syzygy – Details, episodes & analysis
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syzygy
Chris Stewart & Emily Brunsden
Frequency: 1 episode/19d. Total Eps: 135

Join astronomer Dr Emily Brunsden and enthusiastic not-astronomer Dr Chris Stewart as they explore the universe.
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🇨🇦 Canada - astronomy
27/07/2025#76🇬🇧 Great Britain - astronomy
27/07/2025#37🇺🇸 USA - astronomy
27/07/2025#26🇨🇦 Canada - astronomy
26/07/2025#67🇬🇧 Great Britain - astronomy
26/07/2025#39🇺🇸 USA - astronomy
26/07/2025#26🇨🇦 Canada - astronomy
25/07/2025#66🇬🇧 Great Britain - astronomy
25/07/2025#49🇺🇸 USA - astronomy
25/07/2025#30🇨🇦 Canada - astronomy
24/07/2025#59
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122: Syzygy Live! — The Power of Seeing It For Yourself
Season 1 · Episode 122
vendredi 19 juillet 2024 • Duration 01:03:07
Live from York's Festival of Ideas*, in front of an audience of ... what, had to be a few hundred thousand people, right? ... Emily and Chris discuss some awesome astronomy that you can go outside and see with your own eyes. In particular, they go deep on the incredible May 2024 aurora, and show what the 2024 total eclipse across the USA looked like, with a preview of amazing eclipses to look forward to in the coming years. Chris finishes with a song, as he does. Watch on YouTube!
(* Apologies for the audio quality, it was a big echo-ey space and it didn’t record as well as I’d hoped)
Help us make Syzygy even better! Tell your friends and give us a review, or show your support on Patreon: patreon.com/syzygypod
Syzygy is produced byChris Stewart and co-hosted by Dr Emily Brunsden from the Department of Physics at the University of York.
On the web:syzygy.fm | Instagram & Threads: @syzygypod
Some of the things we talk about in this episode:
• Watch this live show on YouTube
• The May 2024 Aurora
• The Solar Dynamics Observatory
• The 2024 total solar eclipse
121: Dark Bubbles of Weakness
Season 1 · Episode 121
mardi 4 juin 2024 • Duration 49:37
A huge team of astronomers — and their even-huger team of tiny, fibre-obtic-wielding robots — are zeroing in on one of the great questions of cosmology: just what the heck is going on with Dark Energy? We know the Universe is expanding. Apparently, it's expanding faster. But maybe it is expanding faster, slower? Tiny robots measuring breathtakingly-huge cosmic bubbles may give us an answer.
Help us make Syzygy even better! Tell your friends and give us a review, or show your support on Patreon: patreon.com/syzygypod
Syzygy is produced byChris Stewart and co-hosted by Dr Emily Brunsden from the Department of Physics at the University of York.
On the web:syzygy.fm | Instagram & Threads: @syzygypod
Some of the things we talk about in this episode:
• Announcement of the DESI results
• A good video about the results
• The DESI home page
• Heat Death or Big Rip
112: Unexpected JuMBOs
Season 1 · Episode 112
lundi 9 octobre 2023 • Duration 58:34
JWST is flinging out Just Wonderful observations at great speed, many already leading to new astronomical insights. Here's one that was really unexpected: the Orion Nebula is full of JuMBOs! Jupiter-Mass Binary Objects, that is — pairs of giant planets (or planetty-things, the definition isn't terribly clear ...) floating free in space, in quantities that aren't possible based on what we *thought* we understood about planet formation. New observations that seem to break astrophysics? We're always up for that discussion!
Help us make Syzygy even better! Tell your friends and give us a review, or show your support on Patreon: patreon.com/syzygypod
Syzygy is produced by Chris Stewart and co-hosted by Dr Emily Brunsden from the Department of Physics at the University of York.
On the web: syzygy.fm | Twitter: @syzygypod
Things we talk about in this episode:
• The Fibonacci Sequence
• The JuMBOs papers: overview, and JuMBO-specific
• The Orion Nebula
• JWST gets a good look at the Orion Nebula
• Where is the Orion Nebula, exactly?
• The definition of “planet"
26: How To Build A Solar System
Season 1 · Episode 26
mercredi 19 décembre 2018 • Duration 40:42
Help us make Syzygy even better! Tell your friends and give us a review, or show your support on Patreon: patreon.com/syzygypod
Syzygy is produced by Chris Stewart and co-hosted by Dr Emily Brunsden from the Department of Physics at the University of York.
On the web: syzygy.fm | Twitter: @syzygypod
Things we talk about in this episode:
The early solar system: https://www.space.com/35526-solar-system-formation.html
Stellar nurseries: https://en.wikipedia.org/wiki/Star_formation
Pillars of creation: https://www.nasa.gov/image-feature/the-pillars-of-creation
The Snow Line: https://en.wikipedia.org/wiki/Frost_line_(astrophysics)
Models of planet formation: http://cosmicdiary.org/geminiplanetimager/2015/09/16/what-do-we-know-about-planet-formation/
Where did Earth’s water come from? https://cosmosmagazine.com/geoscience/where-did-earth-get-its-water
Jupiter and Saturn migration: https://www.nasa.gov/topics/solarsystem/features/young-jupiter.html
Hot Jupiters: https://www.nasa.gov/feature/jpl/investigating-the-mystery-of-migrating-hot-jupiters
25: Picture The Sky
Season 1 · Episode 25
lundi 10 décembre 2018 • Duration 48:53
Help us make Syzygy even better! Tell your friends and give us a review, or show your support on Patreon: patreon.com/syzygypod
Syzygy is produced by Chris Stewart and co-hosted by Dr Emily Brunsden from the Department of Physics at the University of York.
On the web: syzygy.fm | Twitter: @syzygypod
Things we talk about in this episode:
Image 1, The Pillars of Creation, from Time Magazine’s 100 Photos site: http://100photos.time.com/photos/nasa-pillars-of-creation
The Pillars of Creation — 2015 update: https://www.nasa.gov/image-feature/the-pillars-of-creation
Comparing the two images: https://www.spacetelescope.org/images/heic1501d/
Modelling the Pillars in 3D: https://www.youtube.com/watch?v=uWklVPvk0C8
Image 2, Huge Hubble panorama of Andromeda galaxy: https://www.spacetelescope.org/images/heic1502a/
Zoom into Andromeda! https://www.spacetelescope.org/images/heic1502a/zoomable/
A video zoom into the Andromeda image: https://youtu.be/aLlQxsGyhnw
A fly-through in 4k: https://www.youtube.com/watch?v=udAL48P5NJU
The zoom that broke Chris’s brain: http://hubblesite.org/image/3478/news_release/2015-02
Chris’s video on Andromeda’s awesomeness: https://www.youtube.com/watch?v=wicEtpPfry4
Chris Baker, Galaxy on Glass: https://galaxyonglass.com
Image 3, Chris’s Witch’s Broomstick: https://galaxyonglass.com/product/supernova-the-witchs-broom/
The Witch’s Broom, a.k.a The Veil Nebula: https://en.wikipedia.org/wiki/Veil_Nebula
The Cygnus Loop Nebula: https://www.nasa.gov/mission_pages/galex/pia15415.html
Image 4, Chris’s Rosette: https://galaxyonglass.com/product/the-rosette/
The Rosette Nebula: https://oneminuteastronomer.com/2477/rosette-nebula/
Strömgren Spheres: https://en.wikipedia.org/wiki/Strömgren_sphere
24: Black Holes Feeding On Colliding Galaxies
Season 1 · Episode 24
vendredi 23 novembre 2018 • Duration 38:30
Help us make Syzygy even better! Tell your friends and give us a review, or show your support on Patreon: patreon.com/syzygypod
Syzygy is produced by Chris Stewart and co-hosted by Dr Emily Brunsden from the Department of Physics at the University of York.
On the web: syzygy.fm | Twitter: @syzygypod
Things we talk about in this episode:
The merging galaxies paper: https://www.nature.com/articles/s41586-018-0652-7
Hubblesite article about the story: https://www.nasa.gov/feature/goddard/2018/astronomers-unveil-growing-black-holes-in-colliding-galaxies
Simulations of galaxy collisions: https://svs.gsfc.nasa.gov/10687
Stephan’s Quintet: https://apod.nasa.gov/apod/ap140327.html
Keck Observatory: http://www.keckobservatory.org
Gravitational wave discovery: https://www.ligo.caltech.edu/news/ligo20170927
Simulations of SMBH mergers: https://www.space.com/42017-merging-supermassive-black-holes-eerie-glow.html
Milky Way and Andromeda are going to collide: https://www.nasa.gov/mission_pages/hubble/science/milky-way-collide.html
And they will form … Milkdromeda! https://svs.gsfc.nasa.gov/30955
Andromeda in the night sky: https://apod.nasa.gov/apod/ap061228.html
If only Andromeda was a bit brighter: http://i.imgur.com/EpuhHJa.png
23: Syzygy Live! from YorNight 2018
Season 1 · Episode 23
lundi 19 novembre 2018 • Duration 41:24
Help us make Syzygy even better! Tell your friends and give us a review, or show your support on Patreon: patreon.com/syzygypod
Syzygy is produced by Chris Stewart and co-hosted by Dr Emily Brunsden from the Department of Physics at the University of York.
On the web: syzygy.fm | Twitter: @syzygypod
Things we talk about in this episode:
YorNight 2018: https://www.york.ac.uk/news-and-events/events/yornight/2018/
The Kepler mission: https://www.nasa.gov/mission_pages/kepler
Kepler runs out of fuel: https://www.space.com/41363-kepler-exoplanet-hunting-telescope-dead.html
TESS: https://tess.gsfc.nasa.gov
NASA’s heart-tugging animation: https://nasaviz.gsfc.nasa.gov/20284
NASA’s Exoplanet Travel Bureau: https://exoplanets.nasa.gov/alien-worlds/exoplanet-travel-bureau/
Kepler 78b: https://exoplanets.nasa.gov/resources/226/kepler-78b/
Kepler 64b: https://exoplanets.nasa.gov/resources/222/kepler-64b-four-star-planet/
Musical note: Chris would like to acknowledge that he now realises that The Exoplanet Song’s chorus melody is really quite similar to the verse melody from Jason Mraz’s “I’m Yours”. And by “quite similar” he means “almost identical to”. He’d like to point out that he did have a sneaking suspicion there was a reason the song had come to him so quickly … So, you know, thanks Jason.)
22: How To Measure The Universe
Season 1 · Episode 22
vendredi 9 novembre 2018 • Duration 48:44
SYZYGY LIVE! Join us for a very special live podcast recording at the University of York’s YorNight 2018: https://www.york.ac.uk/news-and-events/events/yornight/2018/
Help us make Syzygy even better! Tell your friends and give us a review, or show your support on Patreon: patreon.com/syzygypod
Syzygy is produced by Chris Stewart and co-hosted by Dr Emily Brunsden from the Department of Physics at the University of York.
On the web: syzygy.fm | Twitter: @syzygypod
Things we talk about in this episode:
Chris’s video about the cosmic distance ladder: https://www.youtube.com/watch?v=EFoHlWK571k
The AU: https://en.wikipedia.org/wiki/Astronomical_unit
A very simple Parallax explanation: https://youtu.be/iwlMmJs1f5o
Parsec definition: https://en.wikipedia.org/wiki/Parsec
Cepheid Variables: https://www.space.com/15396-variable-stars.html
NGC 4258: http://chandra.harvard.edu/photo/2014/m106/
Type 1a Supernovae: https://imagine.gsfc.nasa.gov/science/objects/supernovae2.html
Edwin Hubble: https://www.spacetelescope.org/about/history/the_man_behind_the_name/
Redshift and blueshift: https://www.space.com/25732-redshift-blueshift.html
Hubble’s Constant: https://www.youtube.com/watch?v=0EP5cNoNuXo
The expanding universe as explained by Brian Cox: https://www.youtube.com/watch?v=PR6wN8ym7SI
21: BepiColombo goes to Mercury
Season 1 · Episode 21
vendredi 2 novembre 2018 • Duration 45:45
SYZYGY LIVE! Join us for a very special live podcast recording at the University of York’s YorNight 2018: https://www.york.ac.uk/news-and-events/events/yornight/2018/
Want to help us make Syzygy even better? Tell your friends and give us a review, or show your support on Patreon: patreon.com/syzygypod
Syzygy is produced by Chris Stewart and co-hosted by Dr Emily Brunsden from the Department of Physics at the University of York.
Visit us at syzygy.fm or find us on Twitter: @syzygypod
Things we talk about in this episode:
SYZYGY LIVE! Podcast recording at YorNight 2018 https://www.york.ac.uk/news-and-events/events/yornight/2018/
NASA’s Mercury page: https://solarsystem.nasa.gov/planets/mercury/overview/
NASA’s Messenger Mission: https://www.nasa.gov/content/nasa-s-messenger-spacecraft-10-years-in-space
BepiColombo’s going to Mercury: http://sci.esa.int/bepicolombo/59288-bepicolombo-s-journey-to-mercury/
JAXA, Japan’s space agency: http://global.jaxa.jp
Giuseppe “Bepi” Colombo: https://www.esa.int/About_Us/Welcome_to_ESA/ESA_history/Giuseppe_Bepi_Colombo_Grandfather_of_the_fly-by
ESA’s video showing BepiColombo’s journey: https://www.youtube.com/watch?v=0Yp-q1wqgig
Animation of Mercury’s 3:2 orbital resonance: https://www.youtube.com/watch?v=AUde7LFOlPs
Tidal Locking: https://www.universetoday.com/123391/what-is-tidal-locking/
Ice on Mercury: https://www.nasa.gov/image-feature/water-ice-on-mercury/
Colour maps of Mercury: https://www.universetoday.com/102901/messengers-unique-view-a-colorful-spinning-planet-mercury/
The solar wind: https://solarscience.msfc.nasa.gov/SolarWind.shtml
The Great Observatories: https://en.wikipedia.org/wiki/Great_Observatories_program
20: Photo of a Black Hole
Season 1 · Episode 20
vendredi 26 octobre 2018 • Duration 38:18
Want to help us make Syzygy even better? Tell your friends and give us a review, or show your support on Patreon: patreon.com/syzygypod
Syzygy is produced by Chris Stewart and co-hosted by Dr Emily Brunsden from the Department of Physics at the University of York.
Visit us at syzygy.fm or find us on Twitter: @syzygypod
Things we talk about in this episode:
SYZYGY LIVE! Podcast recording at YorNight 2018 https://www.york.ac.uk/news-and-events/events/yornight/2018/
Fermi’s new constellations for the high-energy sky: https://www.york.ac.uk/news-and-events/events/yornight/2018/
Imaging the SMBH at the centre of the Milky Way: https://www.nytimes.com/2018/10/04/magazine/how-do-you-take-a-picture-of-a-black-hole-with-a-telescope-as-big-as-the-earth.html
Event Horizon Telescope: https://eventhorizontelescope.org
Emily’s Astrocampus at the Uni of York : https://eventhorizontelescope.org
Sagittarius A*: https://en.wikipedia.org/wiki/Sagittarius_A*
Star S2: https://en.wikipedia.org/wiki/S2_(star)
A truck-full of data: https://what-if.xkcd.com/31/
The Black Hole (movie): https://www.rottentomatoes.com/m/1002497_black_hole
Interstellar (movie): https://www.rottentomatoes.com/m/interstellar_2014
The physics of the Interstellar black hole: https://www.wired.com/2014/10/astrophysics-interstellar-black-hole/
Gravitational lensing: https://www.spacetelescope.org/science/gravitational_lensing/
Pale Blue Dot: https://solarsystem.nasa.gov/resources/536/pale-blue-dot/
Carl Sagan on the Pale Blue Dot image: https://www.youtube.com/watch?v=wupToqz1e2g