What would the consequences be of a high number of solar systems being within close proximity to one another? I'm mainly interested in the consequences for life on multiple planets. When I say 'close proximity' I mean the stars all being between 1000-100,000 AU apart from one another, and roughly all being G-category stars?
I'm trying to create a setting where the distances between other exo-planets is not as vast as our own relative position in the galaxy, due to the issues limiting light-speed space travel.
The effects I am taking note of are:
- Gravitational effects (how much the stars will be attracting one another, and how it will affect planetary orbits)
- Stars heating planets
- The amount of light being received by close stars
Would habitable planets be able to survive with such a dense amount of stars nearby? If so, what are other variables to consider that would change the planets features?