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Short story about a scientist trying to prove faster-than-light travel with a billiard ball

story-identification short-stories asked Jan 9, 2015 at 6:14

scifi.stackexchange.com

27 votes

Did Snape's wand change allegiance when Harry, Ron, and Hermione knocked him out?

harry-potter severus-snape wandlore asked Jan 13, 2015 at 14:13

scifi.stackexchange.com

20 votes

Was Harry supposed to watch Snape kill Dumbledore?

harry-potter asked Feb 11, 2015 at 4:08

scifi.stackexchange.com

18 votes

Did the Elder Wand try to kill Harry?

harry-potter deathly-hallows asked Jan 29, 2015 at 11:38

scifi.stackexchange.com

16 votes

How can my accidental time travelers determine the year using star/stars?

reality-check astronomy asked Feb 5, 2015 at 14:21

worldbuilding.stackexchange.com

12 votes

Energy weapons conventional removable cartidge/ammo or not?

reality-check asked Dec 17, 2014 at 7:18

worldbuilding.stackexchange.com

10 votes

Guns and Tasers (lethal and non-lethal) - should we combine them (as a weapon for Police)?

reality-check weapon-design asked Dec 13, 2014 at 2:36

worldbuilding.stackexchange.com

7 votes

If the Goa'uld exile you on an unknown planet with a Stargate, can you escape?

stargate stargate-sg1 asked Nov 25, 2014 at 9:09

scifi.stackexchange.com

7 votes

Is it impossible for Earth Stargate be modded to dial all Stargates?

stargate stargate-sg1 stargate-atlantis stargate-universe asked Nov 27, 2014 at 11:16

scifi.stackexchange.com

6 votes

Why not transfer the people of Taranis to the other side of planet?

stargate stargate-atlantis asked Nov 25, 2014 at 5:29

scifi.stackexchange.com

Top Answers

How does the Earth move in the sky as seen from the Moon?

astronomy.stackexchange.com

How fast could a civilization advance if given access to information from future?

worldbuilding.stackexchange.com

Why Didn't Severus Disapparate In the Shrieking Shack?

scifi.stackexchange.com

Where to Anchor My Space Elevator

worldbuilding.stackexchange.com

Harry Potter and the Half-Blood Prince: Why was Tonks on the 7th floor corridor in Hogwarts?

scifi.stackexchange.com

Could laser (or other energy-bolt-shooting) guns ever practically replace regular guns with bullets?

worldbuilding.stackexchange.com

Why didn’t park-goers bump into the invisible HMS Bounty more often?

scifi.stackexchange.com

Printing a consistent grey: is that still a challenge with comic books?

graphicdesign.stackexchange.com

In "Cause and Effect", how did Worf know to go with Data's suggestion?

scifi.stackexchange.com

Can the Green Lantern ring be removed without the wearer's consent?

scifi.stackexchange.com

Economic and geopolitical effects of building a space elevator?

worldbuilding.stackexchange.com

Seeing from behind a person with the face revealed under an invisibily cloak

scifi.stackexchange.com

What would the world be like if computer software did not have any "undo" feature?

worldbuilding.stackexchange.com

How do you prove you're from the future?

worldbuilding.stackexchange.com

Why isn't Harry in trouble when Tonks does magic around him?

scifi.stackexchange.com

What is the first occurrence of a pre-teen female superhero in comics?

scifi.stackexchange.com

Would people develop spoken language if everyone was telepathic?

worldbuilding.stackexchange.com

What were Dumbledore's actual intentions for the Elder Wand?

scifi.stackexchange.com

Couldn't a house elf have transported Harry to the safe place?

scifi.stackexchange.com

Why are there so few robots in Star Trek?

scifi.stackexchange.com

Culture shock... Alien Social Activities

worldbuilding.stackexchange.com

If there was a majority of land on earth (66 percent land), how would it affect the animals and plant?

worldbuilding.stackexchange.com

Planetary Scale Artworks

worldbuilding.stackexchange.com

When did it become common knowledge that the Atlantis Expedition were from another galaxy?

scifi.stackexchange.com

Would Dumbledore and Severus really expel Harry?

scifi.stackexchange.com

Why did the EMH never take on a name?

scifi.stackexchange.com

Multiple civilizations in individual rocket ships with fake star system overhead

scifi.stackexchange.com

Realistic Future Jobs for Men and Women

worldbuilding.stackexchange.com

How would I know if I were a 1 mm tall robot?

worldbuilding.stackexchange.com