For SpaceUpClose.com & RocketSTEM KENNEDY SPACE CENTER/CANAVERAL NATIONAL SEASHORE, FL –  The countdown has begun ! –  as NASA restarts its new plan to proceed with a modified version of the critical countdown and fueling test known as the Wet Dress Rehearsal (WDR) for the first ever Space Launch System (SLS) Mega Moon rocket rolled out to its launchpad atop