<description>In this episode, Matt opens with forgotten space hero John Bevis’ birthday and a cosmic musing on relativistic dust, black holes, and the unimaginable energies hidden in tiny things.

Then astrophysicist and author Ethan Siegel joins the show to discuss his new book, The Grand Cosmic Story, a sweeping journey from the birth of the cosmos to the emergence of life and intelligence. Together they explore the importance of critical thinking, evidence, and scientific honesty in an age when misinformation moves faster than light itself.
</description>

In this episode, Matt opens with forgotten space …

In this episode, Matt opens with forgotten space hero John Bevis’ birthday and a cosmic musing on relativistic dust, black holes, and the unimaginable energies hidden in tiny things.

Then astrophysicist and author Ethan Siegel joins the show to discuss his new book, The Grand Cosmic Story, a sweeping journey from the birth of the cosmos to the emergence of life and intelligence. Together they explore the importance of critical thinking, evidence, and scientific honesty in an age when misinformation moves faster than light itself.


#322 - Ethan Siegel - Grand Cosmic Story

<description>In this episode, Matt is joined by acclaimed science writer Brian Clegg to explore the dazzling world of the multiverse.  Brian unpacks the science and speculation behind one of physics’ most mind-bending ideas. Together, they discuss why the multiverse has captivated scientists and storytellers alike, the fine line between science and philosophy, and what it all means for our place in the cosmos.   Brian Clegg is expanding our minds and what’s possible in his upcoming title The Multiverse: When One Universe Isn’t Enough (23rd October 2025).</description>

In this episode, Matt is joined by acclaimed scie…

In this episode, Matt is joined by acclaimed science writer Brian Clegg to explore the dazzling world of the multiverse.  Brian unpacks the science and speculation behind one of physics’ most mind-bending ideas. Together, they discuss why the multiverse has captivated scientists and storytellers alike, the fine line between science and philosophy, and what it all means for our place in the cosmos.   Brian Clegg is expanding our minds and what’s possible in his upcoming title The Multiverse: When One Universe Isn’t Enough (23rd October 2025).

#321 - Brian Clegg - The Multiverse

<description>Andy Saunders joins Matt to talk about his new book Gemini and Mercury Remastered. We dig into the forgotten missions that paved the way for Apollo, the astonishing images he’s restored from NASA’s archives, and the human dramas behind them from blown hatches to dangerous spacewalks. </description>

Andy Saunders joins Matt to talk about his new bo…

Andy Saunders joins Matt to talk about his new book Gemini and Mercury Remastered. We dig into the forgotten missions that paved the way for Apollo, the astonishing images he’s restored from NASA’s archives, and the human dramas behind them from blown hatches to dangerous spacewalks. 

#320 - Andy Saunders - Gemini and Mercury remastered

<description>Matt and Jamie dive headfirst into the cosmic foam to explore the Bubble Universe, the mind-bending idea that our universe might be just one of countless “bubbles” in a vast multiverse. From the physics of cosmic inflation and the mysteries of the cosmic microwave background, to the philosophical head-scratchers of infinite realities, they mix hard science, playful analogies, and a touch of pop culture chaos.</description>

Matt and Jamie dive headfirst into the cosmic foa…

Matt and Jamie dive headfirst into the cosmic foam to explore the Bubble Universe, the mind-bending idea that our universe might be just one of countless “bubbles” in a vast multiverse. From the physics of cosmic inflation and the mysteries of the cosmic microwave background, to the philosophical head-scratchers of infinite realities, they mix hard science, playful analogies, and a touch of pop culture chaos.

#319 Bubble Universe

<description>Matt welcomes Dr. Saralyn Mark, a world-renowned leader in women's health, space medicine, and innovation in gender-specific design. Dr. Mark is an endocrinologist, geriatrician, and former Senior Policy Advisor at the White House Office of Science and Technology Policy. She’s advised organizations such as NASA and the Department of Health and Human Services, and is the founder of iGIANT, a groundbreaking nonprofit accelerating gender-specific innovation across sectors, from health to space exploration. Dr. Mark is also the author of the fascinating book, Stellar Medicine: A Journey Through the Universe of Women’s Health, and today we’ll be exploring how insights from space can transform human health here on Earth, the importance of gender in space exploration, and much more.

www.linktr.ee/Interplanetary
Hosts: Matt Russell

Music: Matt Russell / Iam7</description>

Matt welcomes Dr. Saralyn Mark, a world-renowned …

Matt welcomes Dr. Saralyn Mark, a world-renowned leader in women's health, space medicine, and innovation in gender-specific design. Dr. Mark is an endocrinologist, geriatrician, and former Senior Policy Advisor at the White House Office of Science and Technology Policy. She’s advised organizations such as NASA and the Department of Health and Human Services, and is the founder of iGIANT, a groundbreaking nonprofit accelerating gender-specific innovation across sectors, from health to space exploration. Dr. Mark is also the author of the fascinating book, Stellar Medicine: A Journey Through the Universe of Women’s Health, and today we’ll be exploring how insights from space can transform human health here on Earth, the importance of gender in space exploration, and much more.

www.linktr.ee/Interplanetary
Hosts: Matt Russell

Music: Matt Russell / Iam7

#318 - Dr. Saralyn Mark - Space Health

Putting The Ace Back Into Space.
Host Matthew Russell's critically acclaimed fun and factual show about all things SPACE. 
New episode every week with a deep dive into the latest hot space topics.  
With regular Interviews and discussions with the worlds top space experts.
From how rockets fly to how blackholes work and everything in-between.

Interplanetary Podcast

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