Interstellar mission spaceship designs require tens of megawatts per kilogram of power density

Project Icarus: Specific Power for Interstellar Missions Using Inertial Confinement Fusion Propulsion

Current chemical energy systems yield low specific energy which lead to energy conversion systems with a low performance design, less than 10 km/s.

Higher specific power drastically shortens mission times.

If you liked this article, please give it a quick review on ycombinator or StumbleUpon. Thanks