WEBVTT FILE

1
00:00:00.000 --> 00:00:06.791
ON-SCREEN: The red giant Iota Draconis grows brighter and dimmer over time. A light curve shows the star's brightness.

2
00:00:06.791 --> 00:00:14.583
ON-SCREEN: The light curve shows that the star pulsates roughly three times daily.