Cosmic Armory adds some new materials dropped down to your realm directly from space. You can actually take what you mine from meteorites and make a new ore from it!
You’ll also be able to collect cosmic dust with the dust collector. With that dust you can smelt it down to a comet tail ore. It’s a weaker ore but it’s easy to come by.
And you can even mine for bedrock with the bedrock miner. Use the rock you collect to make dense steel ingots in the same cosmic furnace process.
And with these new materials you can make new armors and weapons each with their own strengths and some even give buffs while wearing them!