Table of Contents
Introduction xi
Part I Aliens in History 1
Aliens in Ancient Greece 3
World Turned Upside Down 11
The System of the World 19
Darwin among the Aliens 26
Einstein's Sky 33
Aliens in the Space Age 43
Part II It's Life, Jim, But Not As We Know It 53
What Do Xenomorphs from Alien and Na'vi from Avatar Have in Common? 55
Lost in Space: Are Silicon Spiders a Thing? 62
Why Do the Heptapods in Arrival Look Like Octopuses? 67
Dune and Pandora: When Does the Ecology of an Alien World Become a Character? 72
Is Jar Jar Binks to Blame for So Few Aquatic Aliens? 79
Would Luke Skywalker Really Have Been Human? 86
What Do Aliens in DCs Superman and Marvel's Avengers Have in Common? 91
Why Might Our Galaxy Be Full of Ewoks? 97
Part III Alien Worlds 101
Aliens on Our Moon: What Was America's Great Moon Hoax? 103
Spaceballs: How Do Aliens Avoid Life's Big Obstacles? 112
How Does Alien Migration Happen in Star Wars and Star Trek? 118
How Would the Engineers in Prometheus Know Which Star Systems to Colonize? 123
Forbidden Planet: How Weird Are Alien Worlds? 127
Cloud City: Is There Life on Gas Giants? 132
The Wandering Earth: Are There Rogue Alien Worlds? 137
Part IV Alien Invasion 143
Are the Ancient Aliens in Assassin's Creed Possible? 145
Foundation and Mandalorian: How Might Alien Empires Grow? 153
Groot, Spock, or Bug: What Might Aliens Look Like? 160
Time Lords, Vulcans, and Kryptonians: Are Clever Aliens Violent? 164
Close Encounters: Was 'Oumuamua an Alien Contact Event? 171
Cloverfield and Contact: What Is the Most Likely Form of Alien Contact? 178
John Was Trying to Contact Aliens: Are We Alone? 182
Index 191