User dot_Sp0T

214

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13

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31k

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Is there a single historic event which could be changed to cause the USA to use SI units?

Dec 21 at 14:36 Ian Kemp 397

114

votes

17

answers

8k

views

In space, do “shipping lanes” make sense?

space travel

Dec 17 at 23:04 The Imperial 1,835

105

votes

11

answers

32k

views

In a medieval setting, how far apart should towns be?

geography cities medieval-europe

Jul 19 '18 at 3:19 user9441904 1

105

votes

6

answers

28k

views

How would having multiple moons affect tides?

planets moons

Mar 30 '17 at 17:59 Luke Steers 1

91

votes

37

answers

16k

views

How to keep humans pilots instead of AI in sci-fi future?

space artificial-intelligence futurology

Sep 1 '18 at 22:23 Demigan 14.5k

88

votes

17

answers

14k

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Are there logical gaps in the periodic table in which you could insert a new mystery element for use as a fuel?

science-based chemistry fuels

Aug 19 at 14:14 Scott 247

74

votes

5

answers

7k

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How quickly and accurately should news travel in a rural medieval setting?

communication medieval-europe

Dec 15 '15 at 20:09 Community♦ 1

70

votes

14

answers

16k

views

Is it possible to make an alloy that melts at low temperatures and solidifies at high temperatures?

chemistry materials

Aug 24 '17 at 2:17 Willk 142k

68

votes

18

answers

12k

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Mineral that explodes when cooling down

science-based physics science-fiction chemistry

May 8 '17 at 1:04 Level River St 2,229

68

votes

24

answers

17k

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What is the utilitarian purpose of artificial waterfalls?

water infrastructure city

Jan 17 at 18:30 EngrStudent 234

60

votes

12

answers

8k

views

Justifying why a troll's skin would turn to stone in sunlight

creature-design fantasy-races anatomy mythology

Jun 28 at 11:18 Michael Mortensen 1,274

56

votes

17

answers

14k

views

Is space piracy orbitally practical?

reality-check space space-travel orbital-mechanics

Dec 6 '16 at 14:24 Community♦ 1

55

votes

3

answers

21k

views

Creating a realistic world map - Currents, Precipitation and Climate

science-based climate currents

Feb 17 '17 at 8:07 Jos Van Iersel 1

53

votes

15

answers

11k

views

Would a steam powered plane be able to cross the Atlantic ocean?

science-based reality-check technology alternate-history flight

Sep 24 at 23:11 overlord 1,674

53

votes

10

answers

5k

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Is there any organization to a shantytown of storage containers?

construction dystopia infrastructure

Apr 1 '17 at 17:00 Community♦ 1

52

votes

9

answers

6k

views

Are there any ways to allow some form of FTL travel without allowing time travel?

science-based space-travel time-travel faster-than-light

Nov 21 '17 at 9:52 James McLellan 7,147

52

votes

31

answers

13k

views

Reason for an exterior control panel on a space ship

spaceships artificial-intelligence engineering

Feb 15 at 0:36 Cyn 19.3k

51

votes

21

answers

13k

views

What natural phenomena could make an island unreachable?

science-based climate geography

Jul 13 '17 at 5:27 JDługosz 60.7k

49

votes

6

answers

10k

views

Could two planets be tidally locked to each other so close they share their atmosphere?

planets reality-check physics orbital-mechanics

May 12 at 21:53 Juraj 1,258

48

votes

9

answers

9k

views

Only the Swiss Are Left - Can They Survive?

post-apocalypse

May 2 '18 at 15:24 Vladislav Yakov 1

42

votes

5

answers

4k

views

Why does my species tock like it ticks?

creature-design evolution psychology

Dec 30 '16 at 3:43 Cort Ammon 117k

41

votes

15

answers

12k

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Biological CPUs - why would the developed world fear them?

Sep 3 '17 at 22:54 Jim Klimov 153

40

votes

11

answers

6k

views

What would people on multi-generational ships wear?

generation-ships clothing

Feb 11 '16 at 14:04 Tom 6,287

37

votes

10

answers

11k

views

How can I destroy a gas giant planet?

science-based planets space

Dec 4 '17 at 13:17 JDługosz 60.7k

37

votes

15

answers

12k

views

Non-relativistic FTL is trivial. Why are spaceships mostly pretty small?

space-travel spaceships

Sep 25 '17 at 13:41 Ross 1,911

36

votes

14

answers

10k

views

How could a sail powered airship work?

flight airships

Nov 7 '17 at 18:36 user535733 12.6k

36

votes

16

answers

25k

views

Modern soldiers carry axes instead of combat knives. Why?

weapons modern-age melee

Mar 12 '17 at 11:45 Secespitus 15.8k

36

votes

12

answers

8k

views

How to stop a massive canal system from silting up?

science-based earth-like terraforming ancient-history rivers

Nov 30 '17 at 22:30 KalleMP 592

34

votes

24

answers

12k

views

What is the most reasonable way for non-binary computers to have become standard?

technology alternate-history computers

Dec 11 at 17:04 Amarth 191

33

votes

6

answers

3k

views

Creating a realistic world map - Mineralogy

geology worldbuilding-process natural-resources

Mar 12 '17 at 22:08 Community♦ 1

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Is there a single historic event which could be changed to cause the USA to use SI units?

In space, do “shipping lanes” make sense?

In a medieval setting, how far apart should towns be?

How would having multiple moons affect tides?

How to keep humans pilots instead of AI in sci-fi future?

Are there logical gaps in the periodic table in which you could insert a new mystery element for use as a fuel?

How quickly and accurately should news travel in a rural medieval setting?

Is it possible to make an alloy that melts at low temperatures and solidifies at high temperatures?

Mineral that explodes when cooling down

What is the utilitarian purpose of artificial waterfalls?

Justifying why a troll's skin would turn to stone in sunlight

Is space piracy orbitally practical?

Creating a realistic world map - Currents, Precipitation and Climate

Would a steam powered plane be able to cross the Atlantic ocean?

Is there any organization to a shantytown of storage containers?

Are there any ways to allow some form of FTL travel without allowing time travel?

Reason for an exterior control panel on a space ship

What natural phenomena could make an island unreachable?

Could two planets be tidally locked to each other so close they share their atmosphere?

Only the Swiss Are Left - Can They Survive?

Why does my species tock like it ticks?

Biological CPUs - why would the developed world fear them?

What would people on multi-generational ships wear?

How can I destroy a gas giant planet?

Non-relativistic FTL is trivial. Why are spaceships mostly pretty small?

How could a sail powered airship work?

Modern soldiers carry axes instead of combat knives. Why?

How to stop a massive canal system from silting up?

What is the most reasonable way for non-binary computers to have become standard?

Creating a realistic world map - Mineralogy