The 365 Days of Astronomy
The 365 Days of Astronomy podcast, launched in 2009 for the International Year of Astronomy, offers daily episodes featuring a new voice each day to explore the universe. Managed by Avivah Yamani and edited by Richard Drumm, the show is funded through Patreon and produced by the Planetary Science Institute. It provides accessible astronomy content for a broad audience.
Episodes
Cheap Astronomy - Dear CA Ep. 135: Going Nuts
Are we really ready? Hosted by Steve Nerlich. From Dec 1, 2025. Cheap Astronomy tries to stay sane on a trip to Mars? Dear Cheap Astronomy – Will we just go nuts on a two-year mission to Mars Well, we might if the space radiation doesn't kill us first. As we may have noted in previous episodes, current timelines for when we'll land on Mars seem to take little account of the fact that there are man
Ask A Spaceman Ep. 274: Is Dust the Best Thing in the Universe?
All Hail Dust! Hosted by Dr. Paul M. Sutter. Why is dust so annoying? But where does it come from, and what can it do? And is dust responsible for the creation of life? I discuss these questions and more in today's Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Watch on YouTube: http://www.youtube.com/PaulMSutter Read a book: https://w
Astronomy Cast Ep. 797: Summer in Space
https://www.youtube.com/watch?v=tSIp-RwWegA Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest) Streamed live June 10, 2026. We're about to take a much needed 2 month hiatus. But just because we're not here doesn't mean space stops existing and doing things. Today, let's give a preview of the big events due to happen in space this summer so you can prepare yourself and make su
Travelers in the Night Eps. 889 & 890: Lick Observatory & Comet 467P (Linear-Grauer)
Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org From March 2026. Today's 2 topics: - In 1892 the world's largest telescope, the Lick Observatory's 36 inch refracting telescope made the news when E.E. Barnard discovered, Amalthea, the 5th moon
NOIRLab - Strong Hints of Magnetic Fields On Exoplanets
Using the Gemini North telescope in Hawai'i and the European Southern Observatory's Very Large Telescope, a team of astronomers measured wind speeds on seven very hot, Jupiter-like exoplanets. The observations revealed that the winds on these planets are most likely governed by magnetic fields, providing the first robust measurement of magnetic activity on planets outside the Solar System. In this
EVSN - Chasing Chemistry: Missions Measure Comet & Planet Atmospheres
From June 3, 2026. In this episode, we're going to look at Psyche's success at Mars, the cool 3I-ATLAS science coming from Europa Clipper and JUICE en route to the Jupiter system, and we also look at JWST's efforts to study exoplanetary atmospheres and the weird weather of other worlds. We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. J
Actual Astronomy - Observer's Calendar for June
Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan who enjoy teaching astronomy classes and showing the public views through their telescopes. actualastronomy@gmail.com This month we talk about the Moon meeting up with the planets and some interesting Lunar Features. We also talk about some of the best deep sky objects to observe at this time of year. I was away then s
Awesome Astronomy - Psyche, Poet and Astronomy Exams
Paul Hill and Dr. Jenifer "Dr. Dust" Millard host. Damien Phillips, John Wildridge and Dustin Ruoff produce. It's the chatty astrowaffle episode! Psyche rushing past Mars, Power instrument at VLT, GCSE Astronomy exams and listener emails. We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. Just visit: https://www.patreon.com/365DaysOfAstr
Deep Astronomy - Vega: The Second Most Important Star in Our Sky
https://www.youtube.com/watch?v=0NEnjp1I6GQ Hosted by Tony Darnell. From Sep 7, 2017. Vega, or alpha lyrae, is the brightest star in the constellation Lyra the Harp and it is the fifth brightest star overall in our night sky. It is also the second brightest star in the northern celestial hemisphere. Vega has also been called by astronomers the second most important star in our sky next to the S
Astronomy Cast Ep. 796: Oceans & Organics on Mars
https://www.youtube.com/watch?v=HwCk5uldz4g Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest) Streamed live on Jun 1, 2026. Mars is cold & dry today, but the evidence is growing that it used to be warmer & wetter. with seas & oceans that covered large parts of its surface. With the additional findings of the chemicals for life, the search for life on Mars is getting pretty i
Travelers in the Night Eps. 887 & 888: Apophis Bound & Investigating the Mystery of How Life Formed
Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org From February 2026. Today's 2 topics: - In April 2029 on one of the luckiest Friday the 13th in human history the 1,500 ft by 500 ft asteroid Apophis will pass within 23,600 miles of the Earth's
Equatorial Sky Guide - June Episode
Hosted by our Director, Avivah Yamani. Mercury reaches its best evening appearance of the year, Venus and Jupiter meet in twilight, the Moon visits the planets, and the Milky Way shines brightly over equatorial skies. Join us for a tour of the June 2026 night sky. Clear skies! We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. Just visit:
EVSN - After Hours: Crowdsourcing Innovation with Trisha Epp
From May 27, 2026. Trisha Epp joins us to talking about NASA's collaboration with Freelancer, and how Innovation is now getting crowdsourced. Join in to learn how to launch your own Moonshot! Guest Trisha Epp is a Physicist, Philosopher, and Futurist with a Masters in Geophysics from CalTech and a duel bachelors in physics and philosphy from the University of British Columbia. Since 2023, she's be
Guide To Space - Lunar Rovers, From Apollo to Artemis
https://www.youtube.com/watch?v=larzCw9Vn-w From Jul 21, 2020. When the Apollo astronauts first landed on the Moon, they couldn't go far on foot. That's why the three final missions were equipped with Lunar Roving Vehicles, or Moon buggies, which allowed the astronauts to cover much more ground and do more science. Now that NASA is returning to the Moon by 2024 as part of its Artemis Program, it
Awesome Astronomy - June Part 1: Objects In the Golden Mirror May Be Closer
Paul Hill and Dr. Jenifer "Dr. Dust" Millard host. Damien Phillips, John Wildridge and Dustin Ruoff produce. This month a bit of a JWST fest with news about the cosmic Web (Webb?! ) and those little red dots that seem to be breaking cosmology. There is also our normal skyguide and moon guide. We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production co
Ask A Spaceman Ep. 273: What if the Universe Had No Beginning?
Hosted by Dr. Paul M. Sutter. What does is mean for the Universe to have a wave function? How does Hawking's "no boundary" proposal mean that the Universe comes from itself? And is it really the final answer? I discuss these questions and more in today's Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Watch on YouTube: http://www.youtub
Astronomy Cast Ep. 795: Expanse Science
https://www.youtube.com/watch?v=n14RYk2qFtc Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest) Streamed live on May 10, 2026. This is the final episode of our series on sci-fi universes. And this week we will tackle "The Expanse". Now we've got fusion drives, Proto-matter, g-forces! Listen up, belta lawda! Let's look at the science of our own possible (with a side of aliens)
Travelers in the Night Eps. 885 & 886: Dark Sky Network & Aviation and Space Weather
Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org From February 2026. Today's 2 topics: - Around the world those who value the natural night sky are evaluating the effects of light pollution. In addition to impairing astronomy and star gazing th
UNAWE Space Scoop - Story Of the Sun's 'Road Trip' Through the Milky Way With Friends
https://spacescoop.org/en/scoops/2605/story-of-suns-road-trip-through-the-milky-way-with-friends/ Did you know that our Sun and its many, uh, childhood friends were all born at a place much closer to the center of our Galaxy? Over the years, our Sun and its friends have been on sort of a speedy galactic tour traveling a distance of almost 10,000 light-years from the center of the Milky Way. But t
EVSN - Astronomers: Improbability Finders
From May 20, 2026. Pamela is on the road in this episode as we look at how (and why) astronomers keep finding the improbable, follow the evidence to possible sources of little red dots, study the power of big star clusters to move gas, and examine the merger history of little black holes into bigger ones. We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and p
H'ad astra historia - Ep. 303: A Review of This Month in Astronomical History
Today's 'guest' is HAD's This Month in Astronomical History. I'll be reading two essays from the archives: Dr. Rebecca Charbonneau's Aug 2018 essay titled, "The Mysterious Wow! Signal" and Dr. Richard Fienberg's May 2022 essay titled, "The First Telescope on the Moon." This Month in Astronomical History is a lead-in to next month's interview with the new Editor, Dr. Mugdha Polimera. H'ad astra h
Space Stories - Exoplanets
Hosted by our Director, Avivah Yamani! Today we are traveling beyond our solar system to talk about one of the most exciting discoveries in modern astronomy. Exoplanets! We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can! Share the podcast with your frien
Exoplanet Radio - The First Exoplanet Of JWST
Hosted by Tony Darnell. From July 17, 2023. The James Webb Space Telescope Has confirmed its first exoplanet, LHS 475 b, in the southern constellation Octans, using the transit technique. The TESS satellite detected the possible presence of it and JWST's NIRSpec instrument has confirmed the observation. The planet is 99% the diameter of Earth & 91.4% of Earth's mass. So your first hope is that it'
Astronomy Cast Ep.139: Energy Levels & Spectra
http://www.astronomycast.com/archive/ From May 25, 2009. Last week (May 18, 2009) we took a peek into the tiny world of quantum mechanics, and its unintuitive, but very accurate mathematical predictions. And although we all appreciate the physics lesson, you're probably wondering what this all has to do with astronomy. Well, today we bring it all home and explain how quantum mechanics has given as
Travelers in the Night Eps. 883 & 884: Theia & Turkeys and Asteroids
Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org From January 2026. Today's 2 topics: - In the distant past things in our solar system were very much more wild and violent than they are today. 4.5 billion years ago a Mars sized object called Th
The Cosmic Savannah - When Telescopes Think - AI and The Future of Astronomy
Hosted by Dr. Jacinta Delhaize, Dr. Tshiamiso Makwela, Dr. Daniel Cunnama & François Campher. In this episode of The Cosmic Savannah, Dan and Francois sit down with Dr. Nick Erasmus to explore the ATLAS Digital Assistant and the growing role of Artificial Intelligence and Machine Learning in astronomy. They discuss how these technologies are reshaping the modern astronomical landscape and what t
EVSN - Uncommon Stars
From May 13, 2026. In today's episode where we look at the Voyager mission's exploration beyond our solar system, the organics Mars Curiosity Rover has discovered, the distribution of planets uncovered by the TESS mission, and how JWST measured the surface of a rocky world 50 light years away! We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production co
Actual Astronomy - Observing While the Moon is Up
Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan who enjoy teaching astronomy classes and showing the public views through their telescopes. actualastronomy@gmail.com In this episode we read some listener emails and discuss our recent observing sessions, sketching and Shane talks about his first experience with the PiFinder. Observing Last night. It was a nearly f
Guide To Space - Many New Fast Radio Bursts Found, Including Another Repeater
https://www.youtube.com/watch?v=voRC5ImEMH4 From Jan 18, 2019. Hosted by Fraser Cain. One of the big mysteries in astronomy is unfolding right before our eyes: fast radio bursts. And now a new Canadian radio telescope has come online, detecting many new bursts, including the second ever seen repeating. Finally, with the right tools at their disposal, astronomers are going to be able to get to b
Ask A Spaceman Ep. 272: Are Neutrinos Their Own Evil Twins?
Majorana particles! Hosted by Dr. Paul M. Sutter. What does "antimatter" actually mean? Can a particle be its own opposite? What would happen to it, and what does this have to do with a missing scientist? I discuss these questions and more in today's Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Watch on YouTube: http://www.youtube.co
Astronomy Cast Ep. 794: Stargate Science
https://www.youtube.com/watch?v=ZJ9GIAGMk2Q Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest) Streamed live on May 10, 2026. We continue our ad-hoc miniseries through sci-fi franchises. This week we'll talk about Stargate, worm holes, mind parasites and self-replicating bots. There's a lot to talk about! This show is supported through people like you on Patreon.com/Astrono
Travelers in the Night Eps. 881 & 882: Dangerous Comets & David's Goliath PHA
Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org From December 2025 & January 2026. Today's 2 topics: - It is possible the object creating the Tunguska event in Russia 1908 which knocked down 80 million trees over an area about twice the size o
ASTROMAN - B for Big Dipper
Learn how the Big Dipper can guide you to the North Star and why this famous star pattern has helped travelers navigate for centuries. "ASTROMAN: the Dark Sky Guardian" is a podcast channel that aims to explore popular science in multiple disciplines and research on interdisciplinary approaches, such as sustainability, dark-sky protection, astrophotography, space exploration, astronomy innovatio
EVSN - Uranus' Odd Tilt Possibly Explained By New Model
From April 6, 2020. Tokyo Institute of Technology researchers have published a model that seems to explain Uranus' bizarre tilt - a collision between a young Uranus and a massive ice world that could have both tipped Uranus over, and also formed its rings and its 27 moons in the process. We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs.
Space Stories - Shooting Stars
Hosted by our Director, Avivah Yamani! Discover the science behind shooting stars, from meteors and meteor showers to the cosmic debris constantly entering Earth's atmosphere. We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can! Share the podcast with your
Guide To Space - Finally! An Explanation for One of the Most Powerful Supernovae Ever Seen
https://www.youtube.com/watch?v=OEZu3pXAFWY Hosted by Fraser Cain. From Jan 31, 2020. In 2006, astronomers spotted the telltale sign of a supernova detonating in the galaxy NGC 1260, located about 240 million light-years away in the constellation of Perseus. As telescopes around the world turned their collective light-gathering power on the expanding explosion designated as SN 2006gy, they realize
Deep Astronomy - Discoveries of JWST Ep. 6: Revealing the Universe's First Stars
https://www.youtube.com/watch?v=ZEsLOAJWEo8 Hosted by Tony Darnell. From May 30, 2025. Join this channel to get access to special content including livestreams! The James Webb Space Telescope has unveiled candidates for the very first stars to shine in the universe. Here is what it found. We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs.
Astronomy Cast Ep. 793: Star Trek Science
https://www.youtube.com/watch?v=5MqoQOXdQis Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest) Streamed live May 4, 2026. Today we continue our mini-series; evaluating the science of various sci-fi franchises. We did Star Wars last week, this week tackle Star Trek. From transporters to warp drives, from phasers to photon torpedos. Let's tackle what Star Trek gets right and wr
Travelers in the Night Eps. 879 & 880: Lurking Asteroid & Carrington Anticipated
Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org From December 2025. Today's 2 topics: - The Dark Energy Camera on the National Science Foundation's Blanco 4-meter telescope on Cerro Tololo in Chile is taking near Sun twilight images to search
NoirLab - NSF-DOE Vera C. Rubin Observatory Discovers Thousands of Asteroids
Scientists at NSF–DOE Vera C. Rubin Observatory, jointly funded by the U.S. National Science Foundation and the U.S. Department of Energy's Office of Science, have submitted an unprecedented set of asteroid detections to the IAU Minor Planet Center, including hundreds of distant worlds beyond Neptune and 33 previously unknown near-Earth asteroids. In this podcast, Dr. Mario Juric discusses how the
EVSN - The One With the Dark Matter
From May 6, 2026. In this episode, we're going to be looking back in time at how Dark Matter may have influenced the formation of Supermassive Blackholes, newly catalogued remnants of left over hydrogen, an ancient star found as part of a class observing project, and tales from the launch pad. NBC's "Hubble telescope celebrates 36th anniversary" with Morgan Chesky: https://www.youtube.com/watch?v=
Actual Astronomy - The Observer's Calendar for May 2026
Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan who enjoy teaching astronomy classes and showing the public views through their telescopes. actualastronomy@gmail.com Observer's Calendar for May 2026 on Episode 533 of the Actual Astronomy podcast. I'm Chris and joining me is Shane. We are amateur astronomers who love looking up at the night sky and this podcast is
Awesome Astronomy - AstroCamp Live Show
Paul Hill & Dr. Jenifer "Dr. Dust" Millard host. Damien Phillips, John Wildridge and Dustin Ruoff produce. May Part 1. A show recorded with the happy campers of Cwmdu. We talk smart scopes, late nights, planetary formation, news on Comet 3I and more on the Hubble tension. We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. Just visit: htt
Ask A Spaceman Ep. 271: What Happens When Light Goes Boom?
Cherenkov Radiation! Hosted by Dr. Paul M. Sutter. How can matter ever go faster than light? What happens when it does? Who discovered this, and what is it good for? I discuss these questions and more in today's Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Watch on YouTube: http://www.youtube.com/PaulMSutter Read a book: https://www.
Astronomy Cast Ep. 792: Star Wars Science
https://www.youtube.com/watch?v=-NcTe-98ZlA Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest) Streamed live April 29, 2026. May the fourth be with you! Isn't that what people say on the international holiday known as Star Wars Day? Today we're gonna talk about the science in everyone's favorite sci-fi fantasy stories. Which of it is real, and which is essentially magic? Let'
Travelers in the Night Eps. 877 & 878: Close Grazer & Comet Fragment
Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org From November & December 2025. Today's 2 topics: - On a busy night of asteroid hunting with the 90 inch, University of Arizona's Steward Observatory Bok telescope on Kitt Peak in Arizona, my Cata
Equatorial Sky Guide - May 2026
Hosted by Avivah Yamani, our Director. It's time for a Blue Moon this year! And observers also have the chance to enjoy planetary dances with the Moon and meteor showers! We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can! Share the podcast with your frie
EVSN - After Hours: Launching The Small(er) Things With Exolaunch CEO Robert Sproles
From April 30, 2026. As commercial space becomes a more and more mature industry, we're seeing new needs emerge. Front and the center is the need for someone - or some company - to make it easy for folks in need of a launch to find the right ride share for their satellite, no matter how small. Enter ExoLaunch. In this episode we talk with ExoLaunch CEO Robert Sproles about what their company is ac
Guide To Space - First Ever Picture of a Baby Planet!
https://www.youtube.com/watch?v=Xryd9cC8ZWU Hosted by Fraser Cain. From Jul 4, 2018. For the first time ever, astronomers have captured a direct image of a newly forming planet orbiting around a newly forming star. It's a stunning photograph, not only for the science and what was observed, but what it means the future of exoplanetary astronomy. We've added a new way to donate to 365 Days of Ast
Awesome Astronomy - Artemis Chat
April Part II. Paul Hill & Dr. Jenifer "Dr. Dust" Millard host. Damien Phillips, John Wildridge and Dustin Ruoff produce. This month what else can we chat about? Paul and Jeni talk Artemis II. In this chatty news episode we chat about more Artemis mission shenanigans. We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. Just visit: https:/
Cheap Astronomy - Dear CA #134: Testing Asumptions
Taking nothing for granted. Hosted by Steve Nerlich. Dear Cheap Astronomy – Is space really empty? Well, the universe is filled with stars, planets and galaxies, but sure all the big gaps between those things are mostly empty. Although, let's not forget dark matter. It's likely to have a wider and denser distribution than visible matter, since we think there's four times more of it than there is o
Astronomy Cast Ep. 791: Chang'e Sample Return
https://www.youtube.com/watch?v=Wa1p6AOfQBc Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest) Streamed live on Apr 20, 2026. Last week we talked about samples from other worlds delivered to Earth by meteorites. But sometimes you've gotta do the job yourself. Visit the far off place and bring the samples home. And today we're gonna talk about China's Chang'e sample return pro
Travelers in the Night Eps. 875 & 876: Newly Discovered Crater & Neighborhood Traffic
Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org From November 2025. Today's 2 topics: - Dr. Uisdean Nicholson from Heriot-Watt University and his team of 9 co-authors analyze 3D seismic imaging and drill cuttings from a 1980s oil well to make
The Cosmic Savannah - Ep. 81: One Last Burst: Gamma Rays & Afterglows
Hosted by Dr. Jacinta Delhaize, Dr. Tshiamiso Makwela, Dr. Daniel Cunnama & François Campher In this episode, Jacinta chats with Dr. Simon de Wet about the discoveries he made during his Master's and PhD theses regarding mysterious gamma ray bursts (GRBs). Meanwhile, the team takes a trip back to the Pendulum Room for a final farewell to the old studio. Gamma Ray Bursts are some of the brightest
EVSN - To Artemis, With Love
From April 22, 2026. Season 4, episode 15. This is EVSN's love letter to the Artemis II mission. We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can! Share the podcast with your friends and send the Patreon link to them too! Every bit helps! Thank you! --
Space Stories - Astronomy Words: The Constellations
Hosted by Avivah Yamani, our Director. What are constellations? Explore their history, science, and cultural meanings across civilizations, including how we see them from Indonesia. We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can! Share the podcast wit
Ask A Spaceman - Ep. 270: Is the Universe…Defective?
Hosted by Dr. Paul M. Sutter. What did the Universe do to make so many defects? What happens when they get trapped? And could they be hiding right in front of our noses? I discuss these questions and more in today's Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Watch on YouTube: http://www.youtube.com/PaulMSutter Read a book: https://
Astronomy Cast Ep. 790: Meteorites From Other Worlds
https://www.youtube.com/watch?v=WGx1NvLO8FA Hosted by: Fraser Cain ( @frasercain ) and Dr. Pamela L. Gay ( @CosmoQuest ) Streamed live April 17, 2026. Even though humanity has returned samples from a fraction of the worlds in the solar system, the cosmos has delivered many more without us having to lift a finger. Meteorites. We have meteorites from the Moon, Vesta and even Mars! What have we learn
Travelers in the Night Eps. 373 & 374: Tracking 3I/Atlas & Good Night at Bok
Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org From October & November, 2025 Today's 2 topics: - Scientists are using many approaches to understanding the nature and history of 3I/Atlas the third known interstellar traveler in the night. At a
Actual Astronomy - 12 Months of Messier
Episode 531. Just a reminder for people to write in with their questions for David Nagler. Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan who enjoy teaching astronomy classes and showing the public views through their telescopes. actualastronomy@gmail.com Some binocular astronomy targets: - M40 - 9.6 Magnitude 1.7' This is a pair of faint stars located in Ursa Ma
EVSN - Supervolcanoes: Erupt, Refill, Repeat
From Wednesday, April 15, 2026. This week, in the first of our new shorter and more frequent episodes, we are going to take a look at the interplay of plate tectonics, geology, climate, and life. Specifically, we're looking at the interplay between super volcanoes and us! Did you know Naples is on a supervolcano? Also, in this episode: human sperm get lost in space. We've added a new way to dona
Guide To Space - Bringing Mars To Earth
https://www.youtube.com/watch?v=dmtCX-TBgfE The Plans For a Mars Sample Return Mission. Hosted by Fraser Cain. From Aug 28, 2019. One of the great accomplishments of the Apollo missions was to bring home hundreds of kilograms of lunar rock. Suddenly, geologists had a lifetime's worth of lunar samples captured from several different spots across the Moon. These rocks and dust have been under contin
Cheap Astronomy - Dear CA # 133: Why It's Always C
Cheap Astronomy investigates why light moves at light speed in a vacuum. Hosted by Steve Nerlich. Shining a light! Dear Cheap Astronomy – Why does a photon travel at speed c, part1 It may sound a bit strange to ask why light travels at the speed of light, but that's because c isn't really the speed of light – it's really a measure of the relationship between distance (or space) and time. It's beco
Deep Astronomy - Webb's Deepest Field in 4K - Discoveries of Webb Space Telescope: Ep. 5
https://www.youtube.com/watch?v=JBHzV4y7G5A Hosted by Tony Darnell. From May 23, 2025. The COSMOS-Web dataset represents the deepest look into our universe done by #JWST. We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can! Share the podcast with your fr
Astronomy Cast Ep. 161: Launch Facilities
http://www.astronomycast.com/archive/ From October 26, 2009. Launching a rocket into space requires a big effort on the ground. Space agencies have built up huge infrastructures to store, prepare and launch rockets. Let's take a look at what's involved on the ground at a place like Cape Canaveral. What happens before, during and after a launch. We've added a new way to donate to 365 Days of Astr
Travelers in the Night Eps. 871 & 872: New Mars Trojan & Climate Ignored
Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org From October 2025. Today's 2 topics: - The Lagrange point L4 is 60° ahead of Mars whereas L5 is 60° behind Mars on the red planet's orbital path about the Sun. An object placed at either of these
NOIR Lab - An Extremely Rare Ancient Star
Astronomers have discovered one of the most chemically primitive stars ever identified — an ancient stellar relic that preserves the chemical imprint of the very first stars in the Universe. In this podcast, Dr. Ani Chiti discusses the discovery of this ancient star and what it tells us about star formation in the early Universe. Bios: - Rob Sparks is in the Communications, Education and Engag
EVSN - Science in Pairs & Moon Plans Redux
From April 1, 2026. No foolin'! Once again, we're going to attempt to get you up to date with what is going down at NASA. In addition to NASA updates, we have stories of science that comes in twos. From 2 planets forming in a disk to 2 stars coming together to shine brightly, to two asteroids that together orbit the Sun a bit faster, to two planets that collided, … it is a week for pairs. We've
UNAWE Space Scoop - A Rule-Breaking Supermassive Black Hole
https://spacescoop.org/en/scoops/2602/a-rule-breaking-supermassive-black-hole/ Astronomers have spotted a supermassive black hole, or SMBH, that is breaking all the rules! Well, one rule anyway. It's called eROSITA Final Equatorial Depth Survey, or eFEDS, J084222.9+001000. Whew! It is also called ID830, don't ask me why, so that's what I'll call it. Way easier! Anyway… Most galaxies have a supe
Awesome Astronomy - Gravitational Musing & Nuclear Cruising
Paul Hill and Dr. Jenifer "Dr. Dust" Millard host. Damien Phillips, John Wildridge and Dustin Ruoff produce. This episode Paul and Jeni look at a possible gravitational wave solution to the Hubble tension, NASA's new nuclear deep space engine, Hubble telescope boosting, and more news on the destruction of British science. There is also our monthly skyguide to to get you looking up. We've added
Ask A Spaceman - Ep. 269: Why Are Interstellar Objects So Weird?
Hosted by Dr. Paul M. Sutter. What makes the interstellar comet 3I/Atlas so weird? Why are we finding so many interstellar visitors recently? How are they made, and where do they come from? I discuss these questions and more in today's Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Watch on YouTube: http://www.youtube.com/PaulMSutter R
Astronomy Cast Ep. 789: What Happens When a Planet's Star Dies
https://www.youtube.com/watch?v=Me0MNCIuLs8 Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest) Streamed live on Mar 30, 2026. A star like the Sun only lasts about 10 billion years and it becomes a red giant and finally a white dwarf. This is catastrophic for some of the planets, consumed by the expanding red giant star. But most survive. What happens next in the long, slow co
Travelers in the Night Eps. 869 & 870: Taurid Resonant Swarm & Satellite Ashes
Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org From October 2025. Today's 2 topics: - The planets, millions of asteroids, tens of thousands of comets, distant icy worlds, and countless other bits and pieces of material orbit the Sun. A group
Equatorial Sky Guide - April
Hosted by Avivah Yamani, our Director. What's up in the equatorial sky this month? April 2026 brings a spectacular alignment of Mercury, Mars, and Saturn, forming a tight celestial triangle just before sunrise. We also track the journey of the 'Evening Star' Venus as it meets the Seven Sisters, and prepare for the peak of the Lyrid meteor shower under dark, moonless skies. Plus, don't miss the rar
EVSN - On Background - Comets, the Basics
From Wednesday, March 25, 2026. In this special episode, funded by the National Science Foundation, we're taking a break from the headlines to share the background story of comets. Today, we'll focus on the origin of comets and their basic anatomy, and in future episodes, we'll dive deep into how comets are discovered, what we can learn from them, and how they can literally and figuratively impact
Actual Astronomy - The Observer's Calendar for April 2026
Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan who enjoy teaching astronomy classes and showing the public views through their telescopes. actualastronomy@gmail.com This month in episode 528 we talk about 3 Comets, two of which may end up being very bright. We also touch on some colorful double and carbon stars. There are many spring spirals we help listeners fin
Guide To Space - Project Artemis: NASA's Plans To Return To The Moon By 2024
https://www.youtube.com/watch?v=FCqU0nz6iFU Hosted by Fraser Cain. From May 21, 2019. On Monday, May 13, 2019, NASA declared: "We are going to the Moon to stay" by 2024. It's an exciting announcement; the return to a place humans haven't set foot on in more than 45 years. A serious goal that will test the ability of technology and engineering, as well as the bravery of the men and women who will c
Had Astra Historia - Ep 302 – Take the Gloves Off, Part II
Today's guest: Dr. Richard Tresch Fienberg, astronomer and science communicator, recently served as the Expert Astronomer for Sky & Telescope's September 2025 Astronomy Tour. In our interview, we explore "Galileo's Italy" with him. Though enjoying retirement, he volunteers his time for the American Astronomical Society as Senior Advisor to the CEO, and is a Senior Contributing Editor with Sky & Te
Astronomy Cast Ep. 788: Life's Molecules Form in Space
https://www.youtube.com/watch?v=cJNpipCncKA Hosted by: Fraser Cain ( @frasercain ) and Dr. Pamela L. Gay ( @CosmoQuest ) Streamed live on Mar 23, 2026. The theory of evolution how life takes on its wildly different forms. But how did life get started in the first place? It appears the Universe has been making life's molecules in space for billions of years, setting up the conditions for life… ever
Travelers in the Night Eps. 867 & 868: Daytime Fireball & Inside Venus
Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org From September 2025. Today's 2 topics: - Dr. Bill Cooke of NASA's Meteoroid Environment Office reports that on June 26, 2025 shortly after noon a beachball sized meteoroid traveling at approximat
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