Scientific Speculation

81%

+7 −0

Would a huge amount of asteroids hitting Earth change its rotation speed or destroy the planet?

1 answer · last activity 7 months ago by HDE 226868‭

asteroids earth

81%

+7 −0

Is it possible to create a beam of non-relativistic neutrinos?

1 answer · last activity 7 months ago by dmckee‭

physics technology relativity particle-physics

80%

+6 −0

Why would a race constantly deafened by ambient noises still hear?

1 answer · last activity about 1 month ago by DonielF‭

evolution senses abilities

80%

+6 −0

How do you establish identity when people can change their appearance at will?

3 answers · last activity 11 days ago by Pastychomper‭

genetics identity governance

80%

+6 −0

Is it realistic to see satellites moving across the sky centuries after humans stopped space activity?

1 answer · last activity about 2 months ago by Green‭

space satellites

80%

+6 −0

How efficient can a Dyson sphere be?

1 answer · last activity 2 months ago by celtschk‭

physics dyson-spheres megastructures energy materials

77%

+5 −0

Magnet strong enough to rip the iron out of your body feasible?

2 answers · last activity 5 months ago by DonielF‭

biology magnetism electromagnetism

77%

+5 −0

What conditions would cause an extremely dense (dark) coniferous forest to grow?

1 answer · last activity 7 months ago by Olin Lathrop‭

climate forestry ecology

77%

+5 −0

What Factors Could Cause a World to See "Northern" Lights Much Closer to the Equator?

4 answers · last activity 8 months ago by Canina‭

astronomy atmosphere

75%

+4 −0

How do I realistically keep my large mammalian predator hidden from other pack hunters.

3 answers · last activity 4 months ago by Lundin‭

biology creature-design mammals abilities

75%

+4 −0

Avoiding Incidental Ion Drive damage to Following Vehicles?

1 answer · last activity 6 months ago by dmckee‭

space-travel ion drive

75%

+4 −0

Competently Mobile Photosynthetic Animal?

1 answer · last activity 7 months ago by Cazadorro‭

biology science-based plant animal

75%

+4 −0

Restricted Directions for an Alcubierre Drive?

1 answer · last activity 6 months ago by lsusr‭

science-based spaceships science-fiction

72%

+6 −1

Why would merfolk have hair?

21 answers · last activity 7 months ago by PinoBatch‭

reality-check evolution creature-design merfolk hair

71%

+3 −0

How do I manage memetic infection while time traveling?

2 answers · last activity about 2 months ago by Green‭

time-travel information

71%

+3 −0

Plausibility of "multi-type transmissible animal cell tumor" to form more complex structures.

1 answer · last activity 7 days ago by Pastychomper‭

medical animal tumor cell

71%

+3 −0

Would a 200-Pound Dwarf Still Need to Wear Clothing?

1 answer · last activity 6 months ago by pnuts‭

biology science-based adaptability humanoid alternate-earth

71%

+3 −0

What would the sky view be like of a final stage massive merged galaxy?

1 answer · last activity 8 months ago by HDE 226868‭

astronomy galactic

71%

+3 −0

How to make an animal which can only breed for a certain number of generations?

13 answers · last activity 6 months ago by James Jenkins‭

biology science-based

66%

+4 −1

Black as color of magic

2 answers · last activity 7 months ago by Aliza‭

vision colors

66%

+2 −0

How large would be the habitable area in a tidally locked planet?

2 answers · last activity 8 months ago by Mister Onion‭

planets

66%

+2 −0

Is a genetically modified human with a much higher height plausible?

3 answers · last activity 3 months ago by Razetime‭

evolution humans

66%

+2 −0

Do seasons occur on a tidally-locked planet?

4 answers · last activity 8 months ago by HDE 226868‭

astronomy planets seasons astrophysics tidally-locked

66%

+2 −0

How long would a planet that losses its gravity take to break up?

1 answer · last activity 8 months ago by HDE 226868‭

physics gravity science-fiction

66%

+2 −0

How fast would strange matter conversion go?

1 answer · last activity 7 months ago by HDE 226868‭

science-based physics quantum astrophysics

66%

+2 −0

Could there be something like the Higgs field which gives particles their energy in a similar way to how the Higgs boson gives particles their mass?

1 answer · last activity 8 months ago by HDE 226868‭

science-based physics energy science-fiction quantum

66%

+2 −0

What if the Planck constant was exactly zero?

3 answers · last activity 8 months ago by HDE 226868‭

physics quantum

66%

+2 −0

Interstellar internet use cases, or "What if the internet was mail-order?"

5 answers · last activity almost 6 years ago by AdamHovorka‭

space internet

66%

+2 −0

How do seasons work in a binary system (planet orbits one star, not both)?

5 answers · last activity 7 months ago by Monica Cellio‭

planets science-based stars light

66%

+2 −0

Are geographically typed planets realistic?

5 answers · last activity 7 months ago by Canina‭

reality-check planets geography

66%

+2 −0

The evolution of neon kittens

4 answers · last activity almost 5 years ago by Green‭

biology evolution science-based creature-design earth

66%

+2 −0

What impact is required for a visible (from Earth) ejecta plume on Earth's Moon, and would the Moon survive?

3 answers · last activity about 4 years ago by Canina‭

astronomy planets science-based earth

66%

+2 −0

How can the Hertzsprung-Russell diagram be used in star building?

3 answers · last activity 8 months ago by HDE 226868‭

astronomy stars

62%

+3 −1

Wings going from locomotive purposes in juveniles to sexual purposes in adults, plausible?

0 answers · last activity 4 months ago by Lundin‭

evolution sex species

60%

+4 −2

Effects of not growing up?

1 answer · last activity about 2 months ago by Olin Lathrop‭

biology

60%

+1 −0

How feasible would gliders or the like be on a flat plain, with no cliffs to launch from?

6 answers · last activity 8 months ago by AlexT‭

science-based technology

60%

+1 −0

Could my leviathans exist?

1 answer · last activity 8 months ago by icewar1908‭

biology reality-check evolution science-based creature-design

60%

+1 −0

Can a galaxy be formed from a black hole?

3 answers · last activity 8 months ago by 01e5Dk‭

space reality-check black-holes galactic

60%

+1 −0

What needs to be changed about the plate tectonics of my world?

1 answer · last activity 8 months ago by devendoo‭

geography map-making tectonics

60%

+1 −0

biologically or anatomically is there a problem with this type of double mouth or jaws?

5 answers · last activity 8 months ago by Li Jun‭

biology reality-check science-based creature-design anatomy

60%

+1 −0

Is radar better than visible light in deep space?

8 answers · last activity 8 months ago by Willk‭

space light

60%

+1 −0

Guns in space with bullets that return?

12 answers · last activity over 1 year ago by Greenie E. - Reinstate Monica‭

travel physics space-travel firearms

60%

+1 −0

How could a civilization detect tachyons?

5 answers · last activity over 1 year ago by Cereza‭

space science-based physics communication faster-than-light

60%

+1 −0

Inverse orbital direction

2 answers · last activity 8 months ago by HDE 226868‭

planets orbital-mechanics

60%

+1 −0

Can velocity drift be used to calculate a radio wave source's distance from Earth?

4 answers · last activity 8 months ago by HDE 226868‭

astronomy radio

60%

+1 −0

Does crossing a wormhole happen instantaneously, or with the course of time?

2 answers · last activity 8 months ago by ArtOfCode‭

science-based wormholes transportation

60%

+1 −0

Do Alcubierre Drives Mandate Time Travel, or Just Allow it?

1 answer · last activity about 1 year ago by FlyingLemmingSoup‭

travel science-based space-travel science-fiction

60%

+1 −0

The Earth and Moon resolidify under a bluer star, their outer layers evaporated and burned away. What do they look like now?

1 answer · last activity 11 months ago by Astrid_Redfern‭

planets science-based moons stars solar-system

60%

+1 −0

Bleeding as the bodily equivalent of a positive pregnancy test, Plausible?

2 answers · last activity 11 months ago by Caters‭

science-based creature-design

60%

+1 −0

How close to each other can Earth-mass planets plausibly form from the protoplanetary disk?

3 answers · last activity over 1 year ago by Canina‭

planets science-based solar-system

Communities