In a Debrief exclusive, Ralph Blumenthal and Leslie Kean report that a former official says the U.S. has retrieved craft of non-human origin.

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  • supermangoman [he/him, they/them]
    ·
    1 year ago

    The timescales can work in the other direction as well - a self replicating Von Neumann probe could have a presence in every star system within a million years or so, even while traveling at sublight speeds.