K
keith1
Guest
What about a star chart, we are here, we sent you a signal you can pick this signal up at these coordinates, monitor this area and you will hear the signal? Instead we get something that would take just as long to accomplish. Travel to our planet, and fold some wheat.
We've exhausted the subject so you want to change it.
Any geologic probing of a planet for future deep core mining would begin with surface markers left for later extraction/entry locations. Who cares about your wheat?