Notifications
Categories Users Search
Help
Sign Up Sign In
Q&A Rigorous Science Meta
Q&A
Posts Tags
Create Post

General Q&A about worldbuilding and other speculative developments that can be extrapolated from science.

10.5k posts · Subscribe
Activity Age Score Native Lottery
66%
+2 −0
Avoiding Incidental Ion Drive damage to Following Vehicles?

0 answers  ·  last activity 3 days ago by Cazadorro

space-travel ion drive
80%
+6 −0
Would a huge amount of asteroids hitting Earth change its rotation speed or destroy the planet?

1 answer  ·  last activity 2 days ago by HDE 226868

asteroids earth
77%
+5 −0
How efficient can a Dyson sphere be?

0 answers  ·  last activity 8 days ago by HDE 226868

physics dyson-spheres megastructures energy materials
75%
+4 −0
Competently Mobile Photosynthetic Animal?

1 answer  ·  last activity 11 days ago by Cazadorro

biology science-based plant animal
81%
+7 −0
Is it possible to create a beam of non-relativistic neutrinos?

1 answer  ·  last activity 18 days ago by dmckee

physics technology relativity particle-physics
75%
+4 −0
What conditions would cause an extremely dense (dark) coniferous forest to grow?

1 answer  ·  last activity about 1 month ago by Olin Lathrop

climate forestry ecology
66%
+4 −1
Black as color of magic

2 answers  ·  last activity 21 days ago by Aliza

vision colors
50%
+0 −0
Would caves in general be practical lairs for a dragon?

1 answer  ·  last activity about 1 month ago by Mephistopheles

science-based dragons
50%
+0 −0
How could the display technology of self-rewriting books work?

1 answer  ·  last activity about 1 month ago by Mephistopheles

science-based computers robots optics
60%
+1 −0
Could my leviathans exist?

1 answer  ·  last activity about 1 month ago by icewar1908

biology reality-check evolution science-based creature-design
66%
+2 −0
Restricted Directions for an Alcubierre Drive?

0 answers  ·  last activity 7 days ago by HDE 226868

science-based spaceships science-fiction
50%
+0 −0
Exclusively underground creature experiencing sun-light for the first-time

3 answers  ·  last activity about 1 month ago by Prahara

biology reality-check xenobiology
50%
+0 −0
Can a Slime run?

4 answers  ·  last activity about 1 month ago by Murray

biology science-based creature-design alternate-reality
50%
+0 −0
Cons of Antimatter Weaponry

6 answers  ·  last activity about 1 month ago by Dawnfire

science-based antimatter power-sources weapon-mass-destruction science-fiction
50%
+0 −0
Could complex Precambrian life be possible?

1 answer  ·  last activity about 1 month ago by Daikyu Maryu

biology time science-fiction prehistoric-times life
50%
+0 −0
What evolutionary pressures would lead to solitary hominids?

2 answers  ·  last activity about 1 month ago by icewar1908

biology evolution science-based races fantasy-races hominid
60%
+1 −0
Can a galaxy be formed from a black hole?

3 answers  ·  last activity about 1 month ago by 01e5Dk

space reality-check black-holes galactic
50%
+0 −0
What organs or modification needed to have tree that gain energy from lightning or electricity?

5 answers  ·  last activity about 1 month ago by Li Jun

biology science-based flora xenobiology plant-design
50%
+0 −0
What anatomical changes would you need to get 1 ton ride-able rodent?

2 answers  ·  last activity about 1 month ago by Failus Maximus

biology domestication creature-design xenobiology anatomy
50%
+0 −0
How can my reptile like creature spray blood from its eyes containing Capsaicin?

2 answers  ·  last activity about 1 month ago by user3556983

science-based creature-design reptiles zoology
50%
+0 −0
If the Earth would break apart, how likely would the large debris stay in orbit?

2 answers  ·  last activity about 1 month ago by SKKennell

reality-check gravity apocalypse post-apocalypse earth science-fiction alternate-earth
50%
+0 −0
Detection systems and trigger mechanism in a pre-electronic world?

5 answers  ·  last activity about 1 month ago by Trismegistus

technology engineering detection pneumatic
66%
+2 −0
How large would be the habitable area in a tidally locked planet?

2 answers  ·  last activity about 1 month ago by Mister Onion

planets
50%
+0 −0
With as much scientific accuracy as possible, how would chemicals injected in one's body be removed?

7 answers  ·  last activity about 1 month ago by scriptyshake

science-based chemistry science-fiction near-future dystopia biochemistry future
50%
+0 −0
Could a creature use lightning/electricity as its energy supply?

1 answer  ·  last activity about 1 month ago by AlexT

biology science-based creature-design
50%
+0 −0
Megamangrove Roots--Which Kind of Aerial Roots Would Best Support Their Large Size?

1 answer  ·  last activity about 1 month ago by JohnWDailey

science-based adaptability earth alternate-earth plant-design
50%
+0 −0
Could penguins evolve to have fingers?

1 answer  ·  last activity about 1 month ago by Thormind

biology evolution creature-design avian
50%
+0 −0
To carry a person in its palm (like King Kong) how much pressure and at what speed would a kaiju need to apply?

2 answers  ·  last activity about 1 month ago by Luke Duffy

biology physics gravity kaiju
50%
+0 −0
recreational drug specifically for reptile?

2 answers  ·  last activity about 1 month ago by Li Jun

science-based reptiles pharmacology
50%
+0 −0
Could special relativity be caused by aliens jamming the Solar System?

8 answers  ·  last activity about 1 month ago by o0'.

space travel science-based space-travel relativity
50%
+0 −0
How long can a human body function at safe levels in slightly higher and lower gravity?

1 answer  ·  last activity about 1 month ago by RandySavage

biology gravity
66%
+2 −0
Do seasons occur on a tidally-locked planet?

4 answers  ·  last activity about 1 month ago by HDE 226868

astronomy planets seasons astrophysics tidally-locked
50%
+0 −0
anatomy or musculature to achieve full rotate jaw?

7 answers  ·  last activity about 1 month ago by Li Jun

biology reality-check science-based creature-design anatomy
50%
+0 −0
Giant velvet mites?

0 answers  ·  last activity about 1 month ago by Praearcturus

biology science-based insects
60%
+1 −0
biologically or anatomically is there a problem with this type of double mouth or jaws?

5 answers  ·  last activity about 1 month ago by Li Jun

biology reality-check science-based creature-design anatomy
50%
+0 −0
Would a sapient being sensitive to polarized light be able to see the angle of polarization in a photograph?

7 answers  ·  last activity about 1 month ago by user2352714

biology light anatomy photography
50%
+0 −0
Could Sharks Survive a Longer PETM?

1 answer  ·  last activity about 1 month ago by JohnWDailey

science-based adaptability time earth alternate-history history prehistoric-times alternate-earth
60%
+1 −0
What needs to be changed about the plate tectonics of my world?

1 answer  ·  last activity about 1 month ago by devendoo

geography map-making tectonics
50%
+0 −0
Earth-sized Moon with Host Planet launched from Star System

4 answers  ·  last activity about 2 months ago by user76027

biology planets moons orbital-mechanics rogue-planets xenobiology
50%
+0 −0
Why haven't scientists found evidence of humans interbreeding with aliens?

6 answers  ·  last activity about 1 month ago by Arbiter Elegante

biology reproduction genetics archaeology xenobiology species
50%
+0 −0
A creature with a built in flashlight

2 answers  ·  last activity about 1 month ago by Chickenpeep Chickenpeep

biology creature-design
50%
+0 −0
Could we build a roof over the Grand Canyon?

2 answers  ·  last activity about 2 months ago by Appleguysnake

reality-check science-based technology engineering
50%
+0 −0
Could a galaxy of Nicoll-Dyson beams hit a single target?

2 answers  ·  last activity about 2 months ago by RandySavage

physics megastructures gas galactic
50%
+0 −0
A light tower based communication system

5 answers  ·  last activity about 2 months ago by Mister Onion

science-based communication
50%
+0 −0
Are these traits for my planet mathematically accurate? Could it support life?

2 answers  ·  last activity about 2 months ago by Praearcturus

reality-check planets science-based habitability
50%
+0 −0
Is it feasible to have an oxidizing planetary atmosphere without the presence of an organic photosynthesis of some kind on the planet?

1 answer  ·  last activity about 2 months ago by RosesBouquet

atmosphere oxygen photosynthesis carbon-based
50%
+0 −0
Proportions of a giant humanoid?

2 answers  ·  last activity about 2 months ago by Praearcturus

biology reality-check science-based anatomy humanoid
50%
+0 −0
Most efficient actinopterygian jaw structure?

2 answers  ·  last activity about 2 months ago by Praearcturus

biology skeletons anatomy zoology
50%
+0 −0
What would encourage multiple animal species to evolve human features simultaneously?

8 answers  ·  last activity about 1 month ago by Lizardsaurus

reality-check evolution genetic-engineering engineering ecology far-future future
50%
+0 −0
Is this a reasonable way to enforce a ban on exotic weapons in an interstellar setting?

3 answers  ·  last activity about 2 months ago by TheDyingOfLight

space politics colonization space-colonization weapon-mass-destruction science-fiction
Category RSS feed

Hot Posts

Q&A Would a huge amount of asteroids hitting Earth change its rotation speed or destroy the planet?
Meta I received a notification about a new answer to my question, but there are no answers
Q&A Restricted Directions for an Alcubierre Drive?
Q&A Avoiding Incidental Ion Drive damage to Following Vehicles?
Q&A Is this planet's atmosphere stable and reasonable, and anything to keep in mind for lifeforms living in it?

This site is part of the Codidact network. We have other sites too — take a look!

Chat

Join us in chat!