All Questions
18 questions
4
votes
3
answers
378
views
An Earthlike World Placed Around a Blue White Dwarf
A star that is bright, gives off blue light, and can have a world that mimics conditions on Earth is tricky. I'm hoping I can get one around a blue-colored white dwarf star.
What does the arrangement ...
- 64.4k
4
votes
1
answer
98
views
Planet Orbital Zone and Year Length
So I'm building a fantasy world that takes place on a planet with a circumference of about 18,500 miles (it's average temperature is 40℉), and it orbits a Blue-Giant.
How long would a year be, and how ...
- 79
7
votes
8
answers
2k
views
Is life feasible in an inhospitable binary system?
There is a planet orbiting a binary system inside the Goldilocks zone. The problem is that the binary system is of a violent kind. It either regularly explodes and sterilizes a portion of the planet's ...
- 725
2
votes
2
answers
233
views
What kind of star will work for my system?
After what feels like forever and after asking several questions (like this, this and this), I believe I may have decided upon a suitable orbital system for my world:
$M_{S}=2.272\;571\;144\;5 \times ...
- 6,322
16
votes
4
answers
2k
views
What is the theoretical maximum number of habitable planets in one solar system?
In the DC comic book universe, the Vega System is a solar system around the star Vega (Alpha Lyrae), which is depicted as having dozens of habitable planets. While it seems to be an implausibly large ...
- 5,372
3
votes
5
answers
662
views
How can this habitable planet have a moon with a naturally occurring atmosphere?
Assuming the planet is earth-like, with more surface water and atmospheric oxygen, and within the habitable zone of a sun-like star, how can a moon orbiting this planet retain a thick atmosphere?
The ...
- 1,193
5
votes
3
answers
3k
views
What is the Habitable Zone of a Red Dwarf star?
This question is pretty straightforward:
What is the minimum and maximum distance for a planet to be in the habitable zone of an average sized (not biggest, not smallest) Red Dwarf star?
- 1,891
6
votes
2
answers
1k
views
Planet Orbiting a Red Dwarf
I'm trying to create my planet orbiting a red dwarf, honestly I've thought other scenarios but it's like every answer opens new questions. I'll just say what I want my planet to be and I'd like your ...
- 63
2
votes
2
answers
1k
views
How many habitable planets can I fit into the habitable zone of a Sun-like star and still be stable? [duplicate]
The habitable planets will be very similar in size to earth and are on separate orbits orbiting a Sun-like star exactly the size of our own Sun. How many habitable planets can I fit into the habitable ...
- 29
4
votes
2
answers
382
views
Habitable planet in a multistar system
I'm trying to design a world in the Alcyone A system of the Pleiades.
Alcyone A consists of three stars. The main star is 3.4-3.8 solar masses.
There is a very low mass star < 15 million miles ...
- 63
6
votes
1
answer
281
views
Could life develop in this ternary sytem?
Here is a link to an online animation of stars' movements in a trinary system.
Basically, the three stars are orbiting around a barycenter; one (yellow in the animation, mass = 1) closer to it and ...
- 937
5
votes
2
answers
545
views
How many Mars sized planets can form and remain stable in the habitable zone of a Sun-like star?
By Mars sized I mean with masses between 0.10 (M⊕) and 0.25 (M⊕), the planets need to have independent orbits around the star. We can assume the habitable zone stretches from 0.70 AU, to 1.5 AU for a ...
- 2,319
2
votes
2
answers
468
views
Minimum distance a planet can remain habitable from a sun-like star?
This one source is stating a desert planet the size of Earth could maintain habitability at 0.38 AU from a sun-like star, but I highly doubt this is possible. What are some factors that could make ...
- 2,319
6
votes
2
answers
388
views
Is it in any way possible to make a habitable (or colonize-able) corkscrew planet?
Is there any way to make a planet with a corkscrew orbit (like this) that could host a sci-fi civilisation? It'd be amazing if there was a way to make life arise naturally, but colonize-able works ...
24
votes
6
answers
2k
views
Close the door on your way out - Life lit by a blue dwarf star
I'm seeking a hard science setting for a piece of xenofiction with a decidedly non-sciencey feel. That said, there is no magic or magic technology.
The idea is as follows:
A red dwarf star has a ...
- 4,198
22
votes
3
answers
3k
views
Making a planet habitable for humanoids: The planet
The question:
What characteristics are necessary for a planet to be habitable for humans? What should the generic star and planet be like?
The life forms are human, so they
Need to have access to ...
- 102k
19
votes
1
answer
2k
views
Making a planet habitable for humanoids: The star
The question:
What characteristics are necessary for a planet to be habitable for humans? What should the generic star and planet be like?
The life forms are human, so they
Need to have access to ...
- 102k
25
votes
4
answers
7k
views
Can a gas giant have its own habitable zone?
Gas giants can generate heat via the Kelvin-Helmholtz mechanism. It's oft-repeated that Jupiter actually generates more heat internally via this method than it receives from the Sun. Scale this ...
- 2,205