Épisodes

  • From Stopping Light to Space Junk — Your Questions Answered

    From Stopping Light to Space Junk — Your Questions Answered
    Jul 13 2026
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    In this Q&A edition of Space Nuts, host Andrew Dunkley and astronomer Professor Fred Watson tackle intriguing audience questions ranging from the possibility of stopping a photon to the complexities of intertwining electromagnetic fields. They also discuss the speeds of colliding particles in the Large Hadron Collider and the growing issue of excess satellites in space. Join us for a fascinating exploration of these cosmic queries!
    Chapters:
    (00:00) Space Nuts aims to answer audience questions in a Q and A edition(01:04) Professor Fred Watson answers an audio question from Andrew Chunk(02:03) Kevin asks question regarding whether we have stopped a photon from moving(10:30) Fred: The fabric of space time consists of different fields(14:30) Stay safe online with our sponsor, NordVPN Space Nuts(16:28) Question comes from Andy from Cheshire, UK(22:52) There is growing problem of excess satellites in space and what to do(30:10) Mark: Everything you said, um, is possible(30:38) If you have questions for Space Nuts, send them in

    Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.
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    33 min
  • Cosmic Queries Unleashed: Gravitons, Expanding Universes & the Weight of Space Travel

    Cosmic Queries Unleashed: Gravitons, Expanding Universes & the Weight of Space Travel
    Jul 6 2026
    Universe, and WeightlessnessIn this Q&A edition of Space Nuts, Andrew Dunkley and Professor Fred Watson tackle an array of intriguing listener questions that delve into the complexities of the universe. From the implications of an expanding universe to the elusive graviton and the experience of transitioning from weightlessness back to Earth's gravity, this episode promises to enlighten and entertain.Main Topics:
    • The potential for a future black void in our night sky as the universe continues to expand.
    • Understanding the graviton: Why do some physicists believe in its existence despite its elusive nature?
    • Exploring the properties of photons and their wave-particle duality.
    • The impact of long-term weightlessness on astronauts and their return to normal gravity.
    • Listener feedback and inspiring stories about engaging younger generations in astronomy.
    Timestamps:
    • 00:00 - Introduction to today's Q&A session and listener engagement
    • 02:30 - Clint's question about the future of the night sky and cosmic expansion
    • 12:45 - Alan's deep dive into gravitons and their connection to gravity
    • 28:00 - Misty's inquiry about the wave function of particles and photons
    • 40:15 - Casey's question on the effects of returning to gravity after weightlessness
    • 50:30 - Final thoughts and encouragement for listener questions
    Resources & Links:
    • Support Space Nuts
    Join Andrew and Fred Watson for another fascinating exploration of the cosmos, and don't forget to send in your questions for future episodes. Keep your curiosity alive and continue to look up!
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    33 min
  • The Pink, Salty Exoplanet — Could Humanity Travel to the Galaxy’s Most Colorful World?

    The Pink, Salty Exoplanet — Could Humanity Travel to the Galaxy’s Most Colorful World?
    Jul 2 2026
    Space Nuts Episode 369: Exploring Phobos, Pink Exoplanets, and Saving the SWIFT Observatory
    This episode dives into some of the most intriguing space stories, from the mysterious Martian moon Phobos and its peculiar orbit to the bizarre, salt-colored exoplanet GJ 504b—possibly a pink dwarf. Plus, learn about a swift rescue mission to save the vital SWIFT space observatory.
    In this episode:
    The unique orbit and origin hypotheses of Phobos, including upcoming JAXA mission MMX
    How Phobos's orbit might decay within millions of years and its potential internal structure
    The discovery and characteristics of the pink, salty exoplanet GJ 504b
    The debate over whether GJ 504b is a planet, brown dwarf, or star
    The challenges faced by the aging SWIFT observatory and innovative plans for its rescue
    Listener questions about universe expansion, gravitons, particles, and effects of space travel on humans
    Timestamps:
    00:00 - Overview of today's space stories and why they matter
    00:40 - Insights on Phobos, Mars's close-in moon with unusual orbit
    03:01 - How Phobos's orbit is unstable and upcoming JAXA's MMX mission
    04:37 - Theories about Phobos's origin: collision vs. capture
    07:05 - Surface features and internal structure of Phobos
    09:24 - The future of Phobos and its potential collision with Mars
    14:00 - Discovery of the pink, salty exoplanet GJ 504b
    15:09 - Why GJ 504b is unique: direct imaging, color, and spectral analysis
    16:07 - Is GJ 504b a planet, brown dwarf, or a star?
    17:37 - The temperature of GJ 504b and implications for its classification
    19:45 - How James Webb observations reveal salt clouds in GJ 504b's atmosphere
    21:03 - Could GJ 504b be a pink dwarf? The classification debate
    22:38 - Comparing planetary colors: Jupiter, Saturn, and the implications
    23:05 - Fun cultural tidbits: Pink salt, salt coffee, and other salty things
    24:44 - Urgency in the SWIFT space observatory rescue mission
    26:08 - The history and importance of SWIFT since 2004
    28:53 - The evolving orbit of SWIFT and innovative launch plans by Catalyst Space Technologies
    31:42 - Challenges in orbital correction and the future of space observatories
    34:34 - Final thoughts from Fred and the excitement of upcoming space missions
    35:11 - Wrap-up and call for listener questions on space, particles, and the universe
    Resources & Links:
    Japanese Martian Moons Explorer (MMX)
    GJ 504b Details and Discovery
    James Webb Space Telescope
    Catalyst Space Technologies
    Royal Astronomical Society Monthly Notices
    Connect with the Guests & Hosts:
    Andrew Dunkley - Twitter
    Professor Fred Watson - Twitter
    Note: This episode combines deep space science, recent breakthroughs, and listener engagement, making complex topics approachable and fascinating. Stay tuned for upcoming missions, scientific debates, and space trivia that make our universe endlessly intriguing.

    Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.
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    35 min
  • Unraveling Cosmic Mysteries: Big Rips, Neutron Collisions & Lunar Sunsets

    Unraveling Cosmic Mysteries: Big Rips, Neutron Collisions & Lunar Sunsets
    Jun 29 2026
    In this episode of Space Nuts, join Andrew Dunkley and Professor Fred Watson as they dive into a myriad of listener questions, exploring the cosmos with curiosity and humour. From the enigma of the Big Rip and the mysteries surrounding the universe's beginnings to the fascinating dynamics of colliding neutron stars and the potential for lunar sunsets, this Q&A edition promises to enlighten and entertain.Main Topics:
    - The Big Rip vs. the Big Crunch: Is the Big Crunch making a comeback in cosmological discussions? [00:00–15:00]
    - Exploring the concept of 'nothing' before the Big Bang: What does it mean and why is it so perplexing? [15:01–30:00]
    - The collision of neutron stars: What happens and the implications for cosmic safety? [30:01–45:00]
    - Lunar sunsets: Could you witness the sun's corona from the moon, and what is the effect of lunar dust? [45:01–60:00]
    - Reflections on cosmic mysteries and the future of lunar exploration. [60:01–70:00]
    Resources & Links:
    - Cosmic Microwave Background Radiation Studies
    - Research on Neutron Star Collisions
    - Upcoming Lunar Exploration Missions
    Connect with Professor Fred Watson:
    LinkedIn | Twitter
    Join us for another fascinating journey through the universe, and don’t forget to send in your questions for future episodes! Stay curious, and keep looking up!
    Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.
    00:00 –This is a Q and A edition of Space Nuts. We answer audience questions
    01:56 –Fred: Question comes from Martin Berman Govine about the Big Crunch
    09:54 –The RIP concept is probably more favourable than the crunch concept
    10:30 –Mike asks question about whether there was anything before the Big Bang
    16:51 –The cosmic microwave background radiation dates 380,000 years after the Big Bang
    18:23 –When two neutron stars collide, do any fragments break off into the universe
    20:14 –Colin says neutron stars are formed by gravitational collapse at end of star's life
    23:05 –Our final question today comes from Bill in relation to the solar eclipse
    24:40 –Could you see lunar corona from the surface, Professor Fred Watson says
    28:50 –Space Nuts podcast available at Apple Podcasts, Spotify and iHeartRadio
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    29 min
  • How Impact Craters Could Have Reversed Venus’s Rotation—The Surprising Science

    How Impact Craters Could Have Reversed Venus’s Rotation—The Surprising Science
    Jun 26 2026
    In this episode of Space Nuts, Andrew Dunkley and Professor Fred Watson explore fascinating topics ranging from the mysterious double moon dust implications and Venus's unusual rotation to updated protocols for announcing extraterrestrial evidence. They also delve into the intriguing potential of moon dust as a record of extinct civilizations and future lunar construction solutions, all while reflecting on the universe's expansion and the search for intelligent life beyond Earth.
    Main Topics:
    The concept of moon dust remnants potentially indicating alien megastructures or extraterrestrial artifacts.
    The recent research explaining Venus's peculiar retrograde rotation and the impact hypothesis involving a large impactor.
    Updated protocols from the International Academy of Astronautics (IAA) for credible extraterrestrial life detection announcements.
    The potential for lunar surface dust, especially 'technograins,' to harbor evidence of past civilizations.
    Technological prospects for lunar infrastructure, including 3D printing using moon dust and the economics of relocating materials to build lunar bases.
    The discussion of the universe's expansion, dark energy, and the likelihood of future scenarios like the Big Rip, Big Crunch, or indefinite expansion.
    The importance of rigorous verification for scientific claims and the dangers of misinformation, especially on social media.
    Timestamps:
    00:00 - Introduction to extraterrestrial moon dust and alien artifacts
    02:14 - New findings on Venus's rotation and impact theories
    03:52 - Updated protocols for announcing extraterrestrial evidence
    10:37 - Moon dust as remnants of alien civilizations
    24:17 - Future lunar habitation and construction using moon dust
    33:00 - The challenges and possibilities of lunar infrastructure
    44:00 - The expanding universe: dark energy, Big Rip, and Big Crunch
    55:30 - The nature of time before the Big Bang and current theories
    58:38 - The potential for observing lunar sunsets and corona phenomena
    67:41 - The inevitability of future lunar sunset observations
    69:12 - Closing remarks and climate of scientific inquiry
    Resources & Links:
    Research on Venus's Rotation by ETH Zurich
    Declaration of Principles for Search for Extraterrestrial Intelligence
    Phys.org Moon and Space Mining articles
    Space Connect Article on Extraterrestrial Protocols
    The Bright Side - Moon Dust as Building Material
    NASA - Artemis Program
    The European Geosciences Union Conference Vienna
    Connect with Professor Fred Watson:
    LinkedIn
    Twitter
    Keep questioning and exploring — our universe is full of mysteries waiting to be uncovered.

    Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.
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    38 min
  • Cosmic Queries: Weighty Matters, Stellar Ages & Moonless Earth Scenarios

    Cosmic Queries: Weighty Matters, Stellar Ages & Moonless Earth Scenarios
    Jun 22 2026
    Q&A Edition: Cosmic Curiosities and What-If Scenarios In this engaging episode of Space Nuts, hosts Andrew Dunkley and Professor Fred Watson tackle a range of intriguing questions from our listeners. From the nuances of weight variations on Earth to the implications of a moonless planet, join us for a deep dive into cosmic curiosities and scientific speculation.
    Episode Highlights:
    - Weight Variations: DJ from Indianapolis wonders about the difference in weight between the North Pole and the equator, leading to a discussion on gravity, centrifugal force, and the shape of the Earth [00:00–15:00].
    - The Age of the Solar System: Nick from Cambridge asks about the age of the solar system and the older material that contributed to its formation, prompting an exploration of supernovae and isotope ratios [15:01–30:00].
    - Interstellar Travel: Keith from Vancouver ponders the feasibility of reaching another star, sparking a conversation about current technology, time dilation, and the future of space exploration [30:01–45:00].
    - What If the Moon Disappeared? Mark shares a nostalgic reference to Space 1999, leading to a thought-provoking discussion on the potential effects of a moonless Earth on tides, climate, and planetary stability [45:01–60:00].

    For more Space Nuts, including our continuously updating newsfeed and to listen to all our episodes, visit our website. Follow us on social media at SpaceNutsPod on Facebook, Instagram, and more. We love engaging with our community, so be sure to drop us a message or comment on your favourite platform.
    If you’d like to help support Space Nuts and join our growing family of insiders for commercial-free episodes and more, visit spacenutspodcast.com/about.
    Stay curious, keep looking up, and join us next time for more stellar insights and cosmic wonders. Until then, clear skies and happy stargazing.

    Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.

    - Weight Differences on Earth
    - Age of the Solar System and Supernovae
    - Future of Interstellar Travel
    - Implications of a Moonless Earth
    - Listener Questions and Cosmic Speculations
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    31 min
  • Cosmic Connections: Mapping Magnetic Fields, Dark Matter Mysteries & SpaceX's IPO Success

    Cosmic Connections: Mapping Magnetic Fields, Dark Matter Mysteries & SpaceX's IPO Success
    Jun 18 2026
    Join us as we delve into the latest space science stories, from the universe's most comprehensive magnetic map to the mysteries of black holes and dark matter. Our casual chat is packed with insights into ongoing research and space exploration plans, including Elon Musk's ventures into space and beyond.
    In this episode:
    The CSIRO's groundbreaking map of the universe's magnetic fields, five times more extensive than previous efforts, revealing complex galactic structures and the role of magnetic fields in galaxy evolution [00:00–10:00]
    How polarization and Faraday rotation are used to infer magnetic fields across the cosmos, and what the map tells us about the Milky Way's center [10:00–12:40]
    The innovative method of reverberation mapping in studying black holes and the potential connection to dark matter congregations around these cosmic giants [16:37–22:39]
    The speculative but exciting prospects for interstellar travel, including the limitations posed by physics, time dilation effects near relativistic speeds, and the Breakthrough Starshot initiative [50:57–55:36]
    Elon Musk's recent public offer of SpaceX ventures, merchandise, and the symbolism of mission patches and rockets, illustrating his flair and boldness in space entrepreneurship [24:00–34:10]
    The impact of lunar and planetary dynamics on Earth's tides, weather, and ocean currents, with reflections on moonless Earth scenarios [60:00–62:48]
    Nostalgic references to 70s science fiction, notably Space 1999, and its imaginative visions of moon-based colonies and space wandering [58:56–59:53]
    For enthusiasts eager to explore further, check out resources like:
    CSIRO's Magnetic Map of the Universe
    Breakthrough Starshot Initiative
    SpaceX Official Website
    Physical Review D - Space Science Publications
    Connect with our guest, Professor Fred Watson:
    LinkedIn | Twitter
    Looking for the perfect space-themed gear? Visit our Shop for stickers, caps, T-shirts, and mission patches that celebrate our cosmic curiosity.
    Join the conversation: Share your questions or comments at spacenutspodcast.com, and help us explore the universe together. Thanks for listening—until next time, keep looking up!

    Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.
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    34 min
  • Stellar Q&A: Rusty Moons, Space Stations & What If Earth Disappeared?

    Stellar Q&A: Rusty Moons, Space Stations & What If Earth Disappeared?
    Jun 15 2026
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    Q&A: Cosmic Queries and What If Scenarios In this thought-provoking episode of Space Nuts, hosts Andrew Dunkley and Professor Fred Watson dive into a range of intriguing questions posed by our curious listeners. From the mysteries of small celestial bodies to the hypothetical survival of humanity's legacy, this episode explores the cosmos through the lens of imagination and scientific inquiry.
    Episode Highlights:
    - Small Bodies in the Solar System: Bill's question about why small bodies aren't all fluffy leads to a fascinating discussion on the formation of planets and the role of gravity in shaping these celestial objects.
    - Leaving a Legacy:Peter's thought-provoking "what if" scenario about leaving something behind after Earth's destruction sparks a conversation about the Voyager spacecraft and humanity's enduring mark on the universe.
    - Saturn's Moons and Rings: Martin asks about the minimum size for an object to be classified as a moon, leading to an exploration of Saturn's numerous satellites and the dynamics of its iconic ring system.
    - Impact of a Space Station: Finn's imaginative query about a giant space station's effect on the Earth and Moon orbits prompts a discussion on gravitational dynamics and the stability of planetary systems.

    For more Space Nuts, including our continuously updating newsfeed and to listen to all our episodes, visit our website. Follow us on social media at SpaceNutsPod on Facebook, Instagram, and more. We love engaging with our community, so be sure to drop us a message or comment on your favourite platform.
    If you’d like to help support Space Nuts and join our growing family of insiders for commercial-free episodes and more, visit spacenutspodcast.com/about.
    Stay curious, keep looking up, and join us next time for more stellar insights and cosmic wonders. Until then, clear skies and happy stargazing.

    Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.

    - Formation of Small Celestial Bodies
    - Humanity's Cosmic Legacy
    - Saturn's Moons and Ring Dynamics
    - Gravitational Effects of Space Structures
    - Listener Questions and Cosmic Curiosities
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    32 min