Walkabout The Galaxy
- Autor: Vários
- Narrador: Vários
- Editor: Podcast
- Duración: 228:26:52
- Mas informaciones
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Sinopsis
An irreverent and informative tour of the latest, greatest and most interesting discoveries in astronomy.
Episodios
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Gravitational Redshift and Sci-Fi Body and Time Shifts
11/05/2022 Duración: 41minLight gets redder as it climbs out of gravitational holes, and a star near the black hole at the center of the Milky Way conveniently demonstrates this beautifully. Join us for a discussion of gravitational redshift, a sci-fi discussion of time travel and body shifting, and a bit of Messier trivia.
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Mapping the Early Universe in HD
04/05/2022 Duración: 52minAs Top Quark likes to say, "You wouldn't understand: it's an early universe thing". That's why he's so excited that there's a new window into the goings on at the dawn of time by using HD. No, not high definition displays, but Hydrogen Deuteride! Oh boy, do we have fun with Deuteride on this episode. We also take a look at the crazy shuffling of planets in our own solar system, and much more.
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Planetary Decadal Survey with Almost no Uranus Jokes
27/04/2022 Duración: 46minScience marches onward, and the next steps in planetary science aim towards the seventh planet from the Sun, which shall not be named, and Saturn's little moon with a big ocean, Enceladus. Join us for a review of the new directions for planetary science research in the next decade, space news, and Uranus trivia.
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The Cosmic Significance of Tiny Things
20/04/2022 Duración: 50minTiny fragments of the dinosaur-killing asteroid may have been found, preserved in amber, and new analysis of old data reveals a tiny, but potentially profound error in the mass of one of the fundamental particles, the W boson. It's not all small, as we also take a look at the largest comet nucleus and the most powerful laser.
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The Sounds of Mars and the Lights of the Earliest Stars
06/04/2022 Duración: 46minMars has a thin atmosphere, so little changes in the weather, even breezes, make big relative changes in how sound travels. We speculate on the sounds of future baseball game on Mars before turning to a fortuitous glimpse of the light from an individual star when the universe was less than a billion years old.
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Ultralight Dark Matter
23/03/2022 Duración: 44minWhat if the stuff that makes up most of the stuff in the universe is so lightweight that you could barely call it stuff? Ultralight dark matter is one possible way to explain the puzzle of the very early formation of supermassive black holes. We explore this and the intriguing origins of Ceres, and much more.
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All the Light in the Universe
16/03/2022 Duración: 44minWe like to think we understand ordinary matter: the stuff we're familiar with that makes up stars, planets, and donuts. Sure Dark Energy and Dark Matter are mysterious, but the rest we have a handle on. Or do we? The New Horizons mission adds to a growing puzzle about the Cosmic Optical Background, not to be confused with the Cosmic Microwave Background, which is a beast of an entirely different color!
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When Galaxy Clusters Collide
09/03/2022 Duración: 49minEven the emptiness between galaxies is filled with enough energy over those vast expanses to generate shock waves and giant structures when clusters of galaxies collide. We explore this, the lives of galaxies, and some intriguing results about activity on the asteroid Ceres.
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How Smart Is Your Planet?
02/03/2022 Duración: 51minWe learn how binary star systems may create a second family of planets, Saturn's aurora may be powered by the ringed planet's high speed winds, and how thinking of planetary intelligence may guide future searches for extraterrestrial life.
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Psyche-ology and Generally Crazy Relativity
23/02/2022 Duración: 45minA remarkably accurate test of general relativity confirms that not only does time run slower at your feet than at your head, but it runs slower at your eyes than your eyebrows. Plus, Psyche loses some of its metallic sheen, and we have spacewalk trivia and much more.
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Hot Fusion and Crashing Satellites
16/02/2022 Duración: 51minSustained fusion reactions with a net production of energy may be getting closer, and a whole bunch of space junk is definitely getting closer. A long-standing mystery of Jupiter's aurorae has been resolved. Catch up on all the space news and hear the surprising history of satellite debris with the astroquarks.
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A Bouncy Universe
09/02/2022 Duración: 50minHow special is the Earth for having a large Moon, and what can it teach us about where to look for habitable planets? In this episode we explore new research on what kind of planets are likely to get helpful moons like our own, and then we take a look at the idea of an infinitely cycling, but not repeating universe.
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IWOW
02/02/2022 Duración: 44minMimas, the heavily battered "death star" moon of Saturn, may harbor a sub-surface ocean of liquid water like its neighbor, Enceladus. Water may have flowed on the surface of Mars more recently than previously thought, and there's a new denizen in the menagerie of peculiar pulsars. Learn all about it and test your pulsar trivia knowledge.
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The Local Solar Bubble and Another Dusty Star
19/01/2022 Duración: 45minThe Astroquarks assemble to examine the mysterious of a star that is blocked out perhaps by a giant dust cloud. Meanwhile, the Sun is passing through a Local Bubble in the Milky Way that has triggered star formation all around us. Join us for all this, rainbow trivia, and more.
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Lagrange Points Everywhere
12/01/2022 Duración: 44minWe welcome 2022 with a look at the future home of the James Webb Space Telescope - Earth's L2 Lagrange point, and an exploration of Lagrange points around the solar system. New research suggests the geysers of Enceladus may originate in a slush pool rather than the moon's ocean, and what would it mean if there were antimatter stars? All this and more can be found on this episode of Walkabout with your happy hosts, the astroquarks.
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Q-Balls!
22/12/2021 Duración: 48minOne of our favorite cosmological mysteries is why there is any stuff in the universe. We're here because there was a tiny fraction more matter than antimatter created. We learn about a new observational test for one theory of why that happened, and it has to do with gravitational waves and Q-Balls! Find out what they are and learn about an odd planet and giant stellar flares closer to home.
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Eggshell Planets and the Inexorable Growth of Black Holes
15/12/2021 Duración: 46minWe take a deep dive into toffee planets with The Planetary Guy, Dr. Paul Byrne, who helps us explore the myriad types of exoplanets that might be lurking out there, including some with eggshell crusts and toffee interiors. And gravitational waves have yielded another secret, confirming Stephen Hawking's Black Hole Area Theorem. Find out all about it, and black hole trivia, on WtG.
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JWST and the Era of Reionization
08/12/2021 Duración: 50minOn the eve of its long-anticipated launch, we explore one of the many areas of exploration of the JWST, the early universe after the birth of the first stars and the reionization of the interstellar medium. We also take a look at a large comet showing activity beyond the orbit of Uranus, historical trivia, space news updates, and more. Join us for a walkabout the galaxy.
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Strange Atoms and Jupiter's Deep Atmosphere
24/11/2021 Duración: 50minScientists are creating large, quantum-fuzzy atomic nuclei with large numbers of neutrons to get clues about nucleosynthesis in the very early universe. Closer to home, the Juno spacecraft has peered hundreds of km below the Jovian cloud tops to better understand its colorful stripy system of bands and zones. And we get to say "fugacity" a lot in understanding exoplanet geological activity. Join us for all this, space news, and top quark trivia.
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Perpendicular Planets and a Chip Off the Old Moon
17/11/2021 Duración: 48minWe explore an exoplanet system where the orbits of the planets are at right angles to each other. A chunk of rock trailing the Earth around the Sun may be a chunk of the Moon, and we take a look at some of the more interesting ways of getting into space and traveling long distances once we're there.