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What is Nasa doing to create fusion energy spaceships and why should we want them?

Fascinating.
http://www.space.com/21519-nasa-fusion-rocket-space-exploration.html

1680 day(s) ago

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Kravenhead
A lot, and we need them because current methods are way too slow.
6 or 7 months to get to somewhere as near as Mars, and then an equal amount of time to get back, is really unacceptable.
The longer it takes, the more stuff you need to carry along.
Not to mention, that much time spent in space is really unhealthy for the crew.
We could probably develop artificial gravity by spinning the craft, but there are still radiation exposure issues.
In short, we need to get where we're going as quickly as we can.

Here's a simulated mission to Mars flight path.





It seems like the long way around, but it uses gravity to slingshot the craft, which increases speed with less fuel.

Posted 1680 day(s) ago

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Question Title What is Nasa doing to create fusion energy spaceships and why should we want them?
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