All Questions
9 questions
19
votes
6
answers
776
views
Can my spaceship figure out its position using Cepheid Variables?
In my story, reasonably far in the future, an intrepid group of explorers are on the first manned mission to the Andromeda galaxy, travelling close to the speed of light. They slumbered in suspended ...
- 102k
9
votes
3
answers
969
views
Can a larger mass of stellar engines move a galaxy's dark matter?
There have been ideas about moving galaxies, if all of the needed stars and black holes become stellar/black hole engines but due to the 1:5 ratio of matter and dark matter there will not be enough ...
- 830
8
votes
2
answers
293
views
Randomly generating plausible star types for a synthetic galaxy?
I'd like to randomly generate between 1 and 20 million stars for a spiral galaxy resembling our Milky Way. This is of course far fewer than our galaxy (estimated between 150 to 300 billion), but I'd ...
- 12.6k
6
votes
4
answers
1k
views
Life on planets near quasars
To be very-very simple:
The very main setting of my world is a very special and very small galaxy, the galactic core of which is a quasar - with the "iconic" light beam in the middle, serving a ...
- 5,386
4
votes
2
answers
605
views
Would an increase in star density affect the "Goldilocks Zone"?
Let's say that there's a solar system that matches the description of Sol exactly, save for the fact that it's 20,000 light years closer/farther to the galactic center.
Would the zone of one ...
- 454
3
votes
2
answers
834
views
Is it possible for a future civilization to concentrate the galaxies (or some of them) of the universe?
In the world I describe there is not much time left before the expansion of space takes its toll. Galaxies are already accelerating away from each other on a negatively curved spacetime. The expansion ...
3
votes
2
answers
138
views
How Would An Advanced Alien Civilization Expand the Lifespans of Giant Stars (Nearly) Exponentially? [closed]
Long ago, in some distant galaxy, an advanced civilization had turned a small, young elliptical galaxy into their own astronomical playground. They seemed to have come up with a way to prolong ...
- 14.9k
2
votes
4
answers
284
views
What configuration should the worlds of a long lasting galactic empire take in the galaxy?
I have come across many galaxy maps showing the dominion/borders of one empire or another in different works of fiction. The first that comes to mind is WH40k for which the galaxy map of the different ...
- 608
-2
votes
2
answers
113
views
what cosmic event could teleport a solar system? [closed]
In a project I am mulling over, humanity now inhabits the dense core region of a globular cluster. They did not colonise this cluster; some cosmic event actually teleported the sun, moon and earth (...
- 8,691