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possiblySerious
  • Member for 7 years, 11 months
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27 votes
12 answers
6k views

Without modern electronics, how could you determine your longitude, latitude, and altitude while lost deep underground?

8 votes
2 answers
1k views

Are there currents in space? Space flotsam?

23 votes
3 answers
7k views

How advanced can a civilization get without zero?

1 vote
8 answers
352 views

Would immovable rods have infinite mass? [closed]

14 votes
6 answers
2k views

Junkyard planet trash distribution?

26 votes
5 answers
8k views

How reflective is blood?

6 votes
3 answers
782 views

How to send a message to the past using a precognizant rabbit?

42 votes
17 answers
7k views

How to prove that the solar system isn't inside of a localized physics bubble? [closed]

-1 votes
2 answers
291 views

Making the entire inner solar system have a breathable atmosphere?

13 votes
2 answers
2k views

What would happen at the core of a water world?

11 votes
5 answers
4k views

How fast would a planet have to be spinning for the centrifugal/centripetal force to cancel out the force of gravity near the equator?

7 votes
4 answers
445 views

If I plan to have myself resuscitated in the future, how can I make sure someone actually remembers to do that?

16 votes
13 answers
1k views

How to govern a society of functionally immortal reality-benders? [closed]

7 votes
5 answers
1k views

Would it be possible to skip an asteroid off of a planet's atmosphere?

5 votes
4 answers
179 views

Properties of air cloud in space

24 votes
3 answers
28k views

How long would it take for a U.S. dollar bill to rot?

6 votes
3 answers
536 views

High-Altitude Life?