https://www.youtube.com/@pbsspacetime | PBS Space Time
and
https://www.youtube.com/@HistoryoftheEarth | History of the Earth, which is think is a sister channel to History of the Universe.
Few more which I had forgotten, ParallaxNick is a hidden gem:
https://www.youtube.com/@parallaxnick637 | Science, history, astronomy, gorgeous poetic narration, love how he puts science in historical context
https://www.youtube.com/@WardCarroll | Veteran F-14 Tomcat radar intercept officer covers air power, episodes with Justin Bronk are the best open intel on Russia and Ukraine available
https://www.youtube.com/@MakingShorts | Joel Haver's quirky comedy shorts, sometimes sublime melancholic pieces
https://www.youtube.com/@pbsspacetime | PBS Space Time
and
https://www.youtube.com/@HistoryoftheEarth | History of the Earth, which is think is a sister channel to History of the Universe.