WEBVTT FILE 1 00:00:00.041 --> 00:00:08.340 HUBBLE OBSERVES FLAPPING SHADOW IN SPACE 2 00:00:08.340 --> 00:00:22.469 The Hubble Space Telescope has recently observed something fascinating happening in space. 3 00:00:22.469 --> 00:00:36.557 A planet-forming disk around a young star named HBC 672 is casting a huge shadow resembling a pair of flapping wings. 4 00:00:36.557 --> 00:00:43.063 Hubble captured one image of this giant shadow in 2017... 5 00:00:43.063 --> 00:00:55.105 ...but when Hubble looked at it again later, scientists realized that the shadow had moved. 6 00:00:55.105 --> 00:01:08.692 When you compare the images back to back, the giant “wings” appear to flap. 7 00:01:08.692 --> 00:01:20.694 A planet’s gravity could be warping the disk into the shape of a saddle, causing the shadow to change as the disk rotates. 8 00:01:20.694 --> 00:01:36.572 With 30 years of observations, Hubble can watch celestial objects change over time to better understand how the universe works. 9 00:01:36.572 --> 00:01:45.409 [ INTENSE MUSIC ]