The universe is just incredibly vast and full of stuff we're only scratching the surface of detecting. Every so often, though, there are some folks who think we've learned it all -- or that there's not much more left to figure out. But there's always more. The pace of technology might not advance fast enough for us to be able to continue to discover new things at the rate we've been doing so, but the "peak science" event probably hasn't happened yet (or may not happen at all).
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