For the first time in half a century, countdown clocks began ticking Monday toward launch of a three-man one-woman crew on a trip to the moon and back, a major step in NASA's accelerated drive to establish a lunar beachhead with landings in 2028, followed by construction of a moon base.With forecasters continuing to predict an 80% chance of favorable weather, Artemis II commander Reid Wiseman, Victor Glover, Christina Koch and Canadian astronaut Jeremy Hansen hope to strap into their Orion capsule and blast off atop a giant Space Launch System rocket at 6:24 p.m. EDT Wednesday. Photographers set up remote cameras near launch pad 39B at the Kennedy Space Center on Sunday to capture the huge Space Launch System rocket as it blasts off Wednesday, sending four astronauts on a trip to the moon.…