Deep Space Exploring

[KASASpace]

So, which way of exploring Deep Space should we attempt:

1.) Build something akin to NAUTILUS-X

2.) Go DIRECT

3.) Start using in-space fabrication craft for ISRU

I would say a combination of 1 and 3, but what do you guys propose?

Any combo of the three will be a good answer.

(Other options added by the community will be present eventually, as long as they make sense)

[SargeRho]

How about all 3, depending on the destination? Go Direct to Mars, Build Nautilus-X for long term exploration of the inner solar system and perhaps the outter planets, and if possible, do it with in-space fabrication.