Science we are repeatedly told is the most reliable form of knowledge about the world because it is based on testable hypotheses. Religion by contrast is based on faith. The term 'doubting Thomas' well illustrates the difference.

Science we are repeatedly told is the most reliable form of knowledge about the world because it is based on testable hypotheses. Religion by contrast is based on faith. The term 'doubting Thomas' well illustrates the difference.

Man-made computers are limited in their performance by finite processing speed and memory. So too the cosmic computer is limited in power by its age and the finite speed of light.

Man-made computers are limited in their performance by finite processing speed and memory. So too the cosmic computer is limited in power by its age and the finite speed of light.

Should we find a second form of life right here on our doorstep we could be confident that life is a truly cosmic phenomenon. If so there may well be sentient beings somewhere in the galaxy wondering as do we if they are not alone in the universe.

Should we find a second form of life right here on our doorstep we could be confident that life is a truly cosmic phenomenon. If so there may well be sentient beings somewhere in the galaxy wondering as do we if they are not alone in the universe.

Perhaps the best motivation for going to Mars is political. It is obvious that no single nation currently has either the will or the resources to do it alone but a consortium of nations and space agencies could achieve it within 20 years.

Perhaps the best motivation for going to Mars is political. It is obvious that no single nation currently has either the will or the resources to do it alone but a consortium of nations and space agencies could achieve it within 20 years.

The way life manages information involves a logical structure that differs fundamentally from mere complex chemistry. Therefore chemistry alone will not explain life's origin any more than a study of silicon copper and plastic will explain how a computer can execute a program.

The way life manages information involves a logical structure that differs fundamentally from mere complex chemistry. Therefore chemistry alone will not explain life's origin any more than a study of silicon copper and plastic will explain how a computer can execute a program.