User JBH

10

63

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21

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18k

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Is it possible to kill all life on Earth?

Jun 7 at 19:00 tuskiomi 905

9

53

votes

10

answers

11k

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Does my shipboard computer slow down as I approach light speed?

science-based computers electricity relativity

Mar 11 '18 at 17:14 slOOP 91

14

50

votes

14

answers

10k

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Can I produce a true 3D orbit?

science-based reality-check orbital-mechanics

Sep 1 '18 at 21:32 Argo 21

5

44

votes

18

answers

8k

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How can Santa defend himself?

santa-claus self-defense

Dec 31 '18 at 11:18 The Great Duck 1,385

3

44

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5

answers

7k

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What are the safety margins for destroying a planet from space?

planets gravity energy weapon-mass-destruction

Apr 26 '18 at 0:09 bta 3,357

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40

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22

answers

4k

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Is it realistic to believe an apocalyptical setting can last 500+ years?

reality-check society post-apocalypse

Apr 12 '18 at 6:51 Headcrab 1,032

10

39

votes

10

answers

7k

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Is there any material today that could withstand the impact of a baseball at 0.05c?

science-based spaceships

Sep 3 '18 at 4:47 JBH 59.9k

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38

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1

answer

3k

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A list of worldbuilding resources

worldbuilding-process worldbuilding-resources software-recommendations

Sep 25 at 14:54 LinkBerest 2,748

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36

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10

answers

4k

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Managing heat dissipation in a magic wand

science-based protection thermodynamics

May 19 at 4:53 Mark Ripley 1,622

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34

votes

21

answers

5k

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My magic system “pays the price” by drawing its energy from the future: should that affect luck, heat, or life?

magic

Jul 22 '18 at 21:39 DrunkenSailor 141

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How would prolonged use of augmented-reality combat gear affect soldiers?

warfare psychology augmented-reality behaviour

Dec 8 '17 at 9:17 Miller86 1,830

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13

answers

7k

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What does the view outside my ship traveling at light speed look like?

space-travel light vision

Jun 7 at 9:29 Glorfindel 773

2

14

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6

answers

4k

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Would it be reasonable that vampires cannot drink just any blood type save O-? [closed]

reality-check vampires

Dec 21 '18 at 3:14 Tim B II 47.1k

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votes

3

answers

1k

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What would the night sky look like for a world on the upper plane of the galaxy, near its rim?

planets galactic

Nov 28 '18 at 16:11 chasly from UK 27.8k

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votes

3

answers

412

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Are there physiological traits common to all tool-building species?

creature-design technological-development xenobiology

Jan 1 '18 at 2:06 Oleg Lobachev 2,158

13

votes

4

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381

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Navigating storm fronts in space

Apr 18 at 4:42 Muze the good Troll. 1

2

13

votes

4

answers

940

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Is there a habitability zone between the primary and secondary stars of a binary star system?

science-based orbital-mechanics solar-system habitability

Feb 16 at 17:53 Mark S 1

1

11

votes

2

answers

208

views

Would interplanetary transmissions in the Wolf 359 star system be detectable by Earth?

science-based electromagnetism detection

Sep 10 '18 at 18:55 Ash 36.7k

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10

votes

4

answers

857

views

Feasibility of a purely mechanical grayscale “computer monitor”

science-based reality-check steampunk

Jan 21 at 9:48 Artelius 1,177

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10

votes

4

answers

297

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Is it possible to make high-compressive-strength cement on Mars?

hard-science chemistry mars

Jan 4 '19 at 3:54 Thucydides 88.7k

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10

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6

answers

776

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Can a collision with a neutron star make a planet via the can-o-snakes method?

science-based planets gravity stars

Sep 28 '18 at 22:11 cmaster 4,111

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votes

2

answers

266

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Habitability of a world inside a dark nebula

reality-check planets habitability nebula

Jan 9 '18 at 0:49 Cognisant 4,672

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10

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6

answers

332

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What technologies might lead to or support “perfect recycling”

science-based technology

Jan 4 '18 at 2:17 Sherwood Botsford 8,831

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votes

7

answers

2k

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Could an astronaut in a near-future space ship survive transit through our asteroid belt?

reality-check space-travel near-future survival asteroids

Sep 9 '18 at 23:01 AMADANON Inc. 1,191

3

9

votes

4

answers

244

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Smartphone camera resolution can image a human retina: can we save retina biometrics?

science-based near-future security photography

Jun 8 '18 at 6:57 Anonymous 231

6

votes

2

answers

243

views

I cast my stop-time spell and really, really, really want to punch my sworn enemy - which of these two scenarios is more believable?

science-based reality-check energy time-manipulation

Dec 30 '18 at 13:53 chasly from UK 27.8k

1

6

votes

5

answers

695

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How likely is the flotsam of a space battle to be captured by our sun's gravity well?

gravity orbital-mechanics

Dec 23 '18 at 6:35 JBH 59.9k

6

votes

2

answers

274

views

Could solar sails and solar wind plausibly decelerate a ship traveling at 0.05c?

science-based reality-check solar-sails

May 1 '18 at 18:39 Wandering Momentum 84

1

6

votes

6

answers

722

views

Can a 2D object living in a shadow be examined in a 3D world?

science 2d

Aug 31 '17 at 12:56 Separatrix 99.7k

5

votes

5

answers

209

views

Logical Location for my Secure Martian Datacenter

near-future communication construction mars

Jun 18 at 14:05 Roger 5,111

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43 Questions

Is it possible to kill all life on Earth?

Does my shipboard computer slow down as I approach light speed?

Can I produce a true 3D orbit?

How can Santa defend himself?

What are the safety margins for destroying a planet from space?

Is it realistic to believe an apocalyptical setting can last 500+ years?

Is there any material today that could withstand the impact of a baseball at 0.05c?

A list of worldbuilding resources

Managing heat dissipation in a magic wand

My magic system “pays the price” by drawing its energy from the future: should that affect luck, heat, or life?

How would prolonged use of augmented-reality combat gear affect soldiers?

What does the view outside my ship traveling at light speed look like?

Would it be reasonable that vampires cannot drink just any blood type save O-? [closed]

What would the night sky look like for a world on the upper plane of the galaxy, near its rim?

Are there physiological traits common to all tool-building species?

Navigating storm fronts in space

Is there a habitability zone between the primary and secondary stars of a binary star system?

Would interplanetary transmissions in the Wolf 359 star system be detectable by Earth?

Feasibility of a purely mechanical grayscale “computer monitor”

Is it possible to make high-compressive-strength cement on Mars?

Can a collision with a neutron star make a planet via the can-o-snakes method?

Habitability of a world inside a dark nebula

What technologies might lead to or support “perfect recycling”

Could an astronaut in a near-future space ship survive transit through our asteroid belt?

Smartphone camera resolution can image a human retina: can we save retina biometrics?

I cast my stop-time spell and really, really, really want to punch my sworn enemy - which of these two scenarios is more believable?

How likely is the flotsam of a space battle to be captured by our sun's gravity well?

Could solar sails and solar wind plausibly decelerate a ship traveling at 0.05c?

Can a 2D object living in a shadow be examined in a 3D world?

Logical Location for my Secure Martian Datacenter