User JBH

9

63

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21

answers

18k

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Is it possible to kill all life on Earth?

Jun 7 '19 at 19:00 Community♦ 1

9

53

votes

10

answers

11k

views

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

11k

views

Can I produce a true 3D orbit?

science-based reality-check orbital-mechanics

Sep 1 '18 at 21:32 Community♦ 1

57

48

votes

1

answer

5k

views

A list of worldbuilding resources

worldbuilding-process worldbuilding-resources software-recommendations

Jun 14 at 19:38 JBH 63.5k

3

45

votes

5

answers

7k

views

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

planets gravity energy weapon-mass-destruction

Apr 26 '18 at 0:09 bta 4,003

5

44

votes

18

answers

8k

views

How can Santa defend himself?

santa-claus self-defense

Dec 31 '18 at 11:18 Community♦ 1

9

41

votes

22

answers

4k

views

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

reality-check society post-apocalypse

Apr 12 '18 at 6:51 Community♦ 1

10

39

votes

10

answers

8k

views

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 Community♦ 1

5

36

votes

10

answers

4k

views

Managing heat dissipation in a magic wand

science-based protection thermodynamics

May 19 '19 at 4:53 Mark Ripley 1,630

6

35

votes

22

answers

6k

views

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

magic

May 22 at 15:19 Community♦ 1

8

34

votes

13

answers

7k

views

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

space-travel light vision

Jun 7 '19 at 9:29 Community♦ 1

7

34

votes

9

answers

5k

views

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

warfare psychology augmented-reality behaviour

Dec 8 '17 at 9:17 Miller86 1,850

1

14

votes

4

answers

476

views

Navigating storm fronts in space

May 28 at 4:01 HDE 226868♦ 87k

2

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5k

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

reality-check biology vampires

Feb 19 at 5:49 Tim B II 52.6k

2

14

votes

3

answers

1k

views

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 - reinstate Monica 30.6k

3

14

votes

3

answers

431

views

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

creature-design technological-development xenobiology

Jan 1 '18 at 2:06 Oleg Lobachev 2,258

2

13

votes

4

answers

988

views

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 '19 at 17:53 Community♦ 1

1

11

votes

7

answers

3k

views

Is there anything about photons and/or space-time that would allow the detection of an energy-based attack from a distance of ten light seconds?

weapons hard-science energy detection

Jun 12 at 14:45 Mark Foskey 472

2

11

votes

4

answers

309

views

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

hard-science chemistry mars

Jan 4 '19 at 3:54 Thucydides 93.4k

1

11

votes

2

answers

223

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 37.1k

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10

votes

4

answers

927

views

Feasibility of a purely mechanical grayscale “computer monitor”

science-based reality-check steampunk

Jan 21 '19 at 9:48 Artelius 1,317

3

10

votes

6

answers

793

views

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 - reinstate monica 4,596

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10

votes

2

answers

290

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Habitability of a world inside a dark nebula

reality-check planets habitability nebula

Jan 9 '18 at 0:49 Cognisant 4,732

2

10

votes

6

answers

363

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What technologies might lead to or support “perfect recycling”

science-based technology

Jan 4 '18 at 2:17 Sherwood Botsford 9,071

9

votes

7

answers

2k

views

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 Community♦ 1

3

9

votes

4

answers

314

views

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 Community♦ 1

6

votes

2

answers

258

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 - reinstate Monica 30.6k

1

6

votes

5

answers

696

views

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 63.5k

6

votes

2

answers

286

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

771

views

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

science-in-society 2d

Aug 31 '17 at 12:56 Community♦ 1

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44 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?

A list of worldbuilding resources

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

How can Santa defend himself?

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?

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?

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

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

Navigating storm fronts in space

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?

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

Is there anything about photons and/or space-time that would allow the detection of an energy-based attack from a distance of ten light seconds?

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

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

Feasibility of a purely mechanical grayscale “computer monitor”

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?