WEBVTT FILE 1 00:00:00.010 --> 00:00:04.020 [Music] Announcer: Ten, Nine, 2 00:00:04.040 --> 00:00:08.070 Eight, seven, six 3 00:00:08.090 --> 00:00:12.090 five, four, three, engines start 4 00:00:12.110 --> 00:00:16.120 one, zero, and liftoff of the... Narrator 1: NASA's Swift 5 00:00:16.140 --> 00:00:20.190 satellite rode to orbit on aboard a Delta rocket on November 20th, 2004, 6 00:00:20.210 --> 00:00:24.220 and is still going strong. Swift's unique instrumentation 7 00:00:24.240 --> 00:00:28.260 allows it to quickly locate an interesting high-energy outburst, 8 00:00:28.280 --> 00:00:32.300 automatically determine its position, and rapidly investigate it with 9 00:00:32.320 --> 00:00:36.340 ultraviolet, optical, and X-ray telescopes. Swift's 10 00:00:36.360 --> 00:00:40.410 versatility has led to amazing observations across a wide swath of astronomy. 11 00:00:40.430 --> 00:00:44.420 Narrator 2: A seven-year campaign to monitor the center of our galaxy with 12 00:00:44.440 --> 00:00:48.500 Swift, has given astronomers a unique bounty. It has more than 13 00:00:48.520 --> 00:00:52.520 doubled the number of bright X-ray flares observed from our galaxy's central black hole 14 00:00:52.540 --> 00:00:56.570 and led to the discovery of a rare, highly magnetized, neutron 15 00:00:56.590 --> 00:01:00.620 star. Narrator 3: Swift's primary target is gamma-ray bursts, 16 00:01:00.640 --> 00:01:04.640 or GRBS, the biggest and most mysterious explosions 17 00:01:04.660 --> 00:01:08.670 in the cosmos. On April 13, 2010, the spacecraft 18 00:01:08.690 --> 00:01:12.710 Burst Alert Telescope cataloged its 500th GRB. 19 00:01:12.730 --> 00:01:16.720 Narrator 4: On September 16, 2012, NASA's Swift noticed 20 00:01:16.740 --> 00:01:20.760 a new, and rapidly brightening X-ray source. Additional X-ray 21 00:01:20.780 --> 00:01:24.810 behavior told astronomers that the object at the center of this activity was previously 22 00:01:24.830 --> 00:01:28.830 unknown black hole. 23 00:01:28.850 --> 00:01:32.870 Narrator 2: Swift and other satellites used X-ray telescopes to monitor interactions between 24 00:01:32.890 --> 00:01:36.920 a pair of gigantic stars. As the stars approach each other, 25 00:01:36.940 --> 00:01:40.940 their fierce outflows, called stellar winds, crash together at several 26 00:01:40.960 --> 00:01:44.970 million miles an hour. Reaching temperatures of millions of degrees, and creating 27 00:01:44.990 --> 00:01:49.010 X-rays. Narrator 5: The Swift 28 00:01:49.030 --> 00:01:53.060 UV mosaics allow us to study the evolution of young stars in the LMC and 29 00:01:53.080 --> 00:01:57.150 SMC, all in one view. These 30 00:01:57.170 --> 00:02:01.180 images are the highest-resolution wide-field surveys of the galaxies 31 00:02:01.200 --> 00:02:05.240 at ultraviolet wavelengths. 32 00:02:05.260 --> 00:02:09.300 Narrator 1: On January 21, 2014, astronomers 33 00:02:09.320 --> 00:02:13.320 discovered an exceptionally close stellar explosion in M82, 34 00:02:13.340 --> 00:02:17.350 a galaxy located about 12 million light-years away. 35 00:02:17.370 --> 00:02:21.410 Swift's ultraviolet/optical telescope imaged the brightening supernova the 36 00:02:21.430 --> 00:02:25.440 very next day. Narrator 3: When a neighboring red 37 00:02:25.460 --> 00:02:29.480 dwarf star, called DG CVn, erupted in an enormous X-ray 38 00:02:29.500 --> 00:02:33.540 flare on April 23, 2014, Swift caught it and 39 00:02:33.560 --> 00:02:37.580 monitored the eruption. The blast was some 10,000 times more 40 00:02:37.600 --> 00:02:41.630 powerful than the biggest flare we've ever seen from our sun. 41 00:02:41.650 --> 00:02:45.680 Narrator 4: Three unusually long-lasting stellar explosions discovered by 42 00:02:45.700 --> 00:02:49.700 Swift established a previously unrecognized class of GRBs called 43 00:02:49.720 --> 00:02:53.730 ultra-long gamma-ray bursts. Astronomers think they arise from 44 00:02:53.750 --> 00:02:57.780 the catastrophic death of supergiant stars hundreds of times larger than the sun. 45 00:02:57.800 --> 00:03:01.820 Narrator 2: On March 28, 2011, 46 00:03:01.840 --> 00:03:05.920 Swift detected intense X-ray emission from a galaxy's supermassive black hole. 47 00:03:05.940 --> 00:03:10.080 Astronomers realized they were seeing the signature of a sun-like star 48 00:03:10.100 --> 00:03:14.150 being shredded by the black hole. Infalling gas was captured in 49 00:03:14.170 --> 00:03:18.250 an accretion disk, and powered an X-ray jet. Narrator 1: A 50 00:03:18.270 --> 00:03:22.260 record-setting blast of gamma rays from a dying star in a distant galaxy 51 00:03:22.280 --> 00:03:26.290 wowed astronomers around the world in April 2013. The 52 00:03:26.310 --> 00:03:30.350 blast produced the highest-energy light ever detected from a GRB. 53 00:03:30.370 --> 00:03:34.370 UV, optical, X-ray and gamma ray observation 54 00:03:34.390 --> 00:03:38.410 from Swift provided valuable data. Narrator 4: Asteroids 55 00:03:38.430 --> 00:03:42.480 crash all the time, but the effects dissipate quickly, so catching the aftermath 56 00:03:42.500 --> 00:03:46.500 of a recent collision in 2010 was something special. 57 00:03:46.520 --> 00:03:50.530 Swift's ultraviolet vision helped astronomers rule out the possibility they were seeing a comet. 58 00:03:50.550 --> 00:03:54.570 Narrator 3: A GRB so bright it could have been 59 00:03:54.590 --> 00:03:58.580 seen by the naked eye? That's what Swift and ground-based telescopes 60 00:03:58.600 --> 00:04:02.610 detected on March 19, 2008, thanks to a GRB jet 61 00:04:02.630 --> 00:04:06.660 aimed almost directly at Earth. Incredibly, the light from this dying star 62 00:04:06.680 --> 00:04:10.670 began its travels 7.5 billion years ago. 63 00:04:10.690 --> 00:04:14.690 Narrator 2: On April 29, 2009, a five-second-long burst of 64 00:04:14.710 --> 00:04:18.710 gamma rays became the farthest explosion yet identified by Swift. 65 00:04:18.730 --> 00:04:22.720 Its light had been traveling for 13.14 billion years, placing it 66 00:04:22.740 --> 00:04:26.750 among the most distant objects known. Narrator 4: Using Swift 67 00:04:26.770 --> 00:04:30.770 observations, astronomers identified an abrupt slowdown in the rotation of a 68 00:04:30.790 --> 00:04:34.820 neutron star. An event dubbed an "anti-glitch." 69 00:04:34.840 --> 00:04:38.880 The discovery holds important clues for understanding neutron star interiors, 70 00:04:38.900 --> 00:04:42.910 which contain some of the densest matter in the universe. Narrator 3: Swift 71 00:04:42.930 --> 00:04:46.920 observations, combined with theoretical research, have shown that 72 00:04:46.940 --> 00:04:50.930 colliding neutron stars are a likely explanation for gamma-ray bursts 73 00:04:50.950 --> 00:04:54.970 lasting less than two seconds. 74 00:04:54.990 --> 00:04:59.020 Narrator 1: NASA's Swift mission ushered in a new era of research into gamma-ray bursts. 75 00:04:59.040 --> 00:05:03.070 As Swift begins its second decade of operation, its 76 00:05:03.090 --> 00:05:07.110 speed, flexibility and versatility, make it an important 77 00:05:07.130 --> 00:05:11.140 platform for studying the most energetic and rapidly-changing phenomena 78 00:05:11.160 --> 00:05:15.170 in the cosmos. [Beeping] 79 00:05:15.190 --> 00:05:26.406 [Beeping]