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Blue Devil's user avatar
Blue Devil's user avatar
Blue Devil
  • Member for 3 years, 10 months
  • Last seen more than a month ago
2 votes
1 answer
97 views

Most ''Logical'' location for gills on a humanoid [duplicate]

11 votes
9 answers
4k views

Plausibility of a car running on noble gasses

2 votes
7 answers
132 views

Alternative Fuel types for motor vehicles [closed]

6 votes
10 answers
1k views

Specific type of invisible ink

12 votes
3 answers
1k views

Feasibility of a humanoid with both an endo and exoskeleton

4 votes
1 answer
131 views

Realistic limits of a ''Growth Spurt''

1 vote
6 answers
251 views

Most realistic reward for Military action [closed]

4 votes
3 answers
523 views

Trying to categorize political system of a fictional country

8 votes
3 answers
4k views

Would a moon with plantlife still give off (reflect) light?

2 votes
1 answer
194 views

Optimal tracks/treads for Desert based tank

2 votes
4 answers
151 views

Logical type of projectile weapon (firearm) for use in outer space [duplicate]

0 votes
4 answers
111 views

Worldwide climate [duplicate]

-4 votes
1 answer
269 views

Non metallic currency [closed]

4 votes
1 answer
262 views

Mountain Destruction by mining

1 vote
3 answers
135 views

(Semi) Believable way to quickly submerge a large landmass

3 votes
5 answers
335 views

How to tackle one or multiple submerged continents

1 vote
2 answers
115 views

Possible explanation of amphibious abilities

3 votes
2 answers
90 views

Possibility of certain climates

2 votes
3 answers
932 views

Realistic look for subterranean humanoid race

5 votes
2 answers
255 views

Appropriate Material for a Red Moon

3 votes
3 answers
207 views

(Semi) Scientific way to explain fast space travel

5 votes
6 answers
376 views

Best type of vehicle propulsion for rough terrain

3 votes
3 answers
477 views

Gas Giant with solid surface

1 vote
1 answer
1k views

Effects of multiple moons on a planet

8 votes
5 answers
2k views

''Habitable'' planet close to a star

3 votes
4 answers
256 views

Rotation period of a planet around a star (sun)

2 votes
2 answers
1k views

Realistic placements of Mountains and the like

5 votes
3 answers
2k views

What is the Habitable Zone of a Red Dwarf star?

8 votes
5 answers
2k views

Distance between star systems

2 votes
2 answers
213 views

Equatorial or Meridial Ocean