Joe is Vanguard's global chief economist and head of Vanguard Investment Strategy Group. He's also a member of the senior portfolio management team in Vanguard Fixed Income Group.
Apollo missions took about three days to reach the moon. But the quickest trip to the moon was the New Horizons probe, which zipped past the moon in just 8 hours 35 minutes on its way to Pluto. However, the spacecraft didn't even slow down or approach lunar orbit. Tidal forces.
Answer Wiki. Robert Frost has mentioned about the travel times (4.5 days and 3.5 days, from earth to moon, from moon to earth respectively). I will venture to answer your other questions. The return trip to earth requires less fuel as it is the heavier body and hence its gravity is much stronger.