Neutron Stars
Concept
Dense stellar remnants that can be sources of gravitational waves.
Mentioned in 2 videos
Videos Mentioning Neutron Stars

Martin Rees: Black Holes, Alien Life, Dark Matter, and the Big Bang | Lex Fridman Podcast #305
Lex Fridman
Extremely dense, collapsed cores of massive stars, described as providing extreme conditions for studying basic physics.

Blackfoot poetry: from Einstein to spacetime – Public lecture by Dr. Corey Gray
Fermilab
Dense stellar remnants that can be sources of gravitational waves.