Related to Is there life out there? (2014)
Two years ago the description of the Universe was changed from billions of stars in each of billions of galaxies to billions of planets in each of billions of galaxies. The probability of finding intelligent life out there looks like a certainty and however improbable life is, it looks as if we will find it sooner rather than later. How will it change our world?
Dr Terrence Kee discusses the possibility that life could have first traveled to Earth on an asteroid.