All Questions
15 questions
3
votes
2
answers
336
views
Habitable zone of this red giant
I have a Red Giant star of about ~4.15 solar masses (a number I generated from what I found to be the average size of red giants).
My question for right now would be "What would be the habitable ...
user104078
5
votes
4
answers
1k
views
Could sapient life evolve in 2 billion years?
I am imagining a race of beings called Loshp, who evolved on a planet orbiting an F-type star. These stars live for only 4 billion years tops before evolving into a red giant, and half that time was ...
- 8,691
6
votes
3
answers
347
views
Blue star adaptation
If life did evolve on a planet around a blue star, what sort of adaptation could be expected? I so far have the autotrophs being yellow/orange or blue to absorb the light. I also thought the animal ...
- 3,202
2
votes
2
answers
155
views
Blue star vision
For sake of argument, let's assume life did evolve on an earth like planet around a blue star. I have this idea that the animal equivalent life wouldn't have color vision so to let in less of the ...
- 3,202
6
votes
3
answers
220
views
What evidence could reveal to aliens that their sun is the result of a binary star merger?
The answer to a previous question suggested life could have the time to begin and evolve on a planet orbiting a blue star if it was at first a binary pair that merged. The technical term is a blue ...
- 3,202
7
votes
2
answers
855
views
How would I make a natural, long-lived red giant star?
I have a system in which the main habitable planets are on the many moons of a super-neptune. The ice giant has not migrated inwards, but rather the habitable zone has expanded outwards due to the red ...
- 547
6
votes
2
answers
213
views
Life without a bright star?
The main source of free energy that allowed life on Earth to develop was our sun. It bombards the planet’s surface with photons of high energy, which provide activation energy for reactions necessary ...
- 3,351
7
votes
2
answers
681
views
Life around Cepheid Variable stars
Are there any unique challenges life would face evolving on a planet orbiting a Cepheid Variable star? I'm aware this is a broad question, so to narrow it down, consider this a question about Great ...
- 14.4k
1
vote
1
answer
364
views
What would a life form that evolved in deep space and without gravity look like? [closed]
Somehow the following hypothetical life form evolved in deep space with a long lifetime. It lives in a low orbit around massive stars, reproduces by eating interstellar gas and dust and uses the ...
13
votes
3
answers
792
views
Can life arise on a brown dwarf?
Brown dwarfs are celestial bodies in the gray area between planet and star.
They're huge, gaseous, hot compared to planets, and come in all different kinds.
(1) Is it possible for life to develop in ...
- 20.6k
2
votes
2
answers
1k
views
Would it be possible for a planet orbiting a blue supergiant to develop intelligent life?
In Halo series there is an intelligent race called Unggoy that evolved on a planet caled Balaho orbiting a blue supergiant called Tala, I would like to know if it would be possible for an intelligent ...
- 2,319
3
votes
1
answer
241
views
Can life evolve on planets of this binary system? [closed]
I am considering a system with a primary star and a secondary star. The secondary star orbits the primary star very much like a planet, that means with a somewhat big distance from the primary star. ...
- 45
5
votes
1
answer
349
views
What is the fastest amount of time a technologically advanced species can evolve?
I am creating a hypothetical race of aliens native to a planet orbiting an F class star; the mass of the star is 1.50 (M☉). Would this star live long enough to allow the evolution of intelligent life ...
- 2,319
8
votes
3
answers
1k
views
Red giant Habitable zone
I was looking a bit at the evolution of Stars and one thing I sometimes see floated is this idea that in the far flung future, when the sun has ballooned into a red giant and the earth burned to a ...
- 766
5
votes
2
answers
2k
views
Animal life on a planet orbiting a red dwarf
I am envisioning a world around a red dwarf star. The planet has violent and accelerated (due to higher geological activity) plate tectonics and has a magnetic field about 75% the strength of the ...
- 11.9k