Space Radio

Paul M. Sutter

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In their own words

Space Radio is your weekly guide to the universe, featuring the latest news in astronomy, physics, space travel, and discussions on the nature of science and the relationship between science and society. The best part: answers to your questions about space and time! Hosted by astrophysicist and "Agent to the Stars" Paul M. Sutter.

As heard by us

Based on 6 episodes we listened to · September 2026

Paul Sutter makes cosmic questions legible by tracing bold ideas back to observations, physical constraints, and the limits of current models.

Space Radio turns listener questions into lively tours of the machinery behind cosmic claims. Paul Sutter, an astrophysicist, moves comfortably from black holes and dark matter to quarks, galaxy clusters, vacuum energy, and possible planets around nearby stars.

Read our full review in PlayNext →

Why you'd press play

A parallel-universe headline has you reaching for Paul Sutter's Antarctic neutrino reality check.

Press play if you want

  • to follow a listener's dark-matter question from quarks to what black holes can swallow
  • to picture proton collisions as messy car crashes instead of tidy three-quark diagrams
Read the full recommendation in PlayNext →

Talks about

Best episodes of Space Radio

Short reviews from the PlayNext desk, based on the episodes we processed.

Close but no cigarJun 13, 2020

A live astronomy conversation that makes uncertainty part of the appeal.

Paul Sutter turns a listener driven live space show into a clear, approachable talk on black holes, vacuum energy, energy density, and the odd idea that an empty universe is not empty.

Better Luck Next Time, SpaceXMay 30, 2020

A lively astrophysics episode turns an Antarctic anomaly into a clear lesson on evidence and headlines.

Space Radio starts with a quick jab at SpaceX, then settles into the stronger thread: how a flashy parallel-universe claim can travel much farther than the evidence behind it.

An Uncomfortably Close Black HoleMay 9, 2020

A listener question connects quarks, dark matter, and black holes while keeping the unknowns intact.

Space Radio takes a listener's dark-matter question and turns it into a brisk, orderly tour through what ordinary matter can account for, and where the mystery still sits outside the standard model.

Proxima c peek-a-booApr 25, 2020

A clear, observation-led test of black holes as dark matter, with Proxima C as the opening hook.

Space Radio pairs a tempting astronomical question with a tougher accounting problem: whether Proxima C has really been seen, and whether black holes could make up dark matter.

The Lumpy UniverseApr 11, 2020

A slight difference between galaxy clusters opens a bigger question about whether the universe is lopsided.

Space Radio turns a listener-style question about a lopsided universe into a tidy investigation of how astronomers test whether galaxy clusters act differently depending on direction.

Gary the GalaxyApr 4, 2020

A lively, tactile trip from the Milky Way's edge to proton-collision wreckage.

Space Radio treats the universe as an open line, starting near the edge of the Milky Way before swinging through a socially distant solar-system tour and into the violent interior of proton collisions.

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Episodes

  1. 1

    Simulating Mars Habitats with Kai Staats – Space Radio Live!

    This episode of Space Radio Live features astrophysicist Paul Sutter interviewing Kai Staats about simulating Mars habitats and space exploration research.

    ·34m
  2. 2

    Hycean Habitable Worlds – Space Radio Live!

    This episode of Space Radio Live explores the exciting possibility of life on Hycean water worlds and how scientists might soon detect it.

    ·31m
  3. 3

    NASA Has a Lunar Gateway, and You're Not Invited

    This episode discusses NASA's Lunar Gateway project and why ordinary people won't be able to visit it, featuring astrophysicist Paul Sutter.

    ·31m
  4. 4

    Is Oumuamua Alien Tech, and Is Science Anti-Alien??

    This episode explores the controversial question of whether the interstellar object Oumuamua could be alien technology and examines potential biases in scientific discourse about extraterrestrial phenomena.

    ·37m
  5. 5

    The Election Day Asteroid is Lame

    This episode of Space Radio discusses the election day asteroid and takes listener questions about various astronomical topics.

    ·24m
  6. 6

    Look Ma, I Got a Comet!

    This episode of Space Radio features astrophysicist Paul Sutter discussing comets and answering listener questions about the universe, along with news segments like 'Blue Shift' and 'Inference is Destiny'.

    ·24m
  7. 7

    That's a Big Black Hole!

    This episode of Space Radio features astrophysicist Paul Sutter discussing the biggest black hole in the universe, taking listener questions, and connecting with a global audience of space enthusiasts.

    ·24m
  8. 8

    Turning the Tables on Fraser Cain, Publisher of Universe Today – Space Radio Live!

    This episode features an interview with Fraser Cain, publisher of Universe Today, discussing space and astronomy topics on the Space Radio Live podcast.

    ·37m
  9. 9

    Seeing Behind a Black Hole – Space Radio Live!

    This episode of Space Radio Live features astrophysicist Paul Sutter discussing how to see behind a black hole, based primarily on listener questions from a global audience.

    ·32m
  10. 10

    An Impromptu Discussion about the Science of JWST, and Much More – Space Radio Live!

    This is an impromptu live episode where the host discusses the cancellation of a planned interview with Paul Geithner about the James Webb Space Telescope due to weather issues, leading to an unplanned solo discussion about space science.

    ·29m
  11. 11

    SR 144: Astronomers vs. SpaceX: FIGHT! - Space Radio Live!

    This episode discusses the conflict between SpaceX's satellite operations and astronomy, featuring scientific debate and listener questions.

    ·35m
  12. 12

    How Politics Shaped Project Apollo with Teasel Muir-Harmony

    This episode features an interview with Teasel Muir-Harmony about how political factors influenced the Project Apollo space program.

    ·31m
  13. 13

    Everybody Is Going to Mars!

    Astrophysicist Paul Sutter hosts a live Space Radio episode focused on Mars, featuring listener questions and international audience participation.

    ·33m
  14. 14

    FIN, We'll Talk About the UFO Report – Space Radio Live!

    Astrophysicist Paul Sutter hosts a live episode of Space Radio discussing the UFO report with listener questions and global audience participation.

    ·31m
  15. 15

    On the Launch Pad with Christian Ready – Space Radio Live!

    This episode of Space Radio features host Paul Sutter introducing the show's penultimate live broadcast with guest Christian Ready, highlighting listener engagement and global audience participation.

    ·37m
  16. 16

    Helicopters on Mars

    This episode of Space Radio discusses the deployment of a helicopter on Mars and explores various cosmic topics through listener questions.

    ·24m
  17. 17

    SR 142: The BEST April Fool's Physics Papers of 2021 - Cheese Radio Live!

    This April Fool's Day episode of Cheese Radio features a humorous space-themed show where the host samples cheeses while discussing amusing physics papers from Earth scientists.

    ·30m
  18. 18

    Wet Mars for Real?

    This episode of Space Radio, hosted by astrophysicist Paul Sutter, discusses the possibility of a wet Mars and takes listener questions about the universe.

    ·24m
  19. 19

    This is What Happens When Black Holes Eat Too Much Cheese – Space Radio Live!

    This episode of Space Radio Live features astrophysicist Paul Sutter discussing chaotic cosmic events like stars and black holes consuming each other, based on listener questions, as part of the show's final episodes.

    ·32m
  20. 20

    Do We Really Know the Age of the Universe?

    Astrophysicist Paul Sutter discusses the age of the universe in a calmer episode following a previous intense rant.

    ·32m
  21. 21

    Is there really life on Venus?

    This episode of Space Radio discusses the possibility of life on Venus while taking listener questions about astronomy and space exploration.

    ·24m
  22. 22

    Are Aliens Calling Us from Proxima Centauri? No.

    This episode of Space Radio discusses a mysterious radio signal from Proxima B, exploring whether it could be alien communication and providing scientific insights.

    ·33m
  23. 23

    Giant Death Beams in the Ancient Universe!

    Astrophysicist Paul Sutter hosts a live space science show discussing cosmic death rays and engaging with listener questions from around the world.

    ·33m
  24. 24

    That Time Astronomers Lost a Black Hole

    This episode of Space Radio explores missing black holes, discussing topics like singularities and spins while engaging with listener questions from around the world.

    ·32m
  25. 25

    The Future of Gravitational Waves with Dr. Brittany Kamai

    This episode features an interview with Dr.

    ·34m
  26. 26

    JWST Update with Paul Geithner, Deputy Project Manager, Technical – Space Radio Live!

    This episode features an interview with Paul Geithner, deputy project manager technical for the James Webb Space Telescope at NASA, discussing updates and insights about the telescope.

    ·35m
  27. 27

    "Dream Big!" with Abigail "Astronaut Abby" Harrison

    This episode features an interview with Abigail 'Astronaut Abby' Harrison, who founded the nonprofit Mars Generation to promote space exploration and STEM education with the goal of becoming the first astronaut to travel to Mars.

    ·36m
  28. 28

    New Physics with the Cosmic Microwave Background? No.

    ·34m
  29. 29

    I Took a Photo-Graph of an Exo-Planet

    This episode of Space Radio features astrophysicist Paul Sutter discussing photographing an exoplanet and answering listener questions about the universe.

    ·24m
  30. 30

    Arecibo Collapses!

    This episode of Space Radio, hosted by astrophysicist Paul Sutter, focuses on mourning the loss of the Arecibo Observatory and engaging with listener questions in a live format.

    ·32m
  31. 31

    Supernova vs. White Dwarf: Who Wins?

    This episode of Space Radio, hosted by astrophysicist Paul Sartor, discusses a cosmic knockout between a supernova and a white dwarf while taking listener questions about space phenomena.

    ·24m
  32. 32

    Have we Finally Solved Furbies?

    This episode of Space Radio introduces upcoming discussions on magnetars and fast radio bursts, announces a new cheese sponsor, and engages with live listeners from around the world.

    ·33m
  33. 33

    The Last Adventure – Space Radio Live!

    This is the final episode of Space Radio, where astrophysicist Paul Sutter hosts a live Q&A session, encourages last-minute listener voicemails, and promotes the show's live streams.

    ·1h 18m
  34. 34

    The Dark Energy Survey Surveys… The Dark - Space Radio Live!

    This episode of Space Radio Live discusses the latest results from the Dark Energy Survey (DES) with astrophysicist Paul Sutter, exploring cosmic mysteries and engaging with a global audience of space enthusiasts.

    ·33m
  35. 35

    SR 145: Hunting for Exoplanets with Dr. Jessie Christiansen - Space Radio Live!

    This episode features an interview with Dr.

    ·35m
  36. 36

    A Conversation with Moiya McTier: Astrophysicist, Folklorist, & Science Communicator

    This episode features an interview with Moiya McTier, an astrophysicist and folklorist, discussing her unique background and work in science communication.

    ·35m
  37. 37

    Space Elevators with Tim Chrisman and the Foundation for the Future

    This episode features an interview with Tim Chrisman, founder of the Foundation for the Future, discussing space elevators and his background in the Army and CIA.

    ·31m
  38. 38

    Space Elevators with Tim Chrisman and the Foundation for the Future

    ·32m
  39. 39

    New Physics with the Cosmic Microwave Background? No.

    This episode of Space Radio, hosted by astrophysicist Paul Sutter, explores potential hints of new physics in the cosmic microwave background while engaging with listener questions and live audience interactions.

    ·33m
  40. 40

    Astronomers without Borders

    This episode features an interview with Mike Simmons, founder of Astronomers Without Borders, discussing the organization's mission to connect astronomy enthusiasts worldwide through outreach and education.

    ·35m
  41. 41

    Water on the Moon…in Broad Daylight!?

    This episode discusses recent scientific news about the discovery of water on the moon in daylight conditions, exploring its implications for space exploration and astrophysics.

    ·31m
  42. 42

    SR 143: SETI with Dr. Jason Wright, Penn State University - Space Radio Live!

    This episode of Space Radio features astrophysicist Paul Sutter introducing a special guest, Dr.

    ·40m
  43. 43

    Arecibo Collapses

    Dec 4, 2020
  44. 44

    Astronomers without Borders

    Nov 20, 2020
  45. 45

    Have we Finally Solved Furbies?

    Nov 13, 2020
  46. 46

    NASA Has a Lunar Gateway, and You're Not Invited

    Nov 6, 2020
  47. 47

    Water on the Moon...in Broad Daylight!?

    Oct 30, 2020
  48. 48

    The Sun is on Fire!!!

    In this episode of Space Radio, host Paul Sutter introduces the topic of the sun being on fire and discusses upcoming segments, including launching a book into space and the National Society of Black Physicists.

    Jun 24, 2020·24m·2 clips
  49. 49

    Close but no cigar

    Paul Sutter discusses the delayed James Webb Space Telescope and the unconfirmed discovery of an Earth-like exoplanet, then answers listener questions on space-time expansion and vacuum energy before highlighting stark racial disparities in physics education.

    Jun 13, 2020·24m·2 clips
  50. 50

    We sent humans into space...again!

    In this episode of Space Radio, host Paul Sutter introduces the topic of human space travel and emphasizes the show's focus on listener questions about astronomy and science.

    Jun 6, 2020·24m·2 clips
  51. 51

    Better Luck Next Time, SpaceX

    Hidden gem

    ["Space Radio's Better Luck Next Time, SpaceX opens with a scrubbed NASA-SpaceX Crew Dragon launch to the International Space Station, delayed 15 minutes by Florida weather and rescheduled for Saturday, May 30 at 3:22 p.m.

    May 30, 2020·24m·1 clip
  52. 52

    An Uncomfortably Close Black Hole

    Hidden gem

    Space Radio with Paul Sutter opens on a black hole in HR 6819, about 1,000 light-years away in Telescopium, which he says is three times closer than the previous record holder at roughly 3,000 light-years.

    May 9, 2020·24m·1 clip
  53. 53

    Proxima c peek-a-boo

    Space Radio opens with Proxima Centauri, a little more than four light-years away, and a disputed second planet, Proxima C, whose claimed image looks like 'space fuzz.' John asks whether dark matter is just matter trapped inside black holes, and Paul answers with microlensing counts, stellar-collapse limits, and the cosmic microwave background.

    Apr 25, 2020·24m·2 clips
  54. 54

    The Lumpy Universe

    Hidden gem

    Space Radio's "The Lumpy Universe" opens with Pia from Copenhagen asking whether dark energy could vary by direction after reports that the universe may expand faster in one sky region than another.

    Apr 11, 2020·24m·1 clip
  55. 55

    Gary the Galaxy

    Paul Sutter, an astrophysicist at Stony Brook University and the Flatiron Institute, opens Space Radio with a paper on the Milky Way's edge and says the dark-matter halo may reach almost 2 million light years across.

    Apr 4, 2020·24m·2 clips
  56. 56

    The Science Behind #FlattenTheCurve

    Mar 28, 2020·24m
  57. 57

    Coronavirus can't stop astronomy!

    Mar 21, 2020·24m
  58. 58

    Iron Rain of Awesomeness

    Mar 14, 2020·24m
  59. 59

    We've Got a Mini-moon!

    Mar 7, 2020·24m
  60. 60

    We've Got a Mini-moon!

    Feb 29, 2020·24m
  61. 61

    Secrets of Arrokoth

    Feb 22, 2020·24m
  62. 62

    The Death of Spitzer

    Feb 8, 2020·24m
  63. 63

    Crashing Satellites over Pittsburgh!

    Feb 1, 2020·24m
  64. 64

    The Origin of Furbies

    Jan 11, 2020·24m
  65. 65

    Launching into 2020

    Jan 4, 2020·24m
  66. 66

    Enceladus Has Stretch Marks

    Dec 21, 2019·24m
  67. 67

    Enceladus Has Stretch Marks

    Dec 14, 2019·24m
  68. 68

    No Cheese for Boeing

    Dec 7, 2019·24m
  69. 69

    Is Starlink ruining astronomy?

    Nov 23, 2019·24m
  70. 70

    Update from beyond the solar system

    Nov 9, 2019·24m
  71. 71

    How to Make a Magnetar (Maybe)

    Oct 26, 2019·24m
  72. 72

    Why I Didn't Win the Nobel Prize

    Oct 19, 2019·24m
  73. 73

    A Very Moist Exoplanet

    Sep 14, 2019·24m
  74. 74

    A Magical Color-Changing Asteroid!

    Sep 7, 2019·24m
  75. 75

    Hopping around the Galaxy

    Aug 31, 2019·24m
  76. 76

    Gas Moons and the Betterment of Humanity

    Aug 24, 2019·24m
  77. 77

    Super-Earth? Over-rated.

    Aug 17, 2019·24m
  78. 78

    Goodbye Voyager 2

    Aug 3, 2019·24m
  79. 79

    Goodbye Voyager 2

    Jul 15, 2019·24m
  80. 80

    Turtles Breathe from their Butts

    Jul 6, 2019·24m
  81. 81

    Will James Ever Make It To Space?

    Jun 24, 2019·24m
  82. 82

    Delicious White Salmon

    May 30, 2019·24m
  83. 83

    We're Gonna Need a Bigger Telescope

    May 25, 2019·24m
  84. 84

    The First Stars Were Weird

    May 18, 2019·24m
  85. 85

    The Universe is Kind of Big, I Guess

    May 11, 2019·23m
  86. 86

    Titan is Weird

    May 4, 2019·24m
  87. 87

    Who Farted on Mars?

    Apr 27, 2019·24m
  88. 88

    Yup It's a Black Hole Alright

    Apr 13, 2019·25m
  89. 89

    Hey Let's All Look at a Black Hole

    Apr 6, 2019·25m
  90. 90

    Nobody Likes You, Neptune

    Mar 30, 2019·25m
  91. 91

    Kiss My Asteroid

    Mar 9, 2019·24m
  92. 92

    Kiss My Asteroid

    Feb 23, 2019·24m
  93. 93

    Let's Not Go To Mars After All

    Feb 16, 2019·24m
  94. 94

    Earth Earth Earth Moon Earth

    Feb 2, 2019·25m
  95. 95

    High Noon on Saturn

    Jan 26, 2019·24m
  96. 96

    Dirty Space Bugs

    Jan 19, 2019·24m
  97. 97

    Dirty Space Bugs

    Jan 12, 2019·24m
  98. 98

    You are not a hologram

    Jan 5, 2019·25m
  99. 99

    Stupid Red Dust

    Dec 29, 2018·25m
  100. 100

    Astronomy for Ancients

    Dec 22, 2018·24m
  101. 101

    The Altiplano

    Dec 15, 2018·25m
  102. 102

    The Stars Are Out Tonight

    Dec 8, 2018·25m
  103. 103

    What's Brewing? Science

    Dec 1, 2018·23m
  104. 104

    Bad Science

    Nov 24, 2018·24m
  105. 105

    Dark Matter Livestream

    Nov 17, 2018·24m
  106. 106

    Big, Dumb Rock

    Nov 10, 2018·25m
  107. 107

    Goodnight, Sweet Prince

    Nov 3, 2018·25m