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How to prevent theft in a society where everyone has hyperspace storage?

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The Square-Cube Law
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14 votes
7 answers
5k views

Can we hit the spaceship

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causative
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15 answers
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How could a Renaissance level feudal society get into space?

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jaboja
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7 answers
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Can a spaceship "hitchhike" on an explosion to escape a gravity well?

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Peter - Reinstate Monica
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6 answers
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Possibility of anachronistic fossils due to time travel

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N. Virgo
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8 answers
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Realistic protection for spaceships against kinetic projectiles

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causative
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Super-powered being flying over national airspace

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Sarah Messer
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The science behind an invisible wall of pain

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Greg Martin
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5 votes
8 answers
667 views

Why are scout bots only used for reconnaissance?

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Trish
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How much steel could be recovered from cities a few hundred years after a nuclear apocalypse? [duplicate]

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Andy
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9 votes
6 answers
1k views

What range of altitudes would not be fatal for an astronaut falling from height on the moon?

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jcaron
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5 answers
1k views

Bullet resistant space armor material

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Kitalda
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5 answers
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Did I just discover that the ether that my etheric keels interact with is four-dimensional?

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AlexP
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780 views

How to survive a helicopter crash using alien biotechnology?

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CommunityBot
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2 answers
149 views

Could a torpedo fits through a smaller opening due to length contraction?

JBH's user avatar
JBH
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2 answers
271 views

Is it possible for a plant to form a biological "greenhouse" to protect its delicate flowers using some sort of clear, insular material?

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Cloudberry
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3 answers
157 views

How to provide a concrete evidence that the time machine works? [closed]

JBH's user avatar
JBH
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1 vote
1 answer
238 views

Can a terrestial planet have a core of metallic hydrogen?

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Robert Rapplean
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318 views

How could I redesign my dragons to have 6 limbs and still be able to fly?

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Monty Wild♦
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167 views

In a world with a species of Parasitic Flower, What afflictions could it cause to a living organism?

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Separatrix
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3 answers
78 views

How could a spacecraft defend against a train of small hypervelocity impactors?

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TheDemonLord
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117 views

So, I was thinking a biological kinda ozone layer?

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Kilisi
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2 votes
2 answers
137 views

Rate at which jackhammer excavates asteroid

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JBH
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1 answer
123 views

How to prevent demon slayers from murdering their own en masse?

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TheDemonLord
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4 votes
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120 views

Can two species from the same genus but with a different sex determination system interbreed and have fertile (or at least sub-fertile) offspring?

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mammifereviolet4694
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2 answers
114 views

Could laser collisions be used as an interstellar dust deflector?

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Starfish Prime
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3 answers
106 views

How would a government lay claim over a Space Colony that it never founded? What legal arguments could they make to cite it’s always been theirs? [closed]

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flox
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1 vote
2 answers
58 views

If the entire ocean on Earth were poured into Mars instantly, how long would it last?

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Dragongeek
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1 answer
119 views

What time units would a civilisation constantly travelling between planets and universes use? [duplicate]

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value1
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2 answers
144 views

How do you justify Adventurers being multiple [Character Classes] instead of everyone being Generalists in fantasy settings? [closed]

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causative
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1 answer
142 views

How would a supernatural boiling sea in the Southern Ocean affect Earth's climate? [closed]

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TheGoldenBoy2188 The Coolest G
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1 vote
3 answers
133 views

Which firearms should a group of people time-travelling with the intent to conquer carry if it's a one way trip on a ship [closed]

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jdunlop
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2 votes
1 answer
100 views

How could the Electrokinesis of this race I’ve created be enhanced by Pyrokinesis?

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Godzilla Louise
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2 votes
1 answer
140 views

Question about speculative human biology

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dsollen
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6 votes
0 answers
70 views

Temperature of an Earthlike planet in Mars location?

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L.Dutch♦
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0 answers
78 views

How can I describe a plausible spacetraveling alien civilization that looks as unlike as humans as possible while maintaining hard sci-fi norms [closed]

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max
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0 answers
75 views

How to find the region where gas giants can exist?

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DanceroftheStars
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-2 votes
0 answers
74 views

Does anyone know whether or not there is a specific name for a scarf which only veils the lower portion of a character's face? [closed]

JBH's user avatar
JBH
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0 answers
54 views

How would you justify technological advancement both digital and cybernetic without the risks of orwellian controls? [closed]

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L.Dutch♦
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1 answer
54 views

How to market cloaking devices at different tiers? [closed]

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Escaped dental patient.
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0 answers
34 views

What would a society that hasn't reached space yet think of their planet's rings? [closed]

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Kilisi
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0 answers
27 views

Movement of magma and the build up of the magnetic fields around the earth. I am not a scientist [closed]

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Steven Hall
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