Unanswered Questions

21 questions with no upvoted or accepted answers
53
votes
0answers
2k views

How soon can the first stars form?

Introduction In our universe, the cosmic microwave background was formed approximately 400,000 years after the Big Bang. It was hot, but within a few million years after the Big Bang, it would no ...
8
votes
1answer
124 views

Air resistance speed limits on a broomstick

I'm working on a tabletop roleplaying game about witches. I have most of the mechanics of broomsticks worked out, but I'm having trouble deciding on top speeds. Speed limits are not a result of how ...
7
votes
0answers
238 views

Schwarzschild Metric in a universe with the same space time metric as that described in the orthogonal series, but with massive gravitons?

The universe described in the orthogonal series http://www.gregegan.net/ORTHOGONAL/00/PM.html is one, in which the minus sign in the space time interval is replaced with a plus sign. So this universe ...
5
votes
1answer
133 views

Can you replace goethite with something else in limpet teeth to decrease its density and maintain its strength?

The limpet teeth's microscopic structure is analogous to man-made short-fiber composites. Its strength depends on the direction of the force, relative to the orientation of the fibers. https://www....
4
votes
0answers
48 views

What does a gas giant close to a red dwarf look like?

In my setting, there's a gas giant orbiting in the habitable zone of a red dwarf (for specificity, its radius is about half Jupiter's, and it's 0.35 AU from 61 Cygni B. Ignore the effect of the other ...
4
votes
1answer
58 views

What is the fastest that an ordinary biological system could be digested / disintegrated / liquefied by another (plausible) biological system?

How quickly could a bacterial colony / virus / pool-'o-prions / [whatever] digest, disintegrate, or otherwise liquefy an ordinary terrestrial biological system? Think something along the lines of "...
3
votes
0answers
33 views

Feasibility of yog sothoth

in the Cthulhu mythos, yog sothoth is depicted as a mass of splitting and fusing orbs, it is the past, present, and future and seemingly knows everything. but for the sake of trying to make it ...
3
votes
0answers
132 views

How do I determine the physical size of a quartz crystal of a given shape and vibrational mode needed to approximate a specific resonant frequency?

So, one of my D&D characters has a cut/relief-carved quartz crystal amulet (medallion shaped) that's both an arcane focus (crystal) and a holy symbol (amulet), and I thought it would be a good ...
2
votes
0answers
36 views

Where do hydrothermal vents form inside icy ocean worlds?

Context: In a near-future version of our solar system, humans have established multiple underwater colonies on Jupiter's moon Europa. These outposts either hang beneath the icy crust, or they are ...
2
votes
1answer
141 views

How would a slip-strike fault develop in my terrain?

I am designing a fictitious continent, and as part of this I am also designing the prehistoric development of the continent up to the present day. A particular tricky part of this has been that, in ...
2
votes
1answer
153 views

Software for creating a 3D planet

(Sorry for my english, it's not my native langage and i use translate google...) I am looking for one or more software to create a sphere in 3D with longitudes, lattitudes, etc. Rotate this sphere. ...
1
vote
2answers
50 views

Ideal Materials for Laser / Energy Weapon Defense

In most future sci-fi settings, it is apparent that laser weapons (or as Star Wars likes to call it, blasters) and energy weapons in general would have replaced most standard ballistics for main ...
1
vote
0answers
46 views

Proofing dragons against their acidic breath weapon 2/2: Preventative measures

So, I decided to find an alternative breath weapon for my dragons, that maximizes destructive potential, for the least amount of weight. That's how we arrived at aqua regia, an insanely strong acid ...
1
vote
1answer
43 views

How would chemosynthesis using ammonia(NH3) work?

On a terrestrial planet with a high amount of ammonia vapor in the atmosphere, would any organism have a strong enough incentive to develop some form of autotrophic chemosynthesis that derives energy ...
1
vote
0answers
312 views

Feasibility of The Absorbic Bomb from The Killing Star

I have come across a weapon by The Killing Star, which is called the Absorbic Bomb. Apparently, it reverses the formula E = mc^2, of how matter is converted to energy during standard nuclear blasts, ...

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