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1 vote
1 answer
119 views

Characteristics of a moon harboring huge flying creatures?

I’ve been thinking for a while about an extraterrestrial species I had in mind that more or less resemble very large four-winged four-legged birds, and in the name of ensuring I don’t handwave an ...
controlgroup's user avatar
  • 5,335
1 vote
3 answers
188 views

How would humans evolve in this star system?

Say that a large amount of humans settled in this system and have been living there for a few tens of thousands of years. The system is a binary system with two stars, a sun-like yellow dwarf and a ...
OprenStein's user avatar
1 vote
4 answers
691 views

What would stop megafauna from evolving in low gravity planets?

On planets with lower gravity than earth what might make carbon bases megafaun rarer than in our own planet? The planets have a source of geothermic energy, solar energy, winds and oceans. Sometimes ...
user avatar
1 vote
1 answer
203 views

I'm building a fantasy world with three large moons and orbiting a distant sun. I need help with the following: [closed]

1 - What might the days and nights be like, in terms of comparative temperatures and length, with three moons gravity and a massive orbit?
darkgingerbread's user avatar
7 votes
2 answers
396 views

Drawing landmasses for this odd-shaped planet

I've just come here for some help drawing a map for this fictional planet where two roughly similar planets have been smushed into kind of pear shape like this: So this planet spins on an axis which ...
Leonard Greenland's user avatar
-2 votes
6 answers
331 views

200G to 1G environment

Let's say a human were to live most of his life in a 200 G environment but then suddenly enter a 1 g environment, What would be the effects to his body and will this give him the ability to carry ...
Underhanded CODE's user avatar
1 vote
4 answers
272 views

What is the "fullest" the universe could be in terms of living space? [closed]

Lets take a civilization that has surpassed the type III on the Kardashev scale. It has the following assumptions: It harnesses the energy of entire Galaxies, its populace did not transcend. If you ...
Demigan's user avatar
  • 45.5k
36 votes
9 answers
12k views

What are the effects of slicing the Earth in half with a particle beam?

Scenario: An exact copy of our world is sliced in half by a particle beam. The beam has a diameter of 40 meters and moves at a speed of 0.999c. The beam slices the earth from top to bottom in 600 ...
Chris's user avatar
  • 445
7 votes
3 answers
2k views

Effects of gravity upon weather?

So there are loads of things that are taken into account with weather from geology to water currents to axial tilt etc. But i am wondering what the effects would be on weather on planets with varying ...
AYoungRabbit's user avatar
6 votes
2 answers
649 views

Gravity/Ecosystem on a peanut-shaped planet?

I'm interested about whether or not and how gravity would be affected on deformed planets. You could think of this as whether or not mega-asteroids would be able to sustain life? If so, would ...
DiagonalCorgi's user avatar
10 votes
4 answers
860 views

What consequences could a higher surface gravity have on life and geological evolution?

I am trying to build a world which has a bit larger gravity force than earth, 1.25g. And I was wondering which impact could this have on its geology and life evolution. I think that with a higher ...
leojg's user avatar
  • 201
9 votes
7 answers
3k views

Infinite tube world

I'm inspired by this question and was thinking that it is nigh impossible for sun, moon and star to exist in this world and even if they do, there is no way to sun and moon to orbit and create day-...
Deepak's user avatar
  • 203
10 votes
7 answers
3k views

How to avoid infinite gravity

I have a world I want to put together but I ran into a problem. Description This world is a cube infinite in all directions, exactly half of it is full of earth and half is space (where we see ...
unknown's user avatar
  • 920
9 votes
3 answers
13k views

If Earth's gravity suddenly became stronger, how would we cope?

If the force of gravity at the Earth's surface suddenly became 2 times stronger, how would the environment and humans cope? I'm guessing a lot of flying creatures would suffer, but what would happen ...
CrazySlayaNinjaBear's user avatar
11 votes
3 answers
9k views

If the gravity was half as strong, how would the enviroment change? [closed]

If the gravity was half as strong, how would the enviroment change? Would all the plants grow differently? What change would there be in flying creatures?
CrazySlayaNinjaBear's user avatar