User Christmas Snow

2 votes

Reality Check: Meteor Shower buried supermetal in the earth's crust, that is now being mined out

answered Nov 22, 2023 at 16:27

2 votes

Expanding a modular space-station for 100 years

answered Oct 11, 2023 at 15:16

2 votes

What could lead a large ocean on a planet's surface to recede completely only to reappear later on in a cyclical process?

answered Oct 16, 2023 at 18:13

2 votes

Definite pitch designs only, what musical instrument and class of musical instruments would be easiest to design if the world reset?

answered Oct 21, 2023 at 16:05

2 votes

Do internal combustion piston engines have a place in an interstellar civilization?

answered Mar 14 at 18:53

2 votes

Pulsed Acceleration Gravity

answered Jan 11 at 18:57

2 votes

Fuel for a commercial space shuttle

answered Mar 2, 2019 at 15:02

2 votes

Why bother programming facial expressions for artificial intelligence if humans are bad at recognising them?

answered Feb 13, 2019 at 17:42

2 votes

what could be used for flexible piping in the 1780s

answered Oct 10, 2019 at 11:41

2 votes

Would a double-decker tri-articulated bus work effectively?

answered Feb 27, 2019 at 18:12

2 votes

Plausible reason for Earth not be able to get updates about terraforming on Mars?

answered Oct 10, 2018 at 13:16

2 votes

Accepted

Anatomically correct metalhead, part 2 - physiology

answered Nov 21, 2018 at 18:56

2 votes

How could an agricultural revolution develop in medieval societies inhabiting a tropical environment work?

answered Nov 23, 2018 at 21:35

2 votes

Would it be possible for a cave system to naturally exist at a different temperature and pressure than the surface?

answered Aug 27, 2018 at 13:18

2 votes

How could a bloodline ability manifest in one sex but not the other?

answered Dec 27, 2018 at 12:13

2 votes

What would happen to a human body subjected to extreme water pressure?

answered Dec 17, 2018 at 19:27

2 votes

How can a small planetoid hold an atmosphere under artificial means?

answered Jan 27, 2018 at 20:36

2 votes

Could a water-world planet with tides that create land support human civilisations?

answered Dec 9, 2017 at 8:52

2 votes

How much time will it take the humanity to forget how to repair machinery after a nuclear apocalypse?

answered Aug 15, 2017 at 16:37

1 vote

Is a planet with only vaporized water atmosphere livable?

answered Aug 9, 2017 at 13:02

1 vote

How do 21st century C.E. submersibles enter an underwater dome swiftly and safely?

answered Oct 3, 2017 at 16:38

1 vote

Alien Life on a Venus-like World?

answered Nov 22, 2017 at 10:47

1 vote

What's a plausible-sounding technobabble explanation for Mars to be a forest world supplying Earth with timber?

answered Aug 9, 2018 at 20:13

1 vote

Are Extraterrestrial's pagoda trees plausible?

answered Aug 13, 2018 at 7:02

1 vote

The possibility and possible backlash of a thruster large enough to move a planet

answered Dec 8, 2017 at 20:33

1 vote

Could people survive on earth if a day lasted 100 years?

answered Oct 15, 2018 at 21:35

1 vote

How could a species that breathes through its skin develop spoken language?

answered Dec 23, 2018 at 19:55

1 vote

How deep can an ordinary human completely bury themselves armed only with a shovel?

answered Dec 26, 2018 at 20:53

1 vote

What are the power options for intelligent humanoid robots?

answered Jan 9, 2019 at 6:03

1 vote

Brine pool ecosystems

answered Sep 23, 2018 at 16:19

Stack Exchange Network

154 Answers

Reality Check: Meteor Shower buried supermetal in the earth's crust, that is now being mined out

Expanding a modular space-station for 100 years

What could lead a large ocean on a planet's surface to recede completely only to reappear later on in a cyclical process?

Definite pitch designs only, what musical instrument and class of musical instruments would be easiest to design if the world reset?

Do internal combustion piston engines have a place in an interstellar civilization?

Pulsed Acceleration Gravity

Fuel for a commercial space shuttle

Why bother programming facial expressions for artificial intelligence if humans are bad at recognising them?

what could be used for flexible piping in the 1780s

Would a double-decker tri-articulated bus work effectively?

Plausible reason for Earth not be able to get updates about terraforming on Mars?

Anatomically correct metalhead, part 2 - physiology

How could an agricultural revolution develop in medieval societies inhabiting a tropical environment work?

Would it be possible for a cave system to naturally exist at a different temperature and pressure than the surface?

How could a bloodline ability manifest in one sex but not the other?

What would happen to a human body subjected to extreme water pressure?

How can a small planetoid hold an atmosphere under artificial means?

Could a water-world planet with tides that create land support human civilisations?

How much time will it take the humanity to forget how to repair machinery after a nuclear apocalypse?

Is a planet with only vaporized water atmosphere livable?

How do 21st century C.E. submersibles enter an underwater dome swiftly and safely?

Alien Life on a Venus-like World?

What's a plausible-sounding technobabble explanation for Mars to be a forest world supplying Earth with timber?

Are Extraterrestrial's pagoda trees plausible?

The possibility and possible backlash of a thruster large enough to move a planet

Could people survive on earth if a day lasted 100 years?

How could a species that breathes through its skin develop spoken language?

How deep can an ordinary human completely bury themselves armed only with a shovel?

What are the power options for intelligent humanoid robots?

Brine pool ecosystems