We May Not Be Alone In The Universe. Should We Reach Out?A conversation with an advanced alien species is likely to be simple and to take 1,000 years. It might also be dangerous. Key TakeawaysWe have sent messages into space before, hoping to reach out to any interstellar intelligences. Such a message is challenging to compose.Some argue that maybe it’s better not to send an intentional message at all.In any case, any message we send is likely to be a simple, “We’re here."