The Vast Majority Of Terrestrial Species Are

Many Billions Of Years Will Elapse Before The Smallest, Youngest Stars Complete Their Nuclear Burning And Shrink Into White Dwarfs. But With Slow, Agonizing Finality Perpetual Night Will Surely Fall.

In The 1990s I Began To Study The Prospects That Life Could Spread From Mars To Earth Or Maybe Earth To Mars And That Maybe Life Began On Mars And Came To Earth, And That Idea Seemed To Have A Lot Of Traction And Is Now Accepted As Very Plausible.

Cancer Is Like Another Form Of Life. It's Closely Related To Healthy Life. A Healthy Body Is One Form Of Life. Cancer Is In A Way Nature's Experiment With Life.

The Temptation To Believe That The Universe Is The Product Of Some Sort Of Design, A Manifestation Of Subtle Aesthetic And Mathematical Judgment, Is Overwhelming. The Belief That There Is "something Behind It All" Is One That I Personally Share With, I Suspect, A Majority Of Physicists.

If We Do Discover More Than One Type Of Life On Earth, We Can Be Fairly Certain That The Universe Is Teeming With It, For It Would Be Inconceivable That Life Started Twice Here But Never On All The Other Earth-like Planets.