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)