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Two Feet In: The Woman Who Applied for a One-Way Ticket to Mars

Author
Danielle Colley
Published
Wed 27 Aug 2025
Episode Link
None

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What would you do if offered the adventure of a lifetime - knowing you could never come home again?

Dr. Dianne McGrath said yes. Out of 200,000 applicants worldwide, she made it to the final 100 candidates for Mars One - a one-way mission to colonize Mars. For eight years, Dianne prepared to leave Earth forever, knowing she'd never see her family again.

This is the story of what happens when you stop asking "Am I qualified?" and start asking "What am I capable of?" 

Despite having no astrophysics background, Dianne refused to disqualify herself from humanity's next giant leap. She biohacked her way to incredible bone density, had difficult conversations with family about never coming home, and built mental resilience for the isolation of space.

This conversation explores the psychology of extreme goals, the power of calculated risk-taking, and how the hardest challenges bring out our best selves. Dianne's warmth and wisdom will challenge everything you think you know about limits and what's truly possible when you commit with "two feet in."


Connect with Dr. Dianne McGrath - 

On The Website

On Her Instagram

On her LinkedIn

Because sometimes the biggest risk isn't taking the leap - it's never finding out what we're truly capable of.

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What's your Mars? Drop us a message about the big dream you've been telling yourself you're not ready for.


Connect with Danielle via her website here.

Follow her Instagram here.

Listen to her audio book, The Chocolate Bar Life on Spotify


About this episode - 

00:00 Introduction and Setting the Stage

00:40 Meet Dr. Dianne McGrath: Mars One Candidate

01:41 The Mars One Journey Begins

02:07 Dianne's Determination and Mindset

03:42 The Mars One Application Process

06:31 Training and Preparation for Mars

13:53 Public and Personal Reactions

22:50 Health and Fitness Challenges

35:37 Reflecting on Generational Differences

36:40 Preparing for a One-Way Trip to Mars

38:13 Mental Health and Astronaut Challenges

39:43 Conversations About Death and Loss

44:09 The End of the Mars One Dream

55:46 Finding New Challenges and Adventures

01:03:53 Embracing New Opportunities

01:06:08 Final Thoughts and Reflections

 

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