On Oct 5, 3:14*pm, wrote:
New Fusion Engine Could Cut Travel Time To Mars Down To Six Weeks:

"Brace yourselves: Researchers at University of
Huntsville in Alabama say they are using "Dilithium
Crystals" in a new fusion impulse engine that could
cut the travel time to Mars down to as little as six
weeks, not the six months it takes now.

Txchnologist, an online magazine sponsored by
General Electric, talked to team member and
aerospace engineering PH.D. candidate Ross
Cortez, he said "The fusion fuel we're focusing
on is deuterium [a stable isotope of hydrogen]
and Li6 [a stable isotope of the metal lithium]
in a crystal structure."

"That's basically dilithium crystals we're using,"
he said.

Trekkies everywhere shudder in delight.

See:

http://www.businessinsider.com/newes...powered-on-sta...

William Mook (aka Mokaerospace or Mokenergy) had that option proposed
as of a couple years ago.