1 00:00:20,950 --> 00:00:18,790 gamma rays the highest energy form of 2 00:00:22,790 --> 00:00:20,960 light are produced by the hottest 3 00:00:26,630 --> 00:00:22,800 regions of the universe 4 00:00:29,189 --> 00:00:26,640 supernova explosions black holes neutron 5 00:00:32,150 --> 00:00:29,199 stars and pulsars 6 00:00:34,870 --> 00:00:32,160 liftoff of the delta rocket carrying 7 00:00:37,350 --> 00:00:34,880 glass a gamma-ray telescope searching 8 00:00:38,549 --> 00:00:37,360 for unseen physics in the stars of the 9 00:00:42,389 --> 00:00:38,559 galaxies 10 00:00:45,029 --> 00:00:42,399 on june 11 2008 the gamma-ray large area 11 00:00:46,150 --> 00:00:45,039 space telescope glast was sent into 12 00:00:48,709 --> 00:00:46,160 space 13 00:00:51,270 --> 00:00:48,719 since renamed fermi for high energy 14 00:00:53,910 --> 00:00:51,280 physics pioneer enrico fermi the 15 00:00:56,869 --> 00:00:53,920 spacecraft orbits about 300 miles above 16 00:00:59,670 --> 00:00:56,879 earth scanning and imaging the universe 17 00:01:02,150 --> 00:00:59,680 for gamma rays that unlike optical light 18 00:01:05,030 --> 00:01:02,160 and x-rays cannot be captured and 19 00:01:07,670 --> 00:01:05,040 reflected in mirrors light can be much 20 00:01:09,510 --> 00:01:07,680 more energetic than just visible 21 00:01:11,590 --> 00:01:09,520 and when it's a little bit more 22 00:01:12,469 --> 00:01:11,600 energetic we call this ultraviolet and 23 00:01:16,469 --> 00:01:12,479 you know 24 00:01:18,710 --> 00:01:16,479 bad for your skin 25 00:01:21,910 --> 00:01:18,720 and then you are more energetic you are 26 00:01:23,830 --> 00:01:21,920 in x-rays and now if you are even more 27 00:01:27,350 --> 00:01:23,840 energetic than x-rays you are in gamma 28 00:01:30,310 --> 00:01:27,360 rays and gamma rays is the domain that 29 00:01:32,950 --> 00:01:30,320 fermi is studying fermi carries two 30 00:01:37,350 --> 00:01:32,960 instruments the large area telescope or 31 00:01:39,830 --> 00:01:37,360 lats and the glass burst monitor or gbm 32 00:01:41,830 --> 00:01:39,840 lat has already unveiled an all-sky 33 00:01:45,190 --> 00:01:41,840 image of the glowing gas of the milky 34 00:01:48,230 --> 00:01:45,200 way blinking pulsars and a flaring 35 00:01:51,910 --> 00:01:48,240 galaxy billions of light years away 36 00:01:54,870 --> 00:01:51,920 fermi's gbm spotted 31 gamma-ray bursts 37 00:01:57,190 --> 00:01:54,880 in its first month of operation alone 38 00:01:59,270 --> 00:01:57,200 together the instruments will provide an 39 00:02:00,870 --> 00:01:59,280 unprecedented look across a broad 40 00:02:02,870 --> 00:02:00,880 gamma-ray spectrum 41 00:02:05,190 --> 00:02:02,880 enabling scientists to witness the 42 00:02:07,749 --> 00:02:05,200 processes powering these high-energy 43 00:02:11,110 --> 00:02:07,759 events they've already discovered a 44 00:02:13,110 --> 00:02:11,120 pulsar that is totally invisible for 45 00:02:16,949 --> 00:02:13,120 everybody except if you're looking in 46 00:02:20,869 --> 00:02:16,959 gamma rays that pulsar was is an is in 47 00:02:23,910 --> 00:02:20,879 the center of a of a supernova remnant 48 00:02:25,750 --> 00:02:23,920 so people thought oh there should be a 49 00:02:27,750 --> 00:02:25,760 pulse out there they looked they looked 50 00:02:29,670 --> 00:02:27,760 but they couldn't find anything because 51 00:02:31,750 --> 00:02:29,680 unless you look 52 00:02:33,990 --> 00:02:31,760 in gamma rays you're not going to find 53 00:02:37,350 --> 00:02:34,000 it it's a pulsar that pulses only in 54 00:02:39,750 --> 00:02:37,360 gamma rays so in a very short time 55 00:02:41,270 --> 00:02:39,760 they've already changed the way we look 56 00:02:43,990 --> 00:02:41,280 at pulsars 57 00:02:46,150 --> 00:02:44,000 and that's just a very small category of 58 00:02:48,550 --> 00:02:46,160 all the subjects that fermi can cover 59 00:02:50,309 --> 00:02:48,560 scientists predict fermi will also 60 00:02:52,949 --> 00:02:50,319 answer persistent questions about 61 00:02:56,309 --> 00:02:52,959 supermassive black holes the origin of 62 00:02:59,509 --> 00:02:56,319 cosmic rays and aid in searches for new 63 00:03:03,190 --> 00:02:59,519 physics all to better understand how our 64 00:03:04,869 --> 00:03:03,200 universe works it just started to give 65 00:03:06,869 --> 00:03:04,879 a fabulous 66 00:03:09,589 --> 00:03:06,879 discovery and provide scientists with 67 00:03:12,149 --> 00:03:09,599 fabulous data so if you hear the word 68 00:03:14,070 --> 00:03:12,159 fermi the mission for me you know this 69 00:03:15,270 --> 00:03:14,080 is the mission that study the sky in 70 00:03:19,110 --> 00:03:15,280 gamma rays 71 00:03:21,830 --> 00:03:19,120 and just stay tuned for a humongous 72 00:03:23,110 --> 00:03:21,840 large number of discovery that they will 73 00:03:24,869 --> 00:03:23,120 come 74 00:03:27,190 --> 00:03:24,879 and you will be surprised 75 00:03:31,430 --> 00:03:27,200 for more on fermi and other nasa