1 00:00:07,789 --> 00:00:05,660 what's up for September the moon hello 2 00:00:09,799 --> 00:00:07,799 and welcome I'm Jane Houston Jones at 3 00:00:12,950 --> 00:00:09,809 NASA's Jet Propulsion Laboratory in 4 00:00:14,690 --> 00:00:12,960 Pasadena California September 18th is 5 00:00:17,510 --> 00:00:14,700 international observe the moon night 6 00:00:19,490 --> 00:00:17,520 this annual event is inspired by last 7 00:00:22,550 --> 00:00:19,500 year's Lunar Reconnaissance orbiters 8 00:00:25,400 --> 00:00:22,560 journey to and orbit insertion around 9 00:00:27,769 --> 00:00:25,410 our moon images from its first year 10 00:00:31,550 --> 00:00:27,779 include all six manned lunar landing 11 00:00:33,680 --> 00:00:31,560 sites and close-ups of the lunar surface 12 00:00:35,750 --> 00:00:33,690 you can join astronomers around the 13 00:00:38,569 --> 00:00:35,760 world at lunar observing events and 14 00:00:40,460 --> 00:00:38,579 observe the 10 day old moon this is a 15 00:00:43,400 --> 00:00:40,470 night when many of the most recognizable 16 00:00:44,840 --> 00:00:43,410 lunar features are visible or you can 17 00:00:46,639 --> 00:00:44,850 even hold your own observe the moon 18 00:00:49,700 --> 00:00:46,649 event and you don't even need a 19 00:00:51,439 --> 00:00:49,710 telescope the moon takes about twenty 20 00:00:54,590 --> 00:00:51,449 nine days to go around the earth once 21 00:00:57,979 --> 00:00:54,600 and it also takes the moon about 29 days 22 00:00:59,780 --> 00:00:57,989 to spin once on its axis this causes the 23 00:01:03,500 --> 00:00:59,790 same side of the moon to always face the 24 00:01:07,130 --> 00:01:03,510 earth we can see the moon's far side 25 00:01:09,080 --> 00:01:07,140 only from spacecraft sometimes the 26 00:01:11,030 --> 00:01:09,090 moon's far side is referred to as the 27 00:01:15,200 --> 00:01:11,040 Dark Side of the Moon in poetry and 28 00:01:17,570 --> 00:01:15,210 songs but this isn't accurate as the 29 00:01:20,600 --> 00:01:17,580 moon orbits earth the portion we see 30 00:01:22,670 --> 00:01:20,610 illuminated changes the first phase 31 00:01:25,370 --> 00:01:22,680 called the new moon is just a sliver 32 00:01:28,310 --> 00:01:25,380 it's difficult to see it first but each 33 00:01:29,960 --> 00:01:28,320 night it gets bigger and brighter the 34 00:01:31,850 --> 00:01:29,970 next phase is called the first quarter 35 00:01:34,840 --> 00:01:31,860 because the moon has travelled one 36 00:01:36,770 --> 00:01:34,850 quarter of its 29 day orbit around Earth 37 00:01:38,599 --> 00:01:36,780 international observe the moon night 38 00:01:41,480 --> 00:01:38,609 falls halfway between the first quarter 39 00:01:43,399 --> 00:01:41,490 and the full moon a full moon is the 40 00:01:46,999 --> 00:01:43,409 next phase on the fourteenth day of the 41 00:01:49,760 --> 00:01:47,009 lunar cycle don't miss the full moon of 42 00:01:52,130 --> 00:01:49,770 September called the Harvest Moon it 43 00:01:55,279 --> 00:01:52,140 rises in the East just before Jupiter on 44 00:01:57,230 --> 00:01:55,289 September 23rd then the illuminated 45 00:02:01,160 --> 00:01:57,240 portion visible to a shrink stew the 46 00:02:03,169 --> 00:02:01,170 last quarter use this moon observing 47 00:02:05,280 --> 00:02:03,179 journal to record the lunar phases for 48 00:02:07,530 --> 00:02:05,290 yourself 49 00:02:09,749 --> 00:02:07,540 be sure to check out the international 50 00:02:12,090 --> 00:02:09,759 observe the moon night website and join 51 00:02:15,240 --> 00:02:12,100 me along with thousands of other amateur 52 00:02:17,580 --> 00:02:15,250 astronomers on September 18th sharing 53 00:02:19,470 --> 00:02:17,590 the moon views with your community to