WE ARE ALONE; BUT WE NOT LONELY
CHAPTERS
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The Search for Extraterrestrial Life – From Religion to Science
Is human life unique in the Universe or is it ubiquitous? A profound and popular question -
Intelligence
There is no evidence that intelligence helps species to survive. There is some evidence against it. -
Where are They? - We Are Alone
Empirical evidence suggests that intelligent life is, at most, rare in the Universe. -
An Abundance of Worlds – An Abundance of Life
The Universe may have no other intelligent life but it is teeming with simpler life -- on billions of worlds. -
Exploring New Worlds - We Are Not Lonely
Exploration of potentially habitable worlds provides humankind with unlimited adventure and opportunities for discovery. -
Visiting Exoplanets: Interstellar Flight, A Bridge Too Far
Space is too big and our lives too short to reach the stars -- at least physically. -
Using Nature’s Telescope
Nature (and Einstein) has provided us with a scientific instrument capable seeing exoplanets - up close and personal. It is far out, but within our reach. -
Real Interstellar Exploration
The bridge too far of interstellar flight can be crossed virtually making real exploration possible. -
Comparative Astrobiology
The future holds the promise of discovering and studying life on many worlds. This will lead to a new field of comparative astrobiology, whose results (like those of comparative planetology and of a heliocentric solar system) are unpredictable, but certain to be far-reaching.
Appendix A - Interstellar Messaging
Appendix B - Mayr vs. Sagan, A Debate on Extraterrestrial Intelligence
Appendix C – The Search for Our Terrestrial Intelligence