoveries could potentially lead to revolutionary breakthroughs in physics and communication. However, as of now, the concept of FTL communication remains speculative and has not been supported by scientific evidence or observation.