OUR COVERAGE OF THAT HISTORIC LAUNCH WITH OUR TOM COSTELLO. >> SEVEN. RS-25.FOUR, THREE, TWO, ONE. BOOSTER IGNITION AND LIFTOFF. THE CREW OF ARTEMIS II NOW BOUND FOR THE MOON, HUMANITY'S NEXT GREAT VOYAGE BEGINS.>> Reporter: ROARING OFF, THE FIRST TEST FLIGHT OF THE ARTEMIS GENERATION. >> GOOD PERFORMANCE. >> Reporter: NEVER BEFORE HAS A ROCKET SO POWERFUL LIFTED OFF FROM THE KENNEDY SPACE CENTER WITH HUMANS ON BOARD.>> INTEGRITY, THREE MILES IN ALTITUDE, TRAVELING MORE THAN 1200 MILES PER HOUR. >> Reporter ...