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Possibly, but without more information, thats only speculation. If that is the case I would advise using the rocket he used to get to the moon in the first place to travel back to the overworld.
OP, personally, I'd check NEI as was suggested, and if no moon based alternatives are found, you're left with the option of cheating, dying (assuming your bed is still set on earth), or starting over.
In that case, you are either playing an very poorly designed modpack or you are not using your head.
*edit* I see the pack has exnihlo and exastris installed which I know you can use to get everything you need to make bronze. And I also know these mods are compatible with NEI so I dont understand how you could have missed it. It also features Minechem, dont know much about it but I am pretty certain you can use it to make just about anything. Which i think is the entire point of it being there, so you can make the things you need.