quote:
Originally posted by Dr. A. Cula:
[qb] You need to place robominer components in a satellite or ship and then move or deploy it in the asteroid field or empty planet. The mining process is automatic.
But I don't understand why the asteroid or planet lose value 
Well I constructed a ship and moved to the
belt - but how can I see that it works ?
And do I have just to move back to the
Planet when mining is done ?[/QB][/quote]
Dr A Cula, you are not only newby, I am a newby and a champion of newby rights!
Remote mining by the robo miners in your ship is completely automatic. Move the ship to the planet or asteroid belt and you should see a sort of pinky mine cart icon appear on the ship display panel (right hand side of the screen) - this indicates that remote mining is going on
Also, if you look in the empire status window, crown thingy top left panel, you will see that your empire is now gaining revenue from the remote mining
1 word of warning, at early tech levels, the income earned by remote mining may not match the maintenance cost of your ship so you need to keep a weather eye on this. When you develop large satellite tech, you can build remote miners into those and deploy satellites all over the shop.
As to why remote mining permanently reduces resource levels, dunno, that is just the game and one of the clever pros on this thread will need to answer that one