Scientists have relied on radio waves for searching for signals of extra-terrestrial life for many years.   A centre in Ireland has a telescope that could pick up the signals if they ever arrive. For more on this we were joined by space commentator Leo Enright.

Listen and subscribe to Newstalk Breakfast on Apple Podcasts or Spotify.

Download, listen and subscribe on the Newstalk App.

You can also listen to Newstalk live on newstalk.com or on Alexa, by adding the Newstalk skill and asking: 'Alexa, play Newstalk'.