Don Brownlee Life Quotations

This comet formed at very edge of the solar system ... out by pluto ... and spent all its lifetime out there until recently it came into the inner part of the solar system, where we could sample it.

What we want to know is how organic molecules actually form in comets and whether they helped deliver organic material to the Earth before life began.

Life is fairly easy to create, but I think planets like Earth are going to be rare.