WEBVTT FILE 1 00:00:00.190 --> 00:00:02.280 [Music] 2 00:00:02.280 --> 00:00:04.460 Since 1958, 3 00:00:04.460 --> 00:00:06.520 NASA has relied on radio wave 4 00:00:06.520 --> 00:00:09.580 technology to “talk” with missions in space. 5 00:00:09.580 --> 00:00:11.620 Today, we’re developing a 6 00:00:11.620 --> 00:00:13.650 better way to get spacecraft data 7 00:00:13.650 --> 00:00:15.750 back to Earth. 8 00:00:15.750 --> 00:00:17.790 That’s where the Laser Communications Relay 9 00:00:17.790 --> 00:00:20.940 Demonstration, or LCRD, comes in. 10 00:00:20.940 --> 00:00:23.110 Built and managed by NASA’s 11 00:00:23.110 --> 00:00:25.140 Goddard Space Flight Center, 12 00:00:25.140 --> 00:00:27.320 LCRD will send and receive 13 00:00:27.320 --> 00:00:29.500 near-infrared laser beams to and 14 00:00:29.500 --> 00:00:30.540 from Earth. 15 00:00:30.540 --> 00:00:32.720 As NASA’s first long-duration 16 00:00:32.720 --> 00:00:35.790 test of optical communications technology, 17 00:00:35.790 --> 00:00:39.810 the mission aims to perfect space and ground-based technologies. 18 00:00:39.810 --> 00:00:42.860 So, why lasers? 19 00:00:42.860 --> 00:00:45.030 Laser communications can 20 00:00:45.030 --> 00:00:47.200 transmit up to 100 times more data 21 00:00:47.200 --> 00:00:49.370 per second than previous systems 22 00:00:49.370 --> 00:00:51.410 by using a shorter wavelength of energy. 23 00:00:51.410 --> 00:00:53.450 With this increased bandwidth, 24 00:00:53.450 --> 00:00:55.490 missions can send larger files 25 00:00:55.490 --> 00:00:57.550 and even live high-definition 26 00:00:57.550 --> 00:00:59.650 video from space. 27 00:00:59.650 --> 00:01:01.690 Laser communications systems are 28 00:01:01.690 --> 00:01:04.830 smaller and more efficient than radio wave technology. 29 00:01:04.830 --> 00:01:07.940 They leave more room for science instruments, 30 00:01:07.940 --> 00:01:10.070 are cheaper to launch and require less 31 00:01:10.070 --> 00:01:12.120 energy onboard the spacecraft. 32 00:01:12.120 --> 00:01:14.210 These benefits extend to 33 00:01:14.210 --> 00:01:16.350 to receivers on the ground. 34 00:01:16.350 --> 00:01:18.510 Earth-based laser communications receivers 35 00:01:18.510 --> 00:01:20.670 can be up to 44 times smaller 36 00:01:20.670 --> 00:01:22.860 than current radio antennas. 37 00:01:22.860 --> 00:01:25.030 LCRD is the next step 38 00:01:25.030 --> 00:01:27.210 in making these technologies a reality, 39 00:01:27.210 --> 00:01:29.250 helping NASA to push the boundaries 40 00:01:29.250 --> 00:01:32.440 of scientific discovery and exploration. 41 00:01:32.440 --> 00:01:35.500 Eventually, NASA will integrate this technology 42 00:01:35.500 --> 00:01:37.570 into future missions, 43 00:01:37.570 --> 00:01:39.660 as well as share it with commercial companies. 44 00:01:39.660 --> 00:01:41.780 45 00:01:41.780 --> 00:01:43.840 46 00:01:43.840 --> 00:01:45.880 47 00:01:45.880 --> 00:01:47.910 48 00:01:47.910 --> 00:01:49.950 49 00:01:49.950 --> 00:01:52.000 50 00:01:52.000 --> 00:01:52.095