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Tailtappin2 karma

Love everything you do and spend a lot of time watching your appearances in science docs.

As for the question, what can you tell us about propulsion ideas for interstellar travel? I know there's nothing truly practical on the horizon but is there anything plausible in the hypothesis stage?

Also, as an aside, how convinced are you that dark matter and dark energy are real things as opposed to misidentified or poorly gauged known phenomena?