Rephonic
Artwork for Valley of Depth
Space Industry
Spacex
NASA
BWXT
Nuclear Thermal Propulsion
Reusable Rockets
Satellite Manufacturing
Space Economy
Space Development Agency
Aerospacelab
Space Stations
Payload
Aerospace and Defense
Space Tourism
Private Investment
Satellite Buses
Apex
Government Contracts
DARPA
Artificial Gravity

Valley of Depth is a podcast about the technologies that matter — and the people building them. Brought to you by Arkaea Media, the team behind Payload (space), Ignition (nuclear energy), and Tectonic (defense tech), this show goes beyond headlines and hype. We talk to founders, investors, government officials, and military leaders shaping the future of national security and deep tech. From breakt... more

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Artwork for Valley of Depth

Latest Episodes

Scott Sanders has seen the defense tech industry from just about every angle. As a Marine officer, he watched promising capability stall somewhere between a program office and the field. As an early employee at Anduril, he helped build one of the com... more

YouTube

In this episode of Valley of Depth, we sit down with Mark Boggett, CEO of Seraphim Space, to break down one of the biggest questions in the industry right now: are we still early in the space economy, or has the easy money already been made?

Mark ha... more

YouTube

In this episode of Valley of Depth, we dive into Aalyria’s newly announced $100 million raise at a $1.3 billion valuation with cofounder and CTO Brian Barritt and unpack why investors are betting big on the future of networks that don’t sit still.

A... more

YouTube

In this episode of Valley of Depth, we sit down with David Tearse, co-founder and CEO of Karman Industries, to explore a piece of the AI boom that rarely gets attention: thermal infrastructure.

As hyperscale data centers grow into multi-gigawatt “AI... more

YouTube

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Recent Guests

Mark Boggett
CEO of Seraphim Space, early dedicated investor in space economy
Seraphim Space
Episode: The Early Innings, with Mark Boggett (CEO of Seraphim)
Brian Barritt
Co-founder and CTO of Aalyria
Aalyria Technologies
Episode: Networks in Motion, with Brian Barritt (CTO of Aalyria)
Jack Kuhr
Research Director at Payload Pro
Payload Pro
Episode: SpaceX Road to IPO, with Jack Kuhr (Research Director of Payload Pro)
John Serafini
CEO of Hawkeye 360
Hawkeye 360
Episode: Future of Signal Intelligence (LIVE @ NYSE), with John Serafini (CEO of Hawkeye 360)
Philip Johnston
CEO of Starcloud
Starcloud
Episode: Data Center Debate, with Philip Johnston (CEO of Starcloud)
Hamdullah Mohib
CEO of Orbitworks and former Afghan ambassador to the US and national security advisor.
Orbitworks
Episode: Sovereignty in Orbit, with Hamdullah Mohib (CEO of Orbitworks)
Marc Berte
CEO of Overview Energy, focused on space-based solar power technologies.
Overview Energy
Episode: Grid From Above, with Marc Berte (CEO of Overview Energy)
Halen Mattison
Co-founder and CEO of General Galactic; previously worked on propulsion and life support systems at SpaceX.
General Galactic
Episode: Railroad to Mars, with Halen Mattison (CEO of General Galactic)
Austin Link
Co-founder of Starfish Space, working on autonomous satellite technology.
Starfish Space
Episode: Rendezvous Economics, with Austin Link (Co-Founder of Starfish Space)

Host

Mo Islam
Host of Valley of Depth

Reviews

4.8 out of 5 stars from 150 ratings
  • The go-to podcast for space founders and VCs

    I discovered this podcast two weeks before I was preparing to moderate a panel on New Space for a deep tech conference and it was exactly what I needed to get up to speed on the opportunities and challenges of space commercialization. Mo finds just the right balance in unpacking both technology and business implications, and it’s a master class in the key metrics, terminology and “bleeding head” problems in the various sectors.

    Apple Podcasts
    5
    renitakalhorn
    United States10 months ago
  • Engaging Conversation

    Just finished listening to Mo’s latest podcast with Jane Poynter and Tabor MacCallum from Space Perspective. It gave me goosebumps with the prospect of any one of us going to space, including me, and what that would do for modern civilization.

    These two interviewees are remarkable humans - check out their past with Biosphere 2, Paragon Space Development, and StratEx. And hats off to the interviewer, Mo, for bringing all this to our attention in a fascinating interview.

    Apple Podcasts
    5
    Houston, we have an answer
    United States3 years ago
  • Love pathfinder

    Love the host and all the interesting guests…

    Apple Podcasts
    5
    AGB FOR REAL
    United States3 years ago
  • Current trends and valuable space insights

    I love hearing all the tips and latest trends from the guests who are active in the space industry. This is a great way to stay current on all the exciting space activities!

    Apple Podcasts
    5
    Sponz
    United States3 years ago
  • Educational - awesome - on point

    This is one of the most educational podcast I listen to on a monthly basis. Ari and the team at payload ensure we are an educated space community though thoughtful engagement and digestible podcasts! Thank you all! 🙏🏻😎🛰️

    Apple Podcasts
    5
    fvargas22012
    United States3 years ago

Listeners Say

Key themes from listener reviews, highlighting what works and what could be improved about the show.

Listeners praise interview quality and accessibility of complex topics.
Guests bring deep expertise in space and defense tech.
Balanced coverage of technology and business implications.
Positive feedback on timely, high-signal episodes.

Chart Rankings

How this podcast ranks in the Apple Podcasts, Spotify and YouTube charts.

Talking Points

Recent interactions between the hosts and their guests.

The Early Innings, with Mark Boggett (CEO of Seraphim)
Q: You've built a three-part Seraphim business (accelerator, venture funds, public fund). How do these parts interact to support a portfolio company through different growth stages?
The accelerator feeds early-stage companies, often from universities or corporate spin-outs, and primes them for fundraising by shaping boards, governance, and advisory networks. The venture funds then back these companies as they scale, sometimes continuing investments outside the accelerator, while the public fund provides a broader market mechanism that can amplify capital, liquidity, and visibility, all while maintaining a global, diversified exposure.
Thermal Breakthrough, with David Tearse (CEO of Karman Industries)
Q: What do you think people underestimate about thermal management?
Many see heat as just something to remove inefficiently, missing the massive potential for efficiency improvements in how we manage thermal applications.
Thermal Breakthrough, with David Tearse (CEO of Karman Industries)
Q: What moment do you think we're living through right now?
We're in a period of great technical innovations, but now there are fundamental changes with significant potential, especially due to advancements in AI.
Future of Signal Intelligence (LIVE @ NYSE), with John Serafini (CEO of Hawkeye 360)
Q: What is your general philosophy around buy versus build?
Hawkeye maintains a philosophy of in-house integration, designing and building their own spacecraft and payloads, which allows control over quality, timeliness, and cost.
Future of Signal Intelligence (LIVE @ NYSE), with John Serafini (CEO of Hawkeye 360)
Q: Can you give some examples of illegal activity that you've tracked?
A notable example includes the Chinese National Fishing Fleet illegally fishing in the EEZ of the Galapagos, where Hawkeye detected their signal emissions despite them turning off their AIS to go dark.

Audience Metrics

Listeners, social reach, demographics and more for this podcast.

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Frequently Asked Questions About Valley of Depth

What is Valley of Depth about and what kind of topics does it cover?

A technology-forward show focused on the people and processes behind national security, space, and deep tech. Recent episodes center on space infrastructure, aerospace innovations, data centers, and defense tech, with guests ranging from founders and CTOs to CEOs and national security experts. The conversations often unpack business models, regulatory landscapes, and global strategy, offering practical takeaways for executives, investors, and policy professionals. A standout strength is its ability to pair enterprise-scale tech topics with real-world applications and geopolitical context, making it valuable for listeners who want actionable insights and a clear view of where frontier technologies are headed.

Where can I find podcast stats for Valley of Depth?

Rephonic provides a wide range of podcast stats for Valley of Depth. We scanned the web and collated all of the information that we could find in our comprehensive podcast database. See how many people listen to Valley of Depth and access YouTube viewership numbers, download stats, audience demographics, chart rankings, ratings, reviews and more.

How many listeners does Valley of Depth get?

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How many subscribers and views does Valley of Depth have?

To see how many followers or subscribers Valley of Depth has on Spotify and other platforms such as Castbox and Podcast Addict, simply upgrade your account. You'll also find viewership figures for their YouTube channel if they have one.

Which podcasts are similar to Valley of Depth?

These podcasts share a similar audience with Valley of Depth:

1. Main Engine Cut Off
2. TBPN
3. The a16z Show
4. Dwarkesh Podcast
5. Sourcery

How many episodes of Valley of Depth are there?

Valley of Depth launched 4 years ago and published 164 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.

How do I contact Valley of Depth?

Our systems regularly scour the web to find email addresses and social media links for this podcast. We scanned the web and collated all of the contact information that we could find in our podcast database. But in the unlikely event that you can't find what you're looking for, our concierge service lets you request our research team to source better contacts for you.

Where can I see ratings and reviews for Valley of Depth?

Rephonic pulls ratings and reviews for Valley of Depth from multiple sources, including Spotify, Apple Podcasts, Castbox, and Podcast Addict.

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What guests have appeared on Valley of Depth?

Recent guests on Valley of Depth include:

1. Mark Boggett
2. Brian Barritt
3. Jack Kuhr
4. John Serafini
5. Philip Johnston
6. Hamdullah Mohib
7. Marc Berte
8. Halen Mattison

To view more recent guests and their details, simply upgrade your Rephonic account. You'll also get access to a typical guest profile to help you decide if the show is worth pitching.

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