Astronomy Podcasts

Why do professional telescopes use mirrors rather than lenses? On The Supermassive Podcast, the answer comes after a listener asks whether dark matter could be space vampires, invisible because vampires have no reflection. Big glass lenses, one host explains, warp under their own weight, so the large instruments stick to mirrors. Then the vampire idea gets a straight-faced calculation anyway. That exchange shows most of what astronomy audio does well. It takes a question seriously, shows the working, and admits where the working stops.

StarTalk Radio pairs Neil deGrasse Tyson with comic co-hosts, and at its best the jokes keep a hard explanation moving. Cosmic Queries – Spontaneous Symmetry Breaking with Charles Liu is built from Patreon members' questions. Tyson cuts in to untangle a coin-flip counting problem, and the talk of entropy then lands on water boiling at 100 degrees Celsius, whose steam holds far more possible states than the liquid. The show roams, though. Busting Nutrition Myths with Jessica Knurick runs 56 minutes and discusses dietary guidelines, which suits a general science listener better than someone who came for galaxies.

StarTalk All-Stars, whose most recent listed episodes date from 2018, has astrophysicist Charles Liu fielding listener questions beside Chuck Nice. Walkabout the Galaxy is looser: a four-person panel argues about how to say "kilometer" on the way to the space news. The banter doesn't swallow this caveat. In A Whisper of a Hint of Primordial Black Holes plus Earth BLOBs, a possible small black hole detection is described as "on the hairy edge" between real signal and noise. The Cosmology & Astrophysics page and the Physics guide go further.

For keeping up, SpaceTime with Stuart Gary works like a bulletin with the numbers left in. Unveiling 11,000 New Asteroids and Earth's Local Origins places the Vera C. Rubin telescope on a 2,682-metre mountain in northern Chile and gives its 8.4-metre primary mirror. It also notes that the International Astronomical Union's Minor Planet Centre confirmed the discoveries. The same 24 minutes relay Virgin Galactic's planned three-day turnaround and a revenue sum built on 750 customers a year. Hear those as projections.

EVSN: Escape Velocity Space News, with Dr Pamela L. Gay and Erik Madaus, is better at the qualifier. In The Black Hole eating star with supernova sized regrets, it lays out a proposed merger between a black hole and a dying star, then asks, "Are researchers 100% sure this is what happened? No." The Space Show, which Andrew Rennie presents for 88.3 Southern FM and the Space Association of Australia, moves more slowly. In 2026.04.01 | Looking back at Earth from the cupola of the International Space Station, a lunar astronomy talk argues that rare sites such as Faustini crater may need protecting, based on what the speaker calls a first analysis. The Stargazing & Astronomy News and Space Exploration & Missions pages track this beat.

Long interviews are where the form is most generous. Starts With A Bang podcast gives Starts With A Bang #128 - Planet formation and proto-protoplanets 100 minutes. That leaves its guest, Charles, time to explain why planets must form quickly, since most disks around young stars are gone by about 10 million years. He also warns that the giant disks astronomers detect first are not necessarily typical. exocast is more personal. In Exocast-81b: A chat with Dr Matt Kenworthy about weird dips in light curves and the future of instrumentation, Kenworthy recalls a predicted transit that never came: "I would have bet my house on it." He also credits an amateur astronomer in Finland who spotted, in a different infrared catalogue, that a star had brightened years earlier.

Spacepod, hosted by asteroid scientist Dr Carrie Nugent, pairs wonder with scruple. In A newly discovered Martian volcano with Dr. Lee, the guest describes realising the team had been working inside a volcano 450 kilometres across. The same guest keeps the buried ice beneath it at "likely." In 226: The intersection of computer science and astronomy with Dr. Kubica, a hypothetical machine-learning result that is 80% accurate gets a blunt verdict: "That's one in every five things wrong. It's no good." The Planetary Science & Astrobiology page continues from here.

The Habitat, hosted by Lynn Levy, follows six volunteers through a year in an imitation Mars habitat on a mountain in Hawaii. Episode 6: I Feel Like A Million Dollars turns a rehearsal spacewalk into slapstick about radios people can't always hear. Episode 5: Tortilla! finds the crew split into camps inside a dome where, as one member puts it, "you don't just hear it, you feel it."

Observers often need hardware talk. Cosmos Safari, with David Farina and Rob Webb, gives The Ultimate Backyard Observatory: Stargazer Roll-Off Roof Sheds with Stoltzfus Structures to observatory sheds. It goes down to why the telescope pier gets its own deep footing, so frost can't shift it. Space Junk, with Tony Darnell and Dustin Gibson, takes listener questions. Complete Telescope Systems vs Assembling From Components - Which is Better? weighs a listener's long-held complaint that packaged mounts are under-engineered. SkyTour Radio with Marc D'Antonio is chatty and disarmingly frank. In Astro Potpourri, imaging the patch of sky where an interstellar object should be yields "a tiny dash of light," which the show calls "very anticlimactic."

Science & Futurism with Isaac Arthur trades in things that may not exist, and Cosmic Strings – Cracks in the Fabric of the Universe says so. It hangs its story on "if Cosmic Inflation Theory is right of course" and admits "Lots of uncertainty here." Enjoy the argument, and keep track of which parts have been measured.