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4 votes

A calendar/timekeeping system based only on the stars?

It can be done, as long as you have clearly recognizable stars, and you will be using the period between recurring events related to those stars as time reference. In ancient Egypt, for example, the ...
L.Dutch's user avatar
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2 votes

F type and K type Star Binary

Short Answer: The K type star should probably be more than 10 times farther away from the F type star and the planet than in the question. Long answer: According to my calculations, a star with a ...
M. A. Golding's user avatar
1 vote
Accepted

How far apart ought my type-S binary stars be if each is to host a stable planetary system?

The two stars might have almost circular orbits around their center of gravity or highly elliptical orbits. The two stars will always be on opposite sides of their center of gravity. I think that each ...
M. A. Golding's user avatar
2 votes

How far apart ought my type-S binary stars be if each is to host a stable planetary system?

I don't have a value for you, but I am pretty sure 80 AU is not enough. The calculation of the sphere of gravitational influence is not a good measure for estimating the stability of the system, since ...
L.Dutch's user avatar
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