Hello guys, I have a small problem and I hope someone can help me. I have a bit of information I want to "engrave" into this planet till our sun melts it down in 4,5b years. It's not important if someone finds it, wouldn't be possible anyway, but I want it to be 'somewhere' on or in this planet for an eternity. Well, it's about someone who died recently, just as an explaination why I am weird like that :) But how to do such a thing. What material, and if the object is still there would the engraved part be there as well? A plate of titanium steel with a couple of engraved words... when will time destroy such an object? Would something else be better? What options would I have? Where to put it. I thought on the bottom of an ocean, where no human will ever pick it up and deliberatly destroy it, so that it can become part of the planet. But can I expect it to be crushed or end up in some magma sea and molten down? Shooting it into space would be perfect maybe (although it would not be part of earth then), but to my knowledge you cannot do that yet as a private person (waiting 20 years could be a problem for me, so I have to exclude that). I admit, I have no clue about those things. How to preserve information for 4.5 billion years? Or at least as long as possible, even if it's just a couple of million years. What is our best shot right now. Idea's would be appreciated. I would spend a couple of thousands for it, if necessary.