So your point is to send a few batch of human to Mars? Why would we do it... God has gave us more than enough for us. Earth, is somewhat a much resourceful planet than wat human can use... (Despite the fact that we overuse and negatively use them) I'd rather spend the $$$ educating, or probably *transport all the resource from mars to earth"

Yes that's the first step towards any useful spaceship, but the issues with radiation in space have not been solved yet by any means. Propulsion is the next problem, we have nothing that's remotely efficient when it comes to propulsion (ion ones are nice and everything but they're slow...... not much acceleration at all, and you can dream on when it comes to antimatter, we only make less than a nanogram of antimatter each year, and nothing much's going to change on that front either)

Good point. Maybe we'd crash into it. Or send drop-pods like in C&C.

IIRC, if you create matter out of pure energy, anti matter will appear, since they're like twins of each other, evil one that is.

Nuclear fission produces a tiny amount of anti-matter too but it's so little that, bgeh's mentioned 'nanogram' sounds like a few megatons in perspective

Space exploration is possible if we can achieve a self-sustained ecosystem on the ship or so. Energy will be important as everything solid can be recycled into their original state with the proper amount of energy. Can't rely on solar, no sun no juice. Fusion is good but there aren't proper working generator and it also require fuel.

You will also need to have enough material in cycle to sustain life. If say an entire ship will depend on grain as food, you'll need to have enough of grain to feed the human while newer grain grow and so on.

After all that, you have to handle the ravage human instinct. Munity is just too stupid if you're on a mission to save human race.

Headache

I think in one of those proton colliders if I remember correctly. Got one that just open in Europe? One of the largest spanning kilometres underground. Some people are worried they might generate tiny blackholes 
Of course it only exists for a short span of time being being consumed in the same process or something like that, can't remember.

That's a different concept. We've been producing antimatter regularly for say, 30+ years now, and they're stored using magnetic 'bottles' to separate them from matter.

Black holes being produced at the LHC is an entirely different matter though.