[ExI] extropy-chat Digest, Vol 90, Issue 29

[Keith Henson]

On Tue, Mar 15, 2011 at 12:48 PM,  Stefano Vaj <stefano.vaj at gmail.com> wrote:

> On 13 March 2011 16:15, Keith Henson <hkeithhenson at gmail.com> wrote:
>> That takes raising the exhaust velocity to~ 9 km/sec and the only way
>> we know to do that is beamed energy.
>
> Why nuclear would not work?

Too heavy, though it was considered.
http://en.wikipedia.org/wiki/Nuclear_thermal_rocket  and search for
Dumbo.

Plus there is the little problem of having one of them crash.

Keith