WEBVTT FILE 1 00:00:00.100 --> 00:00:04.150 Another one of the big goals of the James Webb Space Telescope is to see how 2 00:00:04.170 --> 00:00:08.230 planetary systems got their start. So that would be akin to thinking about 3 00:00:08.250 --> 00:00:12.330 how our solar system was several billion years ago. So looking 4 00:00:12.350 --> 00:00:16.460 at the big disks of gas and dust that eventually 5 00:00:16.480 --> 00:00:20.560 form stars and planets. Another really great thing about 6 00:00:20.580 --> 00:00:24.700 Webb being an infrared telescope is the fact that a lot of the really interesting 7 00:00:24.720 --> 00:00:28.770 components in a planet's atmosphere happen to fall in the infrared part 8 00:00:28.790 --> 00:00:32.850 of the spectrum. When a star has a planet that goes in front of the star 9 00:00:32.870 --> 00:00:36.960 and blocks some of the starlight we can say ah, now we know how big that planet was 10 00:00:36.980 --> 00:00:41.050 and also we can begin to explore the light that goes through the planet's atmosphere on its 11 00:00:41.070 --> 00:00:45.150 to our telescope. We spread that out into a spectrum as well and we can see can now 12 00:00:45.170 --> 00:00:49.330 now what chemical in the atmosphere of another planet. So for 13 00:00:49.350 --> 00:00:53.360 example we can look for things like water vapor or carbon dioxide 14 00:00:53.380 --> 00:00:57.440 those types of things. So the Webb telescope is definitely our next 15 00:00:57.460 --> 00:01:00.007 step in our search for life in the universe.