So I have the following scenario for a story, and I want to know if it runs into any ridiculous no-nos from a scientific point of view:
There is an earth-like world orbiting a red dwarf (similar to AD Leonis, though it is not tidally locked. It doesn't have to be hospitable but does have to be habitable (there will be other factors drawing humans to this world). It's much colder than earth, maybe only habitable in a narrow band around the equator, and with a lower gravity (say 0.8 g, somewhere in that neighbourhood).
Smaller worlds are more likely to be in tight orbits around a red dwarf from what I understand so it'll be the third planet in the system with an orbital period of ~190 (earth) days (close enough to half an Earth year to make it easy to count). Days would be a bit longer, maybe 29 hours or so.
The most important parts are that it is possible to survive, if not exactly comfortably, outdoors, and that reaching orbit is at worst as much work as it is here on Earth. A smaller planet with lower gravity (assuming close to as dense an atmosphere as Earth) should make it a little easier to get things into space.
Here is the rest of the system (briefly), from star and going outwards:
- 1 hot molten (lava) world
- 1 cold rocky world
- 1 Earth-like world (described above)
- 1 gas giant
- 1 gas giant
- 1 cold gas world (Neptune-like)
- 1 tiny rock-world (Pluto analog)
- Cometary halo and asteroid belt