Watch the Delta Aquarids, and Meet NASA's 'Aquanauts'

The video discusses the Delta Aquarids meteor shower, highlighting its unique persistent trains and its connection to the unusual comet 96P Macholtz, which has significantly less carbon than other known comets. The best viewing times and locations for the meteor shower are provided, emphasizing the Southern Hemisphere and Northern tropics during the New Moon. Additionally, the video covers NASA's NEMO mission, where astronauts train in an undersea research station to simulate space conditions, testing technology and studying behavioral health in confined environments.

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