>>27
Gravity between your body and the Earth keeps us on the ground, and the electrostatic repulsive forces between your feet's atoms and the ground's atoms is what keeps us standing, and not falling through the ground in a sense.
Forces cannot exist simply for one point object; they must be between two or more objects, even internally within one system (your body and the Earth is sometimes one mass system). Force fields, however, can be created by a point object (e.g. electrons/protons/positrons create electric fields when static, magnetic fields when dynamic).
It's a cool thought. But the Moon is a LOT closer to Earth than this diamond planet, which is 4000 light years away. That's like 1000 times further than the nearest star. Its like if JFK had said "Forget the moon, lets go to Pluto".
I wish there was political motivation to explore space but even if there was this planet would be very low down on the priorities list, considering there are plenty of desirable materials much closer to Earth in our own Solar system. And anyway, wouldn't bringing that much diamond back home and flooding the market really mess with the global economy?