Hi,
I have been listening to Astronomy Cast. This has been broadcasting for over 10 years and there are hundreds of 'casts in the backlog. It's a weekly 30 minute talk.
http://www.astronomycast.com/
Here are the last 10 episode titles
Ep. 610: What is Required to Confirm Alien Life: Non-sentient Edition
Ep. 609: The Benefits of Volcanoes
Ep. 608: NASA Perseverance – The First 100 Days
Ep. 607: InSight and Marsquakes
Ep. 606: Time Dilation – Skipping Through Time
Ep. 605: Sounding Rockets
Ep. 604: Balloon Astronomy
Ep. 603: The New Colors of Radio – Getting Longer
Ep. 602: The New Colors of Gamma Rays – Getting Shorter
Ep. 601: Unexpected Light Pollution
The funny thing is I always have to listen twice. I listen to each episode when it first comes out, in bed just after I turn off the lights and within 10 minutes I am asleep...