Is there a technological difference between going half light speed and near light speed?

Assuming a civilization has the capacity to build space vessels designed to travel from one solar system to another, what is the technological difference between traveling at 50% light speed and traveling at 100% light speed (or near)? And then, what kind of technological leap is required to go beyond light speed? The idea is not to have "hyperjumps" but that there is a constant speed most ships can go. So traveling 4 light years takes 4 years at light speed. Takes 8 years at 50% light speed. you get the idea.

I am trying to decide how technologically advanced humans in my space-travel-based universe are. Would it make sense to say "We are only advanced enough to go x% of light speed"? Or is Light-speed the real barrier here? What are the limiting factors to going very fast (subluminal)? Assuming light speed is the real barrier, would anything really stop anyone going near light speed given enough fuel and distance to reach that speed?

posted almost 7 years ago

Premier Bromanov‭

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