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The Bedtime Scientist

The Bedtime Scientist

By: Josh Fleishman
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About this listen

Ranked the #1 Educational Podcast for Kids globally, The Bedtime Scientist is the ultimate nightly routine for busy, anxious minds. I help kids (and adults!) drift off to sleep by exploring the wonders of the universe...from the bottom of the ocean to the edges of space. Designed to be low-stimulation and sensory-friendly, this show is the antidote to chaotic screen time. ✨ What makes us different: Real Science: No fairy tales, just the fascinating truth about our world. 100% Human: No AI, no robots, and no jarring sound effects. Pure Calm: Just one soothing voice guiding you into a peacefJosh Fleishman
Episodes
  • Crystals: The Physics of Stillness | Calm Bedtime Science for Kids and Adults
    Feb 12 2026

    If The Bedtime Scientist is essential to your nightly routine, please consider supporting the show at BedtimeScientist.com.

    Have you ever wondered why a crystal feels so cool and smooth in your hand? It's because deep underground, chaos has turned into perfect order.

    Tonight, on The Bedtime Scientist, we explore the physics of stillness. We journey into the atomic lattice—a structure where tiny atoms make a brave decision to lock together in a pattern that repeats for millions of years. From the quartz in a watch to the salt on your table, we discover that true strength comes from finding your place and staying still.

    This isn't just a story about rocks; it is a lesson in stability. We visualize how the Earth cools from restless magma into solid geometry, helping us understand that even the busiest energy can settle into a beautiful, quiet form.

    In this episode, we cover:

    • The Magma Choice: How heat transforms into solid structure through patience and time. What makes atoms decide to stop moving and start building together.
    • The Lattice: Understanding nature's most organized grid. Why each atom knows exactly where it belongs. How one wrong placement breaks the entire pattern.
    • Ice is a Crystal: Why water expands when it freezes—and how that protects all life below the surface. The geometry of snowflakes and why every one has six points.
    • The Wonder of Order: From silicon in your phone to quartz in your watch, crystals run the modern world. How perfect atomic arrangement creates perfect predictability.
    • Time Itself: How quartz crystals vibrate 32,768 times per second to keep the world running on schedule. The heartbeat of civilization.
    • Visualization: How to imagine your own thoughts slowing down like cooling atoms as you drift to sleep. A meditation on settling into stillness.

    What makes this episode special:

    As you listen, your brain is literally doing what we're describing. Your neurons are slowing. Your electrical signals are becoming rhythmic. Your patterns are settling. Your nervous system is choosing rest. You're not just learning about crystals—you're becoming one, settling into stillness while we speak.

    This is the magic of The Bedtime Scientist: the science becomes the experience.

    A personal note from Josh:

    "I collected crystals as a kid. My grandmother believed they had healing powers. She kept a piece of purple amethyst on her shelf and told me it helped her dream. As The Bedtime Scientist, I see the math now. But I've come to understand that she was right too. The magic is real. Tonight, I want to show you that the math IS the magic."

    Perfect for:

    • Kids who ask "why?" at bedtime instead of sleeping
    • Parents in the trenches of nightly bedtime battles
    • Anyone with racing thoughts who can't settle down
    • Children with anxiety or sensory sensitivities
    • Neurodivergent kids who need structure and predictability in calming audio
    • Listeners seeking screen-free, science-based sleep support
    • Families building better sleep routines and nervous system regulation
    • Teachers using podcasts for classroom calm-down time
    • Anyone who loves the intersection of science, wonder, and peace

    What listeners are saying:

    "My child fell asleep listening and now asks for it every night.""Finally, a podcast that respects my kid's intelligence while actually helping them rest.""The Bedtime Scientist changed our entire bedtime routine."

    Listen now to turn the chaos of the day into the order of the night. Discover why atoms and humans aren't so different—we all need a place to belong, a pattern to follow, and permission to be still.

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    13 mins
  • Sleep: The Nightly Tide | Calm Bedtime Science for Kids & Families
    Feb 7 2026

    Our Sleepiest Episode Yet...

    If your child doesn't want to go to sleep, let me explain why they must...

    Sleep does not start all at once.

    It begins quietly, in ways your body already understands.

    In this calming bedtime science episode, we explore the invisible, busy, and beautiful work your body does while you rest. From the gentle buildup of adenosine (sleep pressure) during the day to the brain’s nighttime work of cleaning, sorting memories, and preparing for dreams, this episode explains the science of falling asleep in a slow, soothing way.

    Tonight, listeners will learn about:

    • The Hourglass: Why you feel "heavy" at night due to the buildup of sleep pressure.

    • The Nightly Tide: How the glymphatic system washes the brain clean while you dream.

    • The Library: How your brain moves memories from the temporary vault (hippocampus) to permanent storage (cortex).

    • The Cycles: The natural rhythm of sleep, from light drifting to deep repair and dreams.

    Designed for kids, families, and adults, this episode blends real neuroscience with a peaceful rhythm that helps listeners relax and drift toward sleep without effort. It is perfect for bedtime listening, quiet evenings, and winding down after a long day.

    🧪 Science Glossary for this Episode:

    • Adenosine: The chemical signal that builds up while you are awake to tell your body it is time to rest.

    • Sleep Spindles: Tiny bursts of brain activity that act like "shields," blocking out noise so you stay asleep.

    • Circadian Rhythm: The internal clock that uses light to set your body's schedule.

    There is nothing to do.Nothing to solve.Sleep is already beginning.

    Connect with The Bedtime Scientist:For more episodes, full scripts, and our companion book series, visit bedtimescientist.com.

    Keywords:Bedtime stories for kids, neuroscience, sleep science, kids meditation, calming, STEM, biology, human body, routine, parenting, education, gentle parenting, drift off, insomnia relief

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    13 mins
  • Artemis II: Journey to The Moon & Back | Calm Bedtime Science for Kids & Families
    Feb 3 2026

    Tonight, we lift our gaze way up.Join host Josh Fleishman for a quiet, awe-inspiring journey to the launchpad as we explore Artemis II—the historic NASA mission carrying humans back to the Moon for the first time in over 50 years.No loud sound effects. No fictional drama. Just the steady wonder of physics, engineering, and the human spirit.

    WHAT YOUR CHILD WILL LEARN:→ The Breathing Rocket: Why does the SLS look like it's puffing white clouds before launch? We explain cryogenic liquid hydrogen and oxygen, chilled to hundreds of degrees below zero.→ The Secret of the Orange Foam: Why is the SLS deep, burnt orange instead of white? We uncover the chemistry behind this color change and the engineering decision to leave it unpainted to save hundreds of pounds.→ The Lunar Slingshot: How do astronauts get home from the Moon when fuel is running low? We explain the "free-return trajectory"—where the Moon's gravity gently swings them back to Earth.→ Earthrise: We visualize seeing our blue planet float above the lunar horizon from 230,000 miles away—a view that changes how humans think about our shared home.

    WHY THE BEDTIME SCIENTIST WORKS:Most kids' podcasts use stories and excitement to engage. We believe the real world is fascinating enough. By delivering factual, non-fiction topics in a calm, low-register tone, we help children ground themselves in reality. This prepares busy minds for deep sleep—switching from active beta waves to relaxed alpha waves.

    PERFECT FOR:• Kids who ask "Why?" before bed• Young fans of NASA and space exploration• Parents seeking screen-free, calming bedtime routines• Classroom quiet time or sensory breaks• Children with anxiety or racing thoughts at bedtime• Neurodivergent kids who need predictable, structured audio content• Teachers using podcasts for STEM education and mindfulnessFEATURED:Mission: NASA's Artemis II (Launch: 2026)Crew: Reid Wiseman, Victor Glover, Christina Koch, Jeremy HansenConcepts: Gravity assists, atmospheric reentry, cryogenic fuel, free-return trajectory, lunar orbit, space physics

    ABOUT THE BEDTIME SCIENTIST:The Bedtime Scientist is a sleep-focused educational podcast that explains how the universe works to calm you down. Created for kids who love science but struggle with overstimulation, The Bedtime Scientist delivers real, fact-based science—not stories or fairy tales—in a voice designed for rest.From ocean exploration to lunar missions, we dive deep into how the world actually works. Every episode is carefully paced, sensory-friendly, and designed to help busy minds transition from active thinking to deep sleep.

    The show has reached #1 trending on Yoto Kids Audio Platform, #15 all-time, #1 in both education and bedtime categories, listened to across 77 countries by over 20,000+ weekly listeners. Parents consistently report: "My child falls asleep faster," "They ask better questions about science," "This is the best parenting tool we've found."Perfect for bedtime routines, classroom calm-down time, or anytime a child needs to ground themselves in wonder instead of worry.

    SUPPORT THE SHOW:If The Bedtime Scientist is essential to your nightly routine, please consider supporting us at BedtimeScientist.com. Your support keeps us ad-free and helps us create more episodes for families worldwide.---Keywords: kids podcast, bedtime stories for kids, science podcast for kids, space, NASA, Artemis II, Moon mission, SLS rocket, astronomy, STEM education, sleep aid for kids, anxiety relief children, educational podcast, non-fiction, physics, engineering, astronauts, calming podcast for sleep, sensory-friendly content, screen-free parenting, parenting tools, kids audio, educational content, space exploration, rocket launch, lunar landing, sleep routine, children's education

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    13 mins
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