In the avatar universe, the interstellar starships can reach 0.7 C / speed of light using Antimatter - Matter engines. We currently understand enough about Antimatter physics to know such engines and speeds are theoretically possible.
Therefore, the time of flight to Prox A, ~4 light years away, should roughly take ~6 years.
gyunikumen t1_j2cguh1 wrote
Reply to comment by maria_slayer in Could we find a Pandora-like planet in real life? by lemonny3663
In the avatar universe, the interstellar starships can reach 0.7 C / speed of light using Antimatter - Matter engines. We currently understand enough about Antimatter physics to know such engines and speeds are theoretically possible.
Therefore, the time of flight to Prox A, ~4 light years away, should roughly take ~6 years.