Re: [GZG][FH] Planet types (was Re: Locations of Stars)

Tony Wilkinson wrote:

> 1) Planets without magnetic field.

IMHO, too hazardous to attempt to extract any resources no matter how
valuable.  Hence if you want them, the NRE won't stand in your way.

> 2) Planets without atmosphere.

> 4) Planets with low gravity. (I'm thinking moon here)

Editorial note:  If you've got too low a gravity (moon, for instance)
you will likely overlap with above category.  Or the atmosphere will be
some sort of wierdo exotic compound mix.  Or atmosphere will be thin.

Additional category:  Smaller/Larger planets than Earth (ties in closely
with gravity). Horizons!  On a Traveller Size 5 world, the horizon is
4km away.  This obviously limits visibility and hence max range of
weapons.

John M. Atkinson