"aquablue" wrote in message ...
How many sun like stars are in this galaxy -- on average?
Thx
alan
I assume you mean "at a guess".
The galaxy has roughly a hundred billion stars. (All these numbers
could be off by a factor of 2 or so. Take with a grain of salt.)
You'd have to define what's meant by "sun-like star". The number of
F, G, K main sequence non-multiple-system stars that are between .75
and 1.25 solar masses is probably something like two percent of the
stars in the galaxy. So roughly a billion, give or take. It's much
more likely to be 10^9 than 10^10 or 10^8, anyway.
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