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  • Not a single act, but a series of actions. The rovers power down during Martian nights, right? So, during these periods, you could rearrange the rocks nearby. At first, NASA might not even pick up on the changes, but eventually, someone's bound to notice.

    Imagine the buzz it would create! The scientists studying the photographs sent back by the rovers would be left scratching their heads. They'd probably first suspect some unknown natural phenomena, or even the rovers themselves, until the changes became too orchestrated to explain away. It would be a cosmic puzzle, a Martian mystery that would have them combing through data for answers.

    No extraordinary or unnatural objects, just ordinary Martian rocks moved around. Instead of presenting them with an object that screams 'alien intervention,' you'd be nudging them into a mystery, all with the Martian surface's naturally occurring elements.

  • I'm thinking either the golden disk from Voyager, or the puzzle box prop from Hellraiser.

  • If I would have to put it now to be discovered in - lets say- next week - black monolit from Space Odyssey

    If i could put it back in time - replika of some ancient piramid with gliphs stating that human flow to Mars to help martians to build the pyramid

  • A pen lid with the long bit broken off, a shopping trolly token, 1 threadbare sock, a novelty rubber (eraser), and one of those black twisty wires that are used to tie up new USB cables, all sealed in a sandwich bag with 'aubergine curry' written on it in janky handwriting.

    Why all this random rubbish? Because it'll absolutely screw with their brains!

104 comments