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178 posts edited
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51 Questions

Votes Activity Newest Views
89
79
votes
1
answer
11k
views

A list of worldbuilding resources

worldbuilding-process worldbuilding-resources software-recommendations
Mar 15 at 19:01 rek 12.2k
10
65
votes
21
answers
19k
views

Is it possible to kill all life on Earth?

hard-science near-future earth weapon-mass-destruction
Sep 25 at 4:20 The Square-Cube Law 108k
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 101
14
50
votes
14
answers
12k
views

Can I produce a true 3D orbit?

science-based reality-check orbital-mechanics
Sep 1 '18 at 21:32 Community♦ 1
5
45
votes
19
answers
8k
views

How can Santa defend himself?

santa-claus self-defense
Dec 11 at 20:46 Mammon 120
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 5,083
9
42
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
37
votes
10
answers
4k
views

Managing heat dissipation in a magic wand

science-based protection thermodynamics
May 19 '19 at 4:53 Mark Ripley 1,640
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 '20 at 15:19 Community♦ 1
2
34
votes
12
answers
4k
views

What is Santa's defense against an unlawful withholding of welfare charge?

law alternate-reality santa-claus united-states
Dec 11 at 19:08 Nosajimiki 41.4k
8
34
votes
12
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
 
28
votes
5
answers
3k
views

Plausibility of an Implausible First Contact

science-based xenobiology meteor firstcontact
Mar 19 at 11:47 Community♦ 1
1
14
votes
4
answers
495
views

Navigating storm fronts in space

reality-check space-travel navigation supernova
May 28 at 4:01 HDE 226868♦ 92.5k
2
14
votes
6
answers
5k
views

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

reality-check biology vampires
Feb 19 '20 at 5:49 Tim B II 53.2k
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 - supports Monica 45.2k
3
14
votes
3
answers
456
views

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

creature-design technological-development xenobiology
Jan 1 '18 at 2:06 Oleg Lobachev 2,358
2
13
votes
4
answers
1k
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
12
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 572
2
11
votes
4
answers
329
views

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

hard-science chemistry mars
Jan 4 '19 at 3:54 Thucydides 95.1k
1
11
votes
2
answers
227
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 37.5k
5
10
votes
4
answers
1k
views

Feasibility of a purely mechanical grayscale “computer monitor”

science-based reality-check steampunk
Jan 21 '19 at 9:48 Artelius 1,597
3
10
votes
6
answers
804
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 5,979
1
10
votes
2
answers
342
views

Habitability of a world inside a dark nebula

reality-check planets habitability nebula
Jan 9 '18 at 0:49 Cognisant 4,782
2
10
votes
6
answers
393
views

What technologies might lead to or support “perfect recycling”

science-based technology
Jan 4 '18 at 2:17 Sherwood Botsford 9,667
 
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
441
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
1
7
votes
1
answer
417
views

How much energy is needed to grow an acre of wheat entirely indoors?

science-based energy agriculture
Aug 28 at 22:03 Nosajimiki 41.4k
 
7
votes
2
answers
290
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 - supports Monica 45.2k
1
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