How about compressed matter like in the denser end of stars?
so after 4 LY of lead they will be stopped. good to know
@Zuriel We also have *no idea* how much energy a gravity field generator would need as they don't currently exist.
@Zuriel The detectors are only 2.5km down, the deepest hole ever is a russian borehole and that's only 12km deep.
For example,Neutrino particles are capable of going through 3 LIGHT YEARS OF LEAD (approximately) without any trouble. There is a lab on Earth where scientist are doing research on that phenomenous particles,and the detectors stretch down for ~13 kilometers.
Yes,pulsar would just melt the planet upon approaching it,plus,any incoming radiation nearly unstoppable,i am not even talking about reflecting it.You would need stron gravity fields to do that,wich wastes ALOT of energy to work.
I woudldn't exactly say the existing terrain is bad, but it needs deco and a bit of mixing. Its reasonable for it to be mostly flat.
@Pinhead11, It's not venting, but ok.