Sandman Science

Sandman Science
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Sandman Science is a place to fall asleep to the wonders of the universe. Every episode is a slow, gentle journey: a descent into the deep ocean, a drift through the solar system, a quiet walk through the natural world, narrated in a calm, unhurried voice over soft original music. No loud intros, no jarring cuts, no sudden sounds. Just long, wandering stories about real science, told slowly enough to let you drift off. Put it on, close your eyes, and let your mind wander out into the dark and quiet. Music and scripts are original to Sandman Science. Narration is an AI voice.

  1. 3d ago

    A Journey to the Centre of the Earth, Slowly Explained for Sleep

    Tonight, sink slowly down through the Earth: the soil and the bedrock, the deepest cave and the deepest mine, two-billion-year-old water, the Kola Superdeep Borehole, the Moho, the solid rock of the mantle that flows like honey, the birthplace of diamonds, an ocean's worth of water locked in blue crystal, the two great blobs at the bottom of the mantle, Inge Lehmann's hidden inner core, the sea of liquid iron that makes our magnetic field, and the iron heart as hot as the Sun's surface, to float weightless at the very centre, before rising home to the quiet ground under the stars. Narrated slowly over soft music, to help you fall asleep. Dim the lights, lower the volume, and let yourself drift. Chapters0:00 Where We Begin1:37 The Ground Beneath You2:57 How We Once Imagined It4:08 The Garden Worms5:33 The Bedrock6:50 The Warmth Below8:05 The Deepest Cave9:12 The Deepest Mine10:24 The Microbe That Carries Everything11:59 The Oldest Water13:17 The Deepest Hole14:17 What the Hole Found15:43 Weighing the World17:06 Two Kinds of Crust18:39 Light From the Earthquakes20:04 The Moho21:33 Walking on the Mantle22:57 The Green Stone24:19 Rock That Flows25:29 The Land Still Rising26:46 The Slow Wheel28:04 The Map of the Ocean Floor29:27 Where Diamonds Are Born30:47 The Diamond Road32:18 The Blue Crystal33:40 An Ocean in the Stone35:02 The Islands of Hawaii36:45 The Sinking Sea Floors38:07 The Two Great Blobs39:36 A Lost World Inside?41:06 The Bottom of the Mantle42:30 The First Glimpse of the Core43:55 Inge Lehmann45:20 The Core Within the Core46:21 A Sea of Liquid Iron47:56 The Planet's Own Magnet49:24 The Memory in the Lava51:05 As Hot as the Sun52:13 The Iron Heart53:28 The Turning Heart54:44 The Innermost Core55:58 The Weight of the World57:03 Weightless at the Centre58:13 The Long Fall59:37 The Way Back Up1:01:05 The Ground Under the Stars1:02:32 Rest1:04:40 Ambient Tail (Music Only) About Sandman ScienceSlow, gentle journeys through the universe and the natural world, narrated calmly over soft original music, made for falling asleep and quiet minds. New journeys added regularly.Watch the video version on YouTube: https://youtu.be/bjXzJZrnBAk Support the channelIf these slow journeys help you sleep, you can buy us a coffee: https://buymeacoffee.com/sandmanscience Best experienced at a low volume, as you fall asleep. Sources for the science in this episode: the science here follows published, widely reported work: Halley's hollow Earth (1692), Veryovkina Cave (2018 survey), Mponeng mine and Desulforudis audaxviator (Chivian et al. 2008), Kidd Creek ancient water (Warr et al. 2018), the Kola Superdeep Borehole (1970 to 1989, 12,262 m), Cavendish's weighing of the Earth (1798), Mohorovičić (1909), Gros Morne's Tablelands, olivine and ringwoodite (Pearson et al. 2014), post-glacial rebound on Sweden's High Coast, mantle convection and plate tectonics, kimberlites and diamonds, mantle plumes and Hawaii, the large low-shear-velocity provinces and the Theia idea (Yuan et al. 2023), Oldham (1906) and Gutenberg (1914), Inge Lehmann (1936), the geodynamo, Gilbert's De Magnete (1600), Ross at the north magnetic pole (1831), the Brunhes and Matuyama reversals, inner-core rotation studies (Song and Richards 1996; Yang and Song 2023; Wang and Vidale 2024), the innermost inner core (Ishii and Dziewonski 2002; Phạm and Tkalčić 2023), and the gravity-tunnel thought experiment. Speculative ideas are presented as ideas. These videos are for relaxation and sleep. They are not medical advice or a treatment for insomnia or any health condition. Music and scripts are original to Sandman Science. Narration is an AI voice.

  2. 5d ago

    Falling Into Jupiter, Slowly Explained for Sleep

    Tonight, fall slowly into the largest planet: past the four great moons and the faint ring, through the bands and the Great Red Spot, the blue poles, the ammonia, middle and water clouds, following the Galileo probe's last hour, down into a world with no surface, where the sky becomes a sea, helium may fall as rain and hydrogen turns to liquid metal, all the way to the blurred heart at the centre, before rising home to see Jupiter again as a bright, steady light in the evening sky. Narrated slowly over soft music, to help you fall asleep. Dim the lights, lower the volume, and let yourself drift. Chapters0:00 Where We Begin1:39 The Long Way Out2:57 The Size of It4:04 A Day of Ten Hours5:11 The Visitors Before Us6:24 Four Moons Passing7:50 Shadows on the Clouds9:09 The Little Inner Moons10:25 The Faint Ring11:44 The Invisible Bubble13:07 The Radiation Belts14:32 Lights at the Poles15:58 The Great Cold Spot17:04 The Bands18:27 Rivers of Wind19:39 The Colours21:04 The Ammonia Clouds22:15 The Belt That Disappears23:36 The Great Red Spot25:09 How Long It Has Turned26:31 The Roots of the Storm27:52 Red Spot Junior29:14 The String of Pearls30:29 The Blue Poles31:53 Lightning in the High North33:13 The Middle Clouds34:18 The Water Clouds35:39 The Probe That Fell36:45 Fifty-Eight Minutes38:30 The Warm Deep39:58 There Is No Surface41:02 The Sea of Hydrogen42:28 Helium Rain44:14 Metallic Hydrogen45:41 The Magnetic Heart47:04 The Blurred Seed48:21 The Centre49:52 The Glow From Within51:15 Not Quite a Star52:42 The First Planet54:03 The Wandering Giant55:24 The Sun's Gentle Sway56:24 The Shepherd of the Asteroids57:56 The Comet That Broke59:35 Rising Back Up1:01:01 A Steady Light1:02:30 Rest1:04:16 Ambient Tail (Music Only) About Sandman ScienceSlow, gentle journeys through the universe and the natural world, narrated calmly over soft original music, made for falling asleep and quiet minds. New journeys added regularly.Watch the video version on YouTube: https://youtu.be/JU23UpL6TU8 Support the channelIf these slow journeys help you sleep, you can buy us a coffee: https://buymeacoffee.com/sandmanscience Best experienced at a low volume, as you fall asleep. Sources for the science in this episode: the science here follows published, widely reported work: NASA/JPL mission results from Pioneer, Voyager, Galileo (including the 1995 Galileo probe), Cassini, New Horizons and Juno (Bolton et al.; the Red Spot's depth, the polar cyclones, shallow lightning, the dilute core), Ole Rømer's 1676 timing of Io, Cassini's 1665 spot and the long Red Spot record (including Sánchez-Lavega et al. 2024), the Great Cold Spot (Stallard et al. 2017), H3+ auroras, helium rain models (Stevenson and Salpeter; Wilson and Militzer), metallic hydrogen (Wigner and Huntington 1935), Jupiter's internal heat, the early formation of Jupiter from meteorite isotopes (Kruijer et al. 2017), the Grand Tack (Walsh et al. 2011), the Kirkwood gaps, and Comet Shoemaker-Levy 9 (1994). Speculative ideas are presented as ideas. These videos are for relaxation and sleep. They are not medical advice or a treatment for insomnia or any health condition. Music and scripts are original to Sandman Science. Narration is an AI voice.

  3. Oct 29

    The Smallest Things in the Universe, Slowly Explained for Sleep

    Tonight, drift slowly inward to the smallest things there are: a grain of sand, a speck of dust holding more atoms than our galaxy has stars, pollen and spider silk, the smallest insect and the smallest flower, glass-shelled diatoms, the tiniest living cells, the first photograph of a molecule and of a single atom, the empty space inside every atom, the quarks that are never alone, the Higgs, and the smallest distance that has any meaning at all, before turning back to find that the smallest things built the largest. Narrated slowly over soft music, to help you fall asleep. Dim the lights, lower the volume, and let yourself drift. Chapters0:00 Where We Begin1:42 A Grain of Sand3:06 More Atoms Than Stars4:02 The Edge of Seeing5:26 The First Look7:04 The Grain That Remembers8:44 A Thread of Silk10:09 A Droplet of Cloud11:18 The Smallest Insect12:21 The Smallest Flower13:54 A Teaspoon of the Sea15:15 Houses of Glass17:03 The Most Common Living Thing18:25 The Smallest Living Cells19:46 Too Small for Light21:08 The Viruses22:39 A Grain of Salt24:01 Molecules25:14 The Dance in the Pollen26:48 The First Photograph of a Molecule28:05 Writing With Atoms29:24 How Small an Atom Is30:36 A Photograph of One Atom32:05 The Empty Atom33:42 You Never Quite Touch Anything34:39 Clouds of Electrons36:07 Why Gold Is Golden37:29 The Oldest Thing in the Glass38:44 Inside the Nucleus39:48 All of Us in a Sugar Cube40:52 The Strongest Force42:19 Three Quarks43:44 A Quark Is Never Alone44:43 Where Weight Comes From45:56 The Electron47:10 The Lightest Things48:19 A Cubic Kilometre of Ice49:48 How Things Have Weight51:12 Empty Space Is Never Empty52:33 The Smallest Distance54:00 The Ideas at the Bottom55:19 The Middle of Everything56:38 The Smallest Things Made the Largest58:07 The Sun Depends on the Smallest Things59:51 Everything You Are1:01:20 Small and Still1:02:48 Rest1:04:30 Ambient Tail (Music Only) About Sandman ScienceSlow, gentle journeys through the universe and the natural world, narrated calmly over soft original music, made for falling asleep and quiet minds. New journeys added regularly.Watch the video version on YouTube: https://youtu.be/YfbTYSO5CZ0 Support the channelIf these slow journeys help you sleep, you can buy us a coffee: https://buymeacoffee.com/sandmanscience Best experienced at a low volume, as you fall asleep. Sources for the science in this episode: the science here follows published, widely reported work: Leeuwenhoek's letters to the Royal Society, pollen and palynology, spider silk (Darwin's bark spider, Agnarsson et al. 2010), fairyflies (Kikiki huna, Huber and Noyes 2013), Wolffia, marine microbes and Prochlorococcus (Chisholm et al.), diatoms and Bodélé dust (Koren et al. 2006), Mycoplasma, Abbe's diffraction limit, Ruska and Knoll's electron microscope, the mimivirus (La Scola et al. 2003), Brownian motion (Brown, Einstein, Perrin), the first image of a molecule's bonds (Gross et al. 2009), IBM's xenon atoms (Eigler and Schweizer 1989), single-atom photographs (Griffith University 2012, Nadlinger 2018), Rutherford's nucleus, relativistic gold, quarks (Gell-Mann, Zweig, SLAC), the proton's mass from lattice QCD, the electron's roundness (ACME), neutrino mass (KATRIN 2022), IceCube and TXS 0506+056, the Higgs boson (CERN 2012), the Casimir effect (Lamoreaux 1997), the Planck length, inflation and the origin of galaxies, and quantum tunnelling in the Sun. Speculative ideas are presented as ideas. These videos are for relaxation and sleep. They are not medical advice or a treatment for insomnia or any health condition. Music and scripts are original to Sandman Science. Narration is an AI voice.

    The Smallest Things in the Universe, Slowly Explained for Sleep

  4. Oct 27

    The Loneliest Places in the Universe, Slowly Explained for Sleep

    Tonight, drift slowly outward to the loneliest places there are: Point Nemo and the spacecraft resting beneath it, Rockall, Tristan da Cunha and the Islands of Desolation, the last lighthouse keepers, the loneliest tree, a winter in the dark at Concordia, Michael Collins alone behind the Moon, the Pale Blue Dot, Sedna on its 11,000 year orbit, the stars between the galaxies, a galaxy with no neighbours, the coldest place in the universe and the most distant single star ever seen, before coming home to the quiet secret that we are not so alone after all. Narrated slowly over soft music, to help you fall asleep. Dim the lights, lower the volume, and let yourself drift. Chapters0:00 Where We Begin1:34 The Loneliest Spot in the Ocean3:12 Where Old Spacecraft Rest4:37 Rockall5:57 The Island at the End of the World7:27 The Island of Desolation8:59 The Last Lighthouse Keepers10:18 The Island Nobody Lives On11:59 The Loneliest Tree13:27 The Tree in the Desert15:02 The Pole Nobody Reaches16:35 A Winter in the Dark18:07 The Quietest Valley19:39 The Darkest Sky on Earth21:01 Alone Behind the Moon22:26 The Last Footprints23:52 The Quietest Place in the Solar System25:22 Alone at L226:43 A Rover Sings to Itself28:16 The Pale Blue Dot29:35 Three Dishes Listening31:06 The Last Signal32:34 The Comet That Will Not Return for Ages34:12 Sedna35:23 FarFarOut36:55 Arrokoth38:29 The Gap Between the Stars39:47 The Bubble We Live In41:10 Planets That Drift in Pairs42:41 The Solitary One44:10 The Magnificent Seven45:41 Stars at the Edge of the Galaxy47:07 Stars Between the Galaxies48:30 The Faintest Galaxies49:54 The Galaxy With No Neighbours51:17 Living at the Edge of the Void52:46 The Galaxy Lost in Space54:05 A Sky With No Stars55:43 The Coldest Place in the Universe57:10 A Single Star From the Dawn58:28 The Overview Effect59:48 Not Alone After All1:01:15 Rest1:03:11 Ambient Tail (Music Only) About Sandman ScienceSlow, gentle journeys through the universe and the natural world, narrated calmly over soft original music, made for falling asleep and quiet minds. New journeys added regularly.Watch the video version on YouTube: https://youtu.be/5zm-Y3RK1cY Support the channelIf these slow journeys help you sleep, you can buy us a coffee: https://buymeacoffee.com/sandmanscience Best experienced at a low volume, as you fall asleep. Sources for the science in this episode: the facts here follow published, widely reported work: Point Nemo (Lukatela 1992) and the South Pacific spacecraft cemetery (NASA, ESA, Roscosmos), Rockall, Tristan da Cunha, the Kerguelen Islands, Trinity House and Northern Lighthouse Board histories, Bouvet Island and its 1964 lifeboat, the Campbell Island spruce (Turney et al. 2018), the Tree of Ténéré, the Southern Pole of Inaccessibility, Concordia Station (ESA, IPEV, PNRA), the National Radio Quiet Zone and Green Bank Observatory, NamibRand Nature Reserve (IDA), Apollo 11 and Michael Collins' Carrying the Fire, Apollo 17, the Moon's far side (Chang'e 4), JWST at L2, Curiosity, Voyager 1's Pale Blue Dot (NASA/JPL), the Deep Space Network, Sedna, FarFarOut and Arrokoth (New Horizons), the Local Bubble (Zucker et al. 2022), JuMBOs in Orion, Fomalhaut, the Magnificent Seven neutron stars, halo and intracluster stars, ultra-faint dwarf galaxies, MCG+01-02-015 (Hubble), the Local Void, NGC 6503, the Boomerang Nebula, Earendel (Welch et al. 2022), and the overview effect. Speculative ideas are presented as ideas. These videos are for relaxation and sleep. They are not medical advice or a treatment for insomnia or any health condition. Music and scripts are original to Sandman Science. Narration is an AI voice.

    The Loneliest Places in the Universe, Slowly Explained for Sleep

  5. Oct 23

    The Far Future of the Universe, Slowly Explained for Sleep

    Tonight, drift slowly forward in time, all the way to the end: Halley's Comet returning, Vega becoming the North Star, the Big Dipper bending out of shape, the last total eclipse of the Sun, a supercontinent, the Sun swelling into a gentle red giant and fading to a white ember, the galaxies drifting out of sight, the patient red stars that will shine for trillions of years, the last star ever born, and the long, quiet stillness at the very end, before coming home to tonight, one of the brightest times there will ever be. Narrated slowly over soft music, to help you fall asleep. Dim the lights, lower the volume, and let yourself drift. Chapters0:00 Where We Begin1:50 The Sky Is Moving3:14 The Comet That Comes Back4:42 The New North Star5:55 The Changing Constellations7:14 The Wandering Poles8:51 The Falls That Walk Upstream10:12 The Voyagers' First Stars11:41 The Longer Days13:01 The Last Eclipse14:19 The Star That Will Pass By15:39 The Star That Will Shine by Day16:50 The Next Supercontinent18:20 The Brightening Sun19:44 The Life Below20:53 The Cloud in the Southern Sky22:17 A Galaxy Comes Closer23:56 Milkomeda25:25 The Sun Grows Large26:36 What Happens to the Planets28:03 The Helium Flash29:33 The Sun's Last Breath31:10 The White Dwarf Sun32:28 The Black Dwarf33:44 The Galaxies Drift Away35:07 The Island Universe36:25 The Fading Afterglow37:54 The Neighbourhood Becomes One39:09 The Galaxies Turn Red40:50 The Patient Red Stars42:27 The Blue Dwarfs43:55 The Last Star Is Born45:15 The Age of Embers46:23 A Rare New Light47:40 The Wandering Planets49:05 The Galaxy Comes Apart50:27 Do Protons Last Forever?52:04 Iron Stars53:40 The Age of Black Holes55:05 Three Possible Endings56:51 The Quietest Universe58:08 Does Time Still Pass?59:28 Thinking Slowly1:01:03 A New Beginning?1:02:35 Why Now Is Rare1:03:55 Rest1:05:56 Ambient Tail (Music Only) About Sandman ScienceSlow, gentle journeys through the universe and the natural world, narrated calmly over soft original music, made for falling asleep and quiet minds. New journeys added regularly.Watch the video version on YouTube: https://youtu.be/aS7BRaagLcQ Support the channelIf these slow journeys help you sleep, you can buy us a coffee: https://buymeacoffee.com/sandmanscience Best experienced at a low volume, as you fall asleep. Sources for the science in this episode: the science here follows published, widely reported work: precession and the pole stars, stellar motions (ESA Gaia), Niagara Falls erosion, Voyager trajectories (NASA/JPL), tidal slowing of the Earth's rotation, the Moon's recession and the end of total eclipses, Gliese 710's close approach, Betelgeuse's expected supernova, future supercontinents, the Sun's slow brightening and red giant phase, the deep biosphere, the Large Magellanic Cloud and Andromeda (Sawala et al. 2025), Milkomeda (Cox and Loeb), planetary nebulae and white dwarfs, black dwarfs, the accelerating universe and its future (Krauss and Scherrer), red and blue dwarfs and the five ages of the universe (Adams and Laughlin), rogue planets, proton decay limits (Super-Kamiokande), Freeman Dyson's Time Without End, the DESI dark energy results, and Roger Penrose's conformal cyclic cosmology. Speculative ideas are presented as ideas. These videos are for relaxation and sleep. They are not medical advice or a treatment for insomnia or any health condition. Music and scripts are original to Sandman Science. Narration is an AI voice.

    The Far Future of the Universe, Slowly Explained for Sleep

  6. Oct 21

    Falling Into a Black Hole, Slowly Explained for Sleep

    Tonight, fall slowly into a black hole: from the country vicar who imagined dark stars in 1783, the letter Schwarzschild sent from the front and the young Chandrasekhar working it out on a ship, out to the heart of our galaxy, where a star loops an invisible giant every sixteen years. Then down, gently, past the glowing disc, the ring where light travels in circles, the shadow and the slowing of time, across the edge and inside, and on to the far future, when even black holes fade. Narrated slowly over soft music, to help you fall asleep. Dim the lights, lower the volume, and let yourself drift. Chapters0:00 Where We Begin1:39 The Dark Star3:13 A Letter From the Front4:58 The Young Man on the Ship6:25 The Collapse Nobody Believed8:02 How a Black Hole Is Born9:47 The Name11:09 How Small They Are12:29 The First One Found14:08 The Hidden Partner15:50 A Hundred Million in the Dark17:28 Leaving Home19:06 The Heart of the Galaxy20:35 The Stars That Gave It Away22:00 The Quiet Eater23:21 Choosing Where to Fall24:52 The Glowing Disc26:22 The Jets28:02 The Brightest Lights in the Universe29:42 Light That Bends31:17 The Ring of Light32:46 The Shadow34:08 Time Slows Down35:43 The Last Safe Orbit37:27 The Spinning Ones38:58 The Dragging of Space40:36 The Star Drawn Into a Thread42:22 The Tides43:54 What a Friend Would See45:39 The Edge47:25 Inside49:02 The Centre50:56 Bridges and White Holes52:36 The Surface That Remembers54:17 The Faint Glow56:05 A Black Hole in a Laboratory57:37 The Smallest Black Holes59:12 When Black Holes Meet1:00:45 The Runaway1:02:19 The Black Hole Era1:03:55 Even Black Holes Fade1:05:15 Rest1:07:20 Ambient Tail (Music Only) About Sandman ScienceSlow, gentle journeys through the universe and the natural world, narrated calmly over soft original music, made for falling asleep and quiet minds. New journeys added regularly.Watch the video version on YouTube: https://youtu.be/027Zpa-KdLc Best experienced at a low volume, as you fall asleep. Sources for the science in this episode: the science here follows published, widely reported work: John Michell's dark stars (1783), Karl Schwarzschild's solution (1915-16), Subrahmanyan Chandrasekhar's limit (1930), Oppenheimer and Snyder (1939), John Wheeler, Cygnus X-1, Gaia BH1 and BH3 (ESA Gaia), the lone black hole OGLE-2011-BLG-0462 (Hubble), Sagittarius A star and the star S2 (Ghez, Genzel; Nobel Prize 2020), X-ray light echoes at the galactic centre, Messier 87's jet, quasar 3C 273 (Maarten Schmidt), the 1919 eclipse (Eddington), the photon sphere and black hole shadow (Event Horizon Telescope), gravitational time dilation and GPS, Roy Kerr's spinning black holes and Roger Penrose, Gravity Probe B, tidal disruption events (AT2019qiz), Jacob Bekenstein and Stephen Hawking, analogue black holes (Jeff Steinhauer, Technion), primordial black holes, GW231123 (LIGO, Virgo, KAGRA), the runaway black hole candidate (van Dokkum et al.) and the far future of the universe (Adams and Laughlin). Open questions are presented as open. These videos are for relaxation and sleep. They are not medical advice or a treatment for insomnia or any health condition. Music and scripts are original to Sandman Science. Narration is an AI voice.

    Falling Into a Black Hole, Slowly Explained for Sleep

  7. Oct 19

    The Wildest Weather in the Universe, Slowly Explained for Sleep

    Tonight, drift slowly outward through the wildest weather in the universe: the coldest place on Earth, diamond dust glittering in the air, a lake where lightning flashes almost every night, rain falling on the Sun, blue sunsets on Mars, hailstones made of ammonia on Jupiter, rain falling from Saturn's rings, raindrops like snowflakes on Titan, diamond rain deep inside Uranus and Neptune, the fastest winds in the solar system, clouds of rubies and sapphires and a planet where it snows sunscreen. Narrated slowly over soft music, to help you fall asleep, and ending where it began, with rain on the window. Dim the lights, lower the volume, and let yourself drift. Chapters0:00 Where We Begin1:51 The Coldest Place on Earth3:29 Diamond Dust4:51 The Hottest Ground on Earth6:18 The Lightning That Never Stops7:49 The Wettest Place on Earth9:26 The Strongest Wind on Earth10:53 Lightning Above the Clouds12:40 Clouds That Shine at Midnight14:15 The Morning Glory15:50 The Weather on the Sun17:34 The Night the Sky Turned Red19:04 The Wind Between the Planets20:39 The Planet With Almost No Weather22:09 The Winds of Venus23:35 A Glory on Venus24:59 Metal Frost on Venus26:26 The Blue Sunset27:49 The Storm That Covered a World29:34 The Dust Devils31:11 Snow on Mars32:40 The Cyclones at the Pole34:22 Hailstones Made of Ammonia35:51 The Biggest Auroras37:19 Io's Collapsing Sky38:58 The Great White Storm40:37 The Rain From the Rings42:18 Raindrops Like Snowflakes44:02 The Dust Storms of Titan45:31 The Sideways Seasons47:13 Diamond Rain48:38 The Fastest Winds50:02 The Dark Spot That Vanished51:35 The Year Neptune's Clouds Vanished53:05 Blue Skies Over Pluto54:44 Snow on Pluto's Mountains56:30 Clouds of Rubies and Sapphires58:05 The Planet Where It Snows Sunscreen59:40 The Planet That Heats Up in Hours1:01:11 Clouds of Sand1:02:35 A Weather Report From a Brown Dwarf1:04:03 The Galaxy That Breathes Out1:05:33 Rest1:07:43 Ambient Tail (Music Only) About Sandman ScienceSlow, gentle journeys through the universe and the natural world, narrated calmly over soft original music, made for falling asleep and quiet minds. New journeys added regularly.Watch the video version on YouTube: https://youtu.be/s2wgi3vW2bE Best experienced at a low volume, as you fall asleep. Sources for the science in this episode: the science here follows published, widely reported work: Vostok station and satellite surface temperatures in East Antarctica, diamond dust, the Lut Desert (MODIS land surface temperature), Catatumbo lightning (NASA LIS satellite data), Mawsynram rainfall, the Barrow Island gust (WMO), sprites and noctilucent clouds, the Morning Glory cloud, coronal rain, the Carrington Event, Ludwig Biermann and the solar wind, Mercury's sodium tail, Venus superrotation and the Venus Express glory, metal frost on Venus' mountains, Curiosity's blue sunset, the 2018 Mars dust storm and Opportunity, dust devils cleaning Spirit's panels, Martian snow (Phoenix and MRO), Juno at Jupiter's poles (cyclones, mushballs, auroras), Io's atmospheric collapse, Saturn's Great White Storm of 2010, ring rain (Cassini), Titan's rain and dust storms, Uranus' seasons, diamond rain (SLAC 2017), Neptune's winds and dark spots, Neptune's vanishing clouds (2019), Pluto's blue haze and methane snowcaps (New Horizons), WASP-121b, Kepler-13Ab (Hubble 2017), HD 80606 b, VHS 1256 b (JWST), Luhman 16 and the M82 superwind. Open questions are presented as open. These videos are for relaxation and sleep. They are not medical advice or a treatment for insomnia or any health condition. Music and scripts are original to Sandman Science. Narration is an AI voice.

    The Wildest Weather in the Universe, Slowly Explained for Sleep

  8. Oct 16

    The Strangest Sounds in the Universe, Slowly Explained for Sleep

    Tonight, drift slowly outward through the strangest sounds ever recorded: plants that click when they are thirsty, sand dunes that sing, a hum only some people can hear, a whale that sings in a key no other whale uses, the Bloop from the deep Pacific, the wind on Mars, the radio voices of Jupiter and Saturn, a black hole humming a B flat fifty-seven octaves down, and finally the sound of the beginning, still hissing in the static of an old television. Real recordings from NASA, NOAA and LIGO sit softly under the music, narrated slowly to help you fall asleep. Dim the lights, lower the volume, and let yourself drift. Chapters0:00 Where We Begin1:34 The Quietest Room3:10 Your Ears Are Singing4:49 The Plants That Click6:21 The Elephants' Secret Rumble7:55 The Seventeen-Year Chorus9:47 The Bats' Hidden World11:31 The Whispering Gallery12:56 The Pyramid That Chirps14:11 The Ghost in the Machine15:44 The Singing Sand17:19 The Hum Some People Hear18:51 Booms From a Clear Sky20:38 The Sound of the Northern Lights22:05 The Whistlers23:39 The Dawn Chorus of Space25:07 The Hum of the Earth26:38 The Laser Lake28:02 The Singing Ice29:35 The Seals Under the Ice31:19 The Crackling Reef32:44 The Song That Spreads34:17 The Loneliest Whale36:01 The Clicks in the Deep37:43 The Sound Highway39:17 The Bloop40:39 The Upsweep42:20 Into the Silence of Space44:04 The First Sounds From Another World45:29 The Wind on Mars47:01 The Ringing Sun48:30 The Starquakes50:15 The Singing Comet51:54 Jupiter's Radio Storms53:28 The Voice of Saturn55:01 The Golden Record56:40 The Hum Beyond the Sun58:17 The Ticking Stars1:00:08 The Black Hole That Sings1:01:48 The Chirp1:03:27 The Sound of the Beginning1:05:12 The Static on the Screen1:09:14 Ambient Tail (Music Only) About Sandman ScienceSlow, gentle journeys through the universe and the natural world, narrated calmly over soft original music, made for falling asleep and quiet minds. New journeys added regularly.Watch the video version on YouTube: https://youtu.be/F7QRh7XOls0 Best experienced at a low volume, as you fall asleep. Sources for the science in this episode: the science here follows published, widely reported work: John Cage and anechoic chambers, otoacoustic emissions (David Kemp), ultrasonic sounds from stressed plants (Tel Aviv University, Cell 2023), periodical cicadas, bat echolocation (Donald Griffin), elephant infrasound (Katy Payne), the St Paul's Whispering Gallery (Lord Rayleigh), the Chichén Itzá chirped echo, Vic Tandy's 19 Hz 'ghost', booming dunes, the Taos Hum, skyquakes and mistpouffers, auroral sounds (Aalto University), whistlers and chorus (Van Allen Probes), the Earth's hum, the Ross Ice Shelf song, Weddell seal song, snapping shrimp, humpback song transmission, the 52-hertz whale, sperm whale codas (Project CETI), the SOFAR channel, NOAA's Bloop, Upsweep and Julia, Venera 13 and 14, Perseverance's microphones, helioseismology (SOHO), Kepler asteroseismology, Rosetta at comet 67P, Jupiter's radio bursts, Cassini at Saturn, the Voyager Golden Record and interstellar plasma waves, pulsars (Jocelyn Bell Burnell), the Perseus cluster B flat (Chandra), GW150914 (LIGO), baryon acoustic oscillations and the cosmic microwave background (Penzias and Wilson). Open questions are presented as open. These videos are for relaxation and sleep. They are not medical advice or a treatment for insomnia or any health condition. Music and narration are original to Sandman Science; the real recordings used are credited below. Sound creditsThe Bloop, the Upsweep and Julia: NOAA Pacific Marine Environmental Laboratory (PMEL) Acoustics ProgramHumpback whale song: NOAA Northeast Fisheries Science Center, Passive Acoustics Branch (Meno-song-NOAA-PAGroup-13)Earthsong (Van Allen Probes chorus): Science@NASA and NASA's Goddard Space Flight CenterMars wind: NASA/JPL-Caltech/LANL/CNES/CNRS/ISAE-SupaeroSound of the Sun: A. Kosovichev, Stanford Experimental Physics Lab, from SOHO/MDI data (NASA)Juno at Ganymede: NASA/JPL-Caltech/SwRI/Univ of IowaSaturn radio emissions: NASA/JPL/University of IowaVoyager 1 interstellar plasma: NASA/JPL-Caltech/University of IowaPerseus black hole: X-ray: NASA/CXC/Univ. of Cambridge/C. Reynolds et al.; Sonification: NASA/CXC/SAO/K.Arcand, SYSTEM Sounds (M. Russo, A. Santaguida)Black hole merger GW150914: LIGO Scientific Collaboration / Gravitational Wave Open Science Center (CC BY 4.0)Sound of the Big Bang: (c) John G. Cramer, University of WashingtonSounds were softened, filtered and levelled for sleep. No endorsement by any of these organisations is implied.

    The Strangest Sounds in the Universe, Slowly Explained for Sleep
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About

Sandman Science is a place to fall asleep to the wonders of the universe. Every episode is a slow, gentle journey: a descent into the deep ocean, a drift through the solar system, a quiet walk through the natural world, narrated in a calm, unhurried voice over soft original music. No loud intros, no jarring cuts, no sudden sounds. Just long, wandering stories about real science, told slowly enough to let you drift off. Put it on, close your eyes, and let your mind wander out into the dark and quiet. Music and scripts are original to Sandman Science. Narration is an AI voice.

Information

  • Creator
    Sandman Science
  • Years Active
    2026
  • Episodes
    20
  • Rating
    Clean
  • Copyright
    © 2026 Klaasvaak Media
  • Show Website
    Sandman Science