I'm quite excited about the different groups trying to reduce manufacturing cost...

I'm quite excited about the different groups trying to reduce manufacturing costs of antimatter and use it for space propulsion.

Positron Dynamics is putting up a cube sat in the near future to demonstrate feasibility.

Generating antimatter is easier in space and using it instantly gets rid of storage hassles.

The amount needed for a trip to Mars would be around 10mg, the journey time would be measured in weeks.

Possibly the best hope there is for constant acceleration spacetravel.