Even if aliens exist, are intelligent like humans and interested in making contact with us, what are the chances they'll be close enough for us to hear them screaming their presence into the cosmos?
A new study argues we should search for microbial life rather than human-like aliens.
We asked astronomers: are we alone in the Universe? The answer was surprisingly consistent.
The Conversation33.5 MB (download)
'I think that we will discover life outside of Earth in my lifetime. If not that, then in your lifetime,' one astronomer told us.
We continue to search for intelligent life elsewhere in the universe. But if we find ET there are those who question whether we should make contact or not.