1 00:00:00,000 --> 00:00:11,594 ♪ ON-SCREEN: Two stars orbit each other inside the U Monocerotis system, a binary system with a large disk of dust and debris. 2 00:00:11,594 --> 00:00:19,144 When one of the stars passes behind the disk from the Earth's perspective, it dims noticeably. 3 00:00:19,144 --> 00:00:27,652 ON-SCREEN: Close-up of the primary star. 4 00:00:27,652 --> 00:00:37,037 ON-SCREEN: Close-up of the secondary star. This star has a faint accretion disk and outflows at the top and bottom of the star. 5 00:00:37,037 --> 00:00:45,962 ON-SCREEN: NASA logo