[ExI] Breakthrough Starshot - To The Stars!

[Adrian Tymes]

Having now seen his presentation in person - I still say it's likely to be
a high-glitz, not-much-actual-spaceship, but not for lack of trying.
They've put serious thought into a lot of things (for instance, the high G
I mentioned is a worry, but for the sail/array; they have MEMS sensors that
can survive that acceleration).  But in the end, Yuri admitted he's doing
this approach because it's cool.

That said, they do have a chance - *if* they stick, rigorously, to the
pattern they mentioned of starting with near-Earth spaceships, then going
further and further out, with the eventual goal of an interstellar probe.
They'll be forced to develop practical, even profitable, uses if they do
that path - and once they have that, that'll clear their main non-technical
obstacle.
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