On a sunny day (Tue, 1 Nov 2011 11:58:54 -0700 (PDT)) it happened Brad Guth
wrote in
:

We do seem to have a fly-by-rocket lander gap, including the one of
our Apollo era that doesn't seem to work as we've been told. No doubt
those Long March landers will come in real handy, and we can rent them
for a million dollars per hour or per kg of payload (plus the usual
tax, insurance and fuel).

Btw, even 0.1 G worth of constant acceleration/deceleration is going
to make at least those most nearby exoplanets doable. Fusion rockets
such as those offered by William Mook should more than do the trick.

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I was thinking that if all those flights to the International Space Junk Station
had been used to build a huge nuclear powered interplanetary spacecraft....
then we would not have to burn it up in the atmosphere and endanger humanity
with the debris, but could fly to the planets with a travel time of only weeks.