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150
Where does the archetypal image of the 'Grey' alien come from?
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115
How does David Lightman in WarGames manage to hack a computer by dialing a number?
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104
How do you prove you're from the future?
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99
Are all instances of trolls turning to stone ultimately references back to Tolkien?
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84
In Back to the Future, why was the speed 88 miles per hour?
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67
What is the next dominant species?
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44
Why is the name “Rigel”, and especially “Rigel VII”, used in multiple universes?
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29
What is Babylon 5 cylinder's diameter and gravity on each deck?
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27
In Starcraft, are the Protoss inspired by anything special?
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26
What was the point of bringing Enterprise to the surface of a planet?
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22
Why have most Superhero movies ditched the “Secret Identity”?
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21
Why do calculations need to be made before jumping into hyperspace?
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21
How big can a space empire get?
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20
What would benevolent aliens look like for first contact?
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18
How could two species (human and halfling) live side by side in the same society, without conscious integration of the two?
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18
Space station mass per person
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17
Why do Vorlons live in special gaseous rooms in Babylon 5, given that Kosh can be seen walking around the station with ease?
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17
Which Sci-Fi or Fantasy work introduced the idea of “Infinite Time Loop”?
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17
Is there any math conjecture that would cause a lot of damage if disproven?
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16
What was the first SciFi work that referred to Pluto as NOT a planet?
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15
Has Neil Gaiman's Sandman ever appeared in a Justice League comic?
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15
Could fictional species benefit from limited inbreeding?
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15
What methods of transportation would develop in a Stone Age society in a forest world?
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14
Is there a significant reason why people addicted to melange have blue eyes?
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14
In the Asterix series, Why didn't the Romans just address the magic potion problem head on?
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14
Post-apocalyptic movie about matriarchal society
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14
How did Roderick Burgess capture Dream instead of Death?
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14
Newton’s axioms in Star Wars
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13
Is there an in-universe explanation for Star Trek-era designs paralleling 20th century fashions?
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13
Name of short story told from perspective of mechanical alien?
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