Have you ever wondered whether aliens exist? And whether it’s possible to communicate with them? Read on to learn about how humans have attempted to connect with aliens and tell them about life on Earth.
Almost 50 years ago, space scientists from the National Aeronautics and Space Administration (NASA) launched the Pioneer 10 and 11 space probes, which carried small metal plaques that identified their time and place of origin, just in case they got into the hands of other space travellers or aliens.