What drives would make Casual Interplanetary Travel possible?

I am currently trying to make a world that has casual interplanetary commutes with near future technology (within one century); so, to find a reasonable top speed for crafts in my interplanetary world, I -

• found the farthest major body technically orbiting the Sun (in this case, Sedna)

• calculated its distance from the Sun in Astronomical Units (940 AU at aphelion - its farthest point from the Sun)

• converted that into time taken at the speed of light to reach x object (in this case, 6 light days to travel)

• and divided it by the upper bounds of how long a person would spend traveling to one destination during the early modern period (600ish days) - giving me a total of 1.57 AU per day, or 1% of the speed of light

Given the technological constraints of a near future civilization and time parameters, what propulsion technologies would allow the citizens of such an civilization to travel at 1.57 AU per day?

Important Notes -

Survivability is not an issue, assume everyone is a trans-human

Cost is also not a issue, I can handle the space-economics

Speeds reaches should be relative to an outside observer

posted over 6 years ago

System‭

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