New answers tagged

-1 votes

Severed Space Elevator

With a break near the ground, not really much. The cable above the break would likely end up "Falling up" and away from the planet, and there's not much below the break. If the break was ...
Bubbles's user avatar
  • 42
1 vote

I have a world with two moons, and I was wondering how often they would both be full at the same time

The duration of a sidereal year of the planet is given as "about" 1.4 Earth years, or about 1.4 × 365.256 ≈ 511.358 days. Then the duration of a full cycle of phases for Satellite One is 17 ...
AlexP's user avatar
  • 89.1k
3 votes
Accepted

I have a world with two moons, and I was wondering how often they would both be full at the same time

If you have multiple moons and want to keep track of them, I'd suggest using a fantasy calendar. With one, you can get the exact places of the moon, as well as other helpful features. There is a ...
ShadowOfHassen's user avatar
3 votes

What are some things to keep in mind while designing a binary planet system with a sun-like star?

Rule of Cool Worldbuilding is an Art, an art of the fantastic. The main thing you need to keep in mind is quite simply: is this a true representation of my imagination? As an artist, your main goal ...
elemtilas's user avatar
  • 40k
0 votes

How is this possible: a moon with A) large apparent size B) that spins C) spins in a 5:1 spin-orbit resonance?

After our moon's formation, it took on the order of 100 million years for the moon to become tidally locked to Earth. That is a long time. If celestial motion is literally orchestrated to seem perfect,...
bobsbeenjamin's user avatar
4 votes

How is this possible: a moon with A) large apparent size B) that spins C) spins in a 5:1 spin-orbit resonance?

Your question is basically whether a 5:1 spin-orbit resonance is possible, and the answer seems to be 'yes', even if we don't have any confirmed existence proof in our own naturally created solar ...
geometrian's user avatar
  • 1,738
9 votes

How is this possible: a moon with A) large apparent size B) that spins C) spins in a 5:1 spin-orbit resonance?

TL;DR While a 5:1 resonance between the rotation of the Moon and its orbital period is possible (albeit quite unlikely), it won't help. Long explanation A lunar month, or a lunation, is the time ...
AlexP's user avatar
  • 89.1k
-1 votes

Can you have a moon that rotates 21 times per orbit?

This all is possible, but so the numbers (both nominator and denominator) grow in the ratios, so is becoming the orbit lesser and lesser stable. But still there are interesting ratios. For example, ...
Gray Sheep's user avatar
  • 3,646
1 vote

Can you have a moon that rotates 21 times per orbit?

This is one of those "yes, but..." moments. Trivially, it is entirely possible to have fast-rotating moons... as JBH pointed out in the comments, Pluto's moon Hydra has an orbital period of ~...
Starfish Prime's user avatar

Top 50 recent answers are included