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PODCAST · science
astro[sound]bites
by astrosoundbites
Astrobites for your ears. Three grad students bring you cutting-edge research findings in astronomy and connect the dots between diverse subfields.
Episodes
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Episode 123: Making Mergers Massive
In this episode, Shashank and Cormac introduce our new ASB cohost Vivasvaan! Vivasvaan gives us a broad strokes overview of what galaxy mergers are and why astronomers love to study them while giving us a glimpse into his research involving galaxy mergers and machine learning. We also hear about...
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Episode 122: Fast and Fouriest
In this episode, Shashank, Cole and Cormac take a look at the periodic side of time-domain astronomy through the famed, fabled Fourier transform. Cole entreats us to the time lags in blazars and Cormac gives us a weather update on a brown dwarf. Along the way, we discuss some of the instruments,...
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Episode 121: No Country for Old Material
In this episode, we take a break from our usual astronomical antics to reflect on sustainability in the cosmos. Cormac, Cole and Shashank explore how the Universe manages to recycle material across all scales, from pepping up prostrated pulsars to cleaning up our orbital backyard. We conclude…
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Episode 120: Old Galaxies, New Problems
We’ve known about the existence of galaxies for about a hundred years, but how well do we actually know the extragalactic universe? In today’s episode, we dive deep on the earliest galaxies in the universe. Sanika covers her first bite on paradoxical galaxies that seem to be the deadest where we...
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Episode 119: Gravitational Vibes
In this episode, we dive into the ripples of spacetime with a special focus on gravitational waves. Cole and Cormac are joined by a new host, Sanika, who introduces her research in gravitational wave astrophysics and sets the stage for the discussion. Together, they explore the role of neutron…
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Episode 118: Star-studded submissions
In this episode, as we (at the time of recording) approach Astronomy’s (JWST) awards season, Cormac and Cole shed some light on just how ideas become astronomical datasets. Our two putative principal investigators discuss why grad students should consider applying for telescope time, the main...
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Episode 117: A Field Day
In this episode, we move away from point particles to talk about fields. Shashank, Cole and Cormac start with a discussion of different kinds of fields in astrophysics. Then, Cole describes Lagrange points and why they can be useful for satellites and asteroids seeking a safe place to camp out…
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Episode 116: Love’s Gonna Get you killed, but Tide’s gonna be the death of you
In our valentines’ day special, Shashank, Cole, and Cormac explore the dating lives of stars and other compact objects by looking at the romantic couples of astrophysics: binary systems. Immediately ruining this theme, Shashank covers some particularly messy breakups (though these lovers are able...
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Episode 115: Star Wrapped Holiday Special
Apply to join us as a co-host! https://astrosoundbites.com/recruiting-2025 In today’s extra-special seasonal episode, Cormac, Lucia and Shashank share some of their highly curated metrics inspired by Spotify wrapped to end our a[s]b year. Much like ourselves, this episode is a mixed bag - we hope...
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Episode 114: A World of Disc-overy
Apply to join us as a co-host! https://astrosoundbites.com/recruiting-2025 This week, Shashank, Cole, and Cormac dive into the many disks of the universe, from planet-forming disks to AGN and galactic structures. Cole explores a misbehaving protoplanetary disk that hints at chaotic early planet...
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Episode 113: Black Holes? Here? It’s more likely than you think.
Episode 113: Black Holes? Here? It’s more likely than you think. In today’s episode, Cole, Cormac, and Shashank celebrate our glorious return from hiatus by tackling an astronomical favorite: black holes. These guys are important to astronomers for a wide range of reasons, but what happens when…
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Episode 112.5: Extremely Looming Trouble?
In today’s mini-episode, Cormac highlights how a proposed industrial megaproject threatens the pristine observing conditions at Paranal Observatory - home of the European Southern Observatory’s Very Large Telescope, as well as the upcoming Extremely Large Telescope and Cherenkov Telescope Array...
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Episode 112: It’s not fun to be in a YMC, eh?
Episode 112: It’s not fun to be in a YMC, eh? Apply to join us as a co-host! https://astrosoundbites.com/recruiting-2025 In today’s episode, Cormac, Shashank and Lucia come together to crack open the craziness inside Young Massive (Stellar) Clusters - some of the most exciting neighbourhoods in…
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Episode 111: Mergers for Nothing and Your Chirps for Free
The only thing better than studying the largest compact objects in the universe is smashing them together. In this episode, Lucia, Shashank, and Cole cover binary black hole mergers and what these violent events can tell us about our universe! Lucia talks us through some mergers' specific spins…
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Episode 110: Bayesian Biosignatures
Apply to join us as a co-host! https://astrosoundbites.com/recruiting-2025 This week, Shashank, Cole and Cormac discuss a concept that has come up on many an ASB episode past: Bayesian statistics. They start by trying to wrap our heads around what a probability really means. Cole introduces us to…
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Episode 109: Big, Small and In-Between
Apply to join us as a co-host! https://astrosoundbites.com/recruiting-2025 This week, Lucia, Cole and Cormac discuss cosmic sandwich kids: intermediate mass black holes. Where are they hiding? How do they form? And can they grow up to become supermassive black holes? To answer questions like…
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Episode 108: 2000 Meters Under The Mediterranean
This week, Lucia, Cormac, and Shashank dive into the depth of the Mediterranean Sea to discover more about the most energetic neutrino measured to date, which had an energy of a whooping 120 PeV! They then pay a visit to the South Pole to discuss what the ICECUBE neutrino observatory can tell us...
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Episode 107: Things That Go Blip in the Night
The more things change, the more they, uh, change. This episode Cole, Shashank, and Cormac cover the exciting events that change what we see on the night sky. Ancient astronomers tracked the motions of the planets and the arrival of “guest stars” (supernovae), and nowadays we’re lucky enough to…
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Episode 106: Sabrina’s Super Sad Sendoff
In this episode, we say goodbye to one of our beloved hosts, Sabrina Berger. We take a voyage through the depths and breadths of Sabrina’s research experience. Cole tells us how Sabrina investigates JWST’s ability to estimate the masses of galaxies through the glare of their quasars, and Lucia...
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Episode 105.5: NASA Needs Your Help!
In this episode, the (domestic) American sector of Astro[sound]bites covers the recent proposed budget cuts to NASA, the largest in NASA’s entire history. We cover the downsides that these cuts would have for science and the economy, and what you can do to speak out. How to reach out: Find your...
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Episode 105: Citizen Brain
In today’s episode, Cormac, Cole and Lucia catch you up with all things Citizen Science. In the epoch of ChatGPT, Grok and Gemini (no, not the telescope), it’s easy to forget about the 20 Watt computer you’re using to read this sentence. Yes, even YOU can contribute to cutting-edge astronomical...
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Episode 104: Star Destroyers
That stars die will be old news for most listeners. But sometimes, stars don’t just die, they get ripped apart by supermassive black holes. Cormac, Cole and Lucia discuss these so-called tidal disruption events. Specifically, how these events are connected to X-ray absorption features called...
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Episode 103: Lambasting Lambda CDM
Shoot, someone made the mistake of letting Cole pick the episode topic. In this episode, Cole, Cormac, and Shashank talk about the big boy on cosmology campus: Lambda CDM. This model has gotten a bit too big for its britches we think: what are the things about the universe that this model can’t...
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Episode 102: Per-severance Ad Astra
In this episode, Cormac, Lucia and Cole lift the lid on the lifecycle of space missions by peering into a preponderance of proposals. If you’ve ever wondered how your favourite telescope, rover or probe made it into space, then wonder no more. Lucia brings us a novel way to track potentially...
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Episode 101: Weather Woes
Episode 101: Weather Woes In this episode, we take a dive into weather phenomena in space. Shashank, Cormac and Lucia discuss what the terms hot and cold mean in space and the temperature ranges we tend to see outside the Solar System and the galaxy. Then, Cormac tells us about the climate on...
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Episode 100: Be There or Be Ten Squared
Astrobites turns 100! For our ten squared-th episode we take a tour of all of the extremes of astrophysics: the heaviest and the lightest, the fastest and the slowest, the brightest and dimmest. In doing so, Shashank covers an astrobite on itty bitty particles that pack a big punch, Lucia talks...
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Episode 99: The Grand Finale
Danger - explosive! This week’s episode is all about supernovae. These star-ripping, neutrino spewing explosions are important to various fields of astrophysics. Cormac, Cole, and Lucia discuss just when stars actually go supernova. And also, whether we can use gravitational waves to tell which...
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Episode 98: When PIGS Fly
In this episode, Cormac, Shashank and Cole dig deep into Galactic Archaeology as we look into the past of our Milky Way. Cole brings us a catastrophic computational collision, while Shashank gives us the low-down on low-metallicity, and we see just how the (Gaia) sausage gets made. We also…
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Episode 97: Cosmic Time Machines
In this episode, Shashank, Cole and Lucia bend time in their debut podcast together as we talk about the various ways astronomy is like time travel. Lucia gives us a peek into the past with the storied supernova Cas A, while Cole brings us on a nostalgic quest into gravitational wave memory. We...
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Episode 96: kiErsten’s Exoplanetary Elemental Exit Episode
This episode marks Kiersten’s last astro[sound]bites episode (and also side note – we’re posting this on her birthday!). To recognize Kiersten for her incredible time as a co-host, we take a journey through her academic paper trail by discussing her papers on how magma and metallicities affect…
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Episode 95: IMPReSsive Research
In this week's episode, we take you on a two-part journey to Europe! First, Lucia and Cormac guide you through the differences of graduate programs in Europe and the US. Then, we jump into a series of mini-interviews with fellow PhD students about their research. We journey through a wide range…
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Episode 94: The Floor Is Lava!
Was the floor in your childhood home ever lava? If so, you may have been training to visit these spicy magma-filled exoplanets! In this episode, we're turning up the heat and investigating what makes magma/lava so important for potential extraterrestrial life. Sabrina takes us to the poster child...
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Episode 93: Itsy Bitsy Teeny Weeny Primordial Black Hole Machiney
In this week’s episode, we take a look at the hottest trend in dark matter candidates - Primordial Black Holes. They’re like black holes, only smaller (in some cases)! Join us as we see what all the fuss is about. Kiersten shares a story of a black hole playing video games inside a star and...
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Episode 92.5: The Ship of 3-seus
We've reached a pivotal moment for astro[sound]bites: the podcast era where each of the original co-hosts has been replaced. Just like the Ship of Theseus, we ask: Is astro[sound]bites still the same show, even though all its original components have been replaced? We believe it is, and we’re...
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Beyond- Astronomy is a little Mental
Episode 92: Beyond- Astronomy is a little Mental Astronomy is hard! And in ways that extend far beyond the science we do every day. In this Beyond episode, Kiersten and Cormac talk all about mental health in astronomy and the structural issues that may be contributing to things like burnout and...
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Episode 91: A Uranian FareWill
91 is the atomic number of protactinium. Speaking of protracted, it’s finally time to say FareWill to Dr astroSaundbites himself, after five years of co-hosting our wonderful podcast. We begin with a deep dive into his Uranian adventures that might offer the key to our next mission there. We then...
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Episode 90: The Great H0 Debate
How fast is the universe expanding? It turns out this important value, the Hubble constant (H0), is under constant debate. The two main teams have numbers that disagree by over 5 standard deviations! Today on a[s]b, we resolve the Hubble tension once and for all, as Cormac and Kiersten square off...
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Episode 89: Extremely Emotional Exoplanets
In this episode, we hear about Kiersten and Will’s epic adventures in both hemispheres! Both Kiersten and Will watched the eclipse that passed through North America on April 8, 2024 and are still buzzing with excitement. Kiersten tells us about a recent paper that explores why planets might act…
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Episode 88: The Luck of the Irish
In celebration of the a-bit-over-a-week after St. Patrick’s (definitely not Patty’s) Day, we bring you another Ireland-related episode. Due to historically unsupported stereotypes about the Irish being lucky, we bring you two astrobites busting with cosmic coincidences and a dash of luck.…
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Episode 87.5: The Shamrock Shake-Up
In celebration of St. Patrick’s (not Patty’s) Day, we share a super short sneak peek at next week’s episode, featuring fun Irish astronomical facts. We’re calling it the Shamrock Shake-up! In addition to the astronomical facts, Will takes us on a journey to the past with some wild Irish lore of…
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Episode 87: Unexpected Gravitational Waves
We talk about gravitational waves again, but this time, in ways you wouldn’t expect. Cormac tells us how you could use gravitational waves to study the interior of the Sun, if the alignment is just right. Sabrina explores whether gravitational waves could be detected by Earth’s magnetosphere...
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Episode 86: Indigenous Astronomy Part II - Science of the First Astronomers
In the second episode of the astro[sound]bites series focusing on Indigenous astronomy, we interview Duane Hamacher, a physics professor at the University of Melbourne and a world leading researcher in Indigenous astronomy. Duane shares his journey from Missouri to pursuing a PhD in Australia and...
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Episode 85: Indigenous Astronomy Part I - Living Descendants of the First Astronomers
Did you know that Indigenous communities around the world have been doing astronomy since ancient times? Indigenous peoples studied the night sky with great precision. In this episode, we talk to five indigenous astronomers from across the world to understand how their identity and communities...
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Episode 84.5: Come Podcast With Us!
Did we mention we’re recruiting two new co-hosts? And also our new Mars Office Manager and Chief Astrologer? Lots of exciting things are happening on a[s]b (and on Mars) in 2024 and we want you to be a part of it! Find out more and apply to be a co-host here:...
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Episode 84: Abominable Ice
It’s all about ice, ice, baby! In this episode, Sabrina takes us on a trek to Antarctica. While we hide from Cthulhu, she tells us how the frigid observatory IceCube is using elusive neutrinos to tell us about the Milky Way. Meanwhile, our meteorologist Will does some investigation of the flavors...
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Episode 83: Stellar Shrinkflation
In this week’s episode, Cormac has somehow made it to hosting a second time (applause). This time, we discuss the smallest, reddest and exoplanetiest(?) stars - M dwarfs! Find out why we call them that, and why these temperamental ‘tars are interesting for exoplanets. Sabrina tells us about...
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Episode 82: So the universe thinks it can dance?
This week, our astro[sound]bites co-host crew starts a dance crew with the help of Kiersten, a former professional ballerina. We get a sample of Kiersten’s ballet skills through her astrobite, which tells us all about the secret spinning life of black holes. Our space sound sounds like something...
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Episode 81: Hubble’s Hydra
In this week’s episode, Cormac makes his hosting debut as we talk about the most pressing threat to modern Astronomy (other than a worldwide coffee shortage) – megaconstellations! Despite sharing a majority of syllables with the collective noun of asterisms we all know and pretend to remember,...
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Episode 80: The Pulsar Boomerang
In this week’s episode, we meet some of the animals in the neutron star zoo through astrobites with two surprising observations. Will tells us about a mysterious signal from a magnetar that appeared two years ago for 20 minutes and has yet to come back. Meanwhile, Cormac provides Will’s magnetar...
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Episode 79: The Vanishing Act
Spooky season is here! In this episode, we’re investigating the ghostly disappearances of astrophysical objects. Sabrina does some detective work to solve the mystery of a missing black hole, and Kiersten tries to convince her that Halloween is the best holiday. Meanwhile, Cormac convenes with...
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ABOUT THIS SHOW
Astrobites for your ears. Three grad students bring you cutting-edge research findings in astronomy and connect the dots between diverse subfields.
HOSTED BY
astrosoundbites
CATEGORIES
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Frequently Asked Questions
How many episodes does astro[sound]bites have?
astro[sound]bites currently has 133 episodes available on PodParley. New episodes are automatically indexed when they're published to the podcast feed.
What is astro[sound]bites about?
Astrobites for your ears. Three grad students bring you cutting-edge research findings in astronomy and connect the dots between diverse subfields.
How often does astro[sound]bites release new episodes?
astro[sound]bites publishes regularly with 133 episodes available. Check the episode list for the typical release schedule.
Where can I listen to astro[sound]bites?
You can listen to astro[sound]bites on PodParley by clicking any episode. We provide an embedded audio player for direct listening, and you can also subscribe via your preferred podcast app using the RSS feed.
Who hosts astro[sound]bites?
astro[sound]bites is created and hosted by astrosoundbites.
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