Hi all to the forum, I have just recently read a blog post from the Omni reboot site. Listed are some great podcast on science and science fiction. There some podcast that I have subscribed to and some I just started listing too. Among those that are listed are Geeks Guide to the Galaxy, Big Picture Science and Reclic Radio. Treks in sci-fi is on listed there but Mission Log: the Gene Roddenberry podcast is. While Relic Radio has some old sci-fi radio shows form the 50 to the 70s, included is The CBS Radio Mystery Theater which did have some sci-fi episodes in it is run back in the 70's.
https://omni.media/guide-to-the-best-sci-fi-podcasts