Extraterrestrial communication refers to the methods and technologies used to send and receive messages from intelligent life beyond Earth. Scientists and researchers explore various ways to detect signals from space, such as using radio telescopes to listen for patterns that might indicate the presence of alien civilizations. One of the most famous projects in this field is the SETI (Search for Extraterrestrial Intelligence), which aims to find signals from other planets. Additionally, scientists consider sending messages into space, like the Golden Record aboard the Voyager spacecraft, which contains information about humanity and our planet in hopes of reaching other intelligent beings.