For those researching similarly titled astronomical or artistic works:
The original file was in AVI (Audio Video Interleave) format and was later converted to MP4 (MPEG-4 Part 14) for better compatibility with modern devices.
The file name you provided—ending in —is a "double extension." This typically happens in two scenarios:
A satirical project titled Black Holes was awarded at Sundance in 2017. Black Drills & White Holes (Video 2000)
2000 (United States) United States. Language. Production company. All Worlds Video.
A manual rename or a batch processing error added the second extension. Related Media (For Context)