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4 votes
3 answers
587 views

Is this rogue planet capture process possible?

59 votes
23 answers
18k views

The 10,000 year skyscraper

5 votes
2 answers
91 views

Weather, climate, tides and meteorology on the internal surface of a sphere

2 votes
2 answers
266 views

Plausibility of humans turning into mythical creatures at random

13 votes
12 answers
6k views

Why would spaceships still practice venting precious air?

12 votes
9 answers
3k views

Lighter-Than-Air Bridge Technology

5 votes
1 answer
96 views

Sun-like star system with less water close to the frost line

32 votes
29 answers
8k views

Would a civilization simplify their languages (eg:English) in order to let their citizens learn more easily?

5 votes
2 answers
706 views

Would this simplex ternary system be stable?

6 votes
5 answers
929 views

How would an EMP affect spacesuits (and small-arms weapons)?

8 votes
6 answers
6k views

Is it practical to wield a bladed weapon in mouth?

17 votes
12 answers
4k views

Space Piracy, a case study

14 votes
19 answers
4k views

How can I kill off 75-90% of humanity by a non-biological weapon, but leave structures standing?

7 votes
6 answers
4k views

How can a single brain control multiple separate bodies simultaneously?

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