*****HELIOS-SIZED SPOILERS!***** The AppleTV series “For All Mankind” returns for a 4th year, time-jumping from season 3’s alternate-1990s into an alternate-2003. In this road-not-taken future, where the Russians beat Americans to the moon in 1969, manned spaceflight has rapidly turned commonplace, with the Moon and Mars offering 21st century gold rushes to those with the…