WEBVTT FILE 1 00:00:00.200 --> 00:00:03.833 Hyperspectral. Hyperspectral measurements allow us to look beyond what human eyes 2 00:00:03.833 --> 00:00:07.300 can see to peer through cosmic dust clouds or monitor the health of our ocean. 3 00:00:07.766 --> 00:00:11.100 Electromagnetic energy travels in waves that we perceive in different ways 4 00:00:11.100 --> 00:00:13.600 -- from very long radio waves to very short 5 00:00:13.600 --> 00:00:16.500 X- and gamma ray waves with visible light somewhere in the middle. 6 00:00:16.800 --> 00:00:18.500 Hyperspectral analysis combines 7 00:00:18.500 --> 00:00:21.433 measurements taken over a wide range of that electromagnetic spectrum. 8 00:00:21.833 --> 00:00:24.500 The upcoming Plankton Aerosol Cloud ocean Ecosystem 9 00:00:24.500 --> 00:00:27.766 satellite -- PACE -- will help us study Earth's ocean in new ways, 10 00:00:27.900 --> 00:00:30.800 using hyperspectral measurements of light emitted from Earth's surface. 11 00:00:30.800 --> 00:00:31.866 Using ultraviolet 12 00:00:31.866 --> 00:00:34.900 light, we'll see tiny particles suspended in our ocean and atmosphere, 13 00:00:35.066 --> 00:00:37.733 which helps us understand the impact of human activities on our planet. 14 00:00:38.300 --> 00:00:41.800 Meanwhile, measurements in visible light -- what our eyes see -- help us monitor 15 00:00:41.800 --> 00:00:43.500 the concentration of phytoplankton, 16 00:00:43.500 --> 00:00:46.266 tiny organisms that make up the base of the ocean food web. 17 00:00:46.500 --> 00:00:49.100 Using even longer infrared measurements will allow space 18 00:00:49.100 --> 00:00:52.000 to monitor atmospheric conditions above and near the ocean. 19 00:00:52.200 --> 00:00:55.533 Bring all these data together and we'll have a very full picture of Earth's ocean. 20 00:00:55.800 --> 00:00:57.633 Courtesy of hyperspectral measurements.