1
00:00:03,380 --> 00:00:05,330
3 Wavelengths

2
00:00:05,330 --> 00:00:07,800
True color images are made by combining

3
00:00:07,800 --> 00:00:09,980
red, blue and green light.

4
00:00:09,980 --> 00:00:15,260
Combined together, these visible bands of light make up all the colors in the rainbow

5
00:00:15,260 --> 00:00:18,730
and all of Landsat’s true color images.

6
00:00:18,730 --> 00:00:21,960
Landsat also captures light that we can’t see.

7
00:00:21,960 --> 00:00:24,950
That type of light can reveal some incredible things

8
00:00:24,950 --> 00:00:26,770
when you look at a false color image.

9
00:00:26,770 --> 00:00:28,960
Like the difference between types of plants, 

10
00:00:28,960 --> 00:00:30,510
how healthy those planets are,

11
00:00:30,510 --> 00:00:33,170
healthy coral reefs and even dead coral reefs,

12
00:00:33,170 --> 00:00:35,500
fire-tracking, ocean pollution...

13
00:00:35,500 --> 00:00:38,450
The possibilities are nearly endless!

14
00:00:38,450 --> 00:00:41,088