1 00:00:00,960 --> 00:00:12,160 NASA launch commentator: Ten, nine, eight, seven, six, five, four, three, two, one, zero, 2 00:00:12,160 --> 00:00:15,040 ignition, liftoff. 3 00:00:20,960 --> 00:00:27,040 Flight commentator: Vehicle is pitching downrange. 4 00:00:53,280 --> 00:00:58,710 Stage one throttle bucket. 5 00:00:58,720 --> 00:01:01,400 Power and telemetry normal. 6 00:01:05,400 --> 00:01:08,840 Commentator: For those of you just joining us, you are watching a live view 7 00:01:08,840 --> 00:01:13,160 of the Falcon 9 rocket as it ascends through the atmosphere, carrying the SpaceX Dragon 8 00:01:13,170 --> 00:01:14,670 capsule to orbit. 9 00:01:14,670 --> 00:01:22,039 The vehicle just passed through Max Q, which is the point of maximum aerodynamic pressure 10 00:01:22,039 --> 00:01:24,259 on the vehicle. 11 00:01:24,259 --> 00:01:28,500 As you can hear in the background, the excitement at SpaceX headquarters is unbelievable here. 12 00:01:28,500 --> 00:01:33,939 Flight commentator: Stage one throttle is passing through Max Q. 13 00:01:33,939 --> 00:01:37,659 You heard that callout for Max Q on the nets. 14 00:01:37,659 --> 00:01:41,990 The Falcon 9 actually throttles down its nine Merlin engines to reduce aerodynamic loads 15 00:01:41,990 --> 00:01:42,990 on the vehicle. 16 00:01:42,990 --> 00:01:51,579 It is now throttling those engines back up. 17 00:01:51,579 --> 00:01:56,740 Coming up at T-plus two minutes and 35 seconds is going to be three events in quick succession. 18 00:01:56,740 --> 00:01:59,749 The first one is going to be the main engine cutoff, or MECO. 19 00:01:59,749 --> 00:02:04,090 That’s when the nine Merlin one v engines that you can see on your screen right now 20 00:02:04,090 --> 00:02:11,810 will cut off shortly before a stage separation at two minutes and 38 seconds. 21 00:02:11,810 --> 00:02:15,640 Shortly after that, the Merlin vacuum engine on the bottom of the second stage of the Falcon 22 00:02:15,640 --> 00:02:19,020 9 will ignite and will be called second engine start, or SES.