George's Random Astronomical Object
- Autor: Vários
- Narrador: Vários
- Editora: Podcast
- Duração: 29:02:52
- Mais informações
Informações:
Sinopse
Science discussions about astronomical objects selected at random locations in the sky.
Episódios
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Object 153: A Wolf Within a Wolf
07/07/2025 Duração: 07minHen 2-113 is a rather unusual planetary nebula that formed not when a Sun-like star died but when a large, massive, and extraordinarily hot Wolf-Rayet star blew away its outer hydrogen layers.
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Object 152: The Spiderweb Flashlight
23/06/2025 Duração: 08minThe quasar PKS 2126-158 has been popular to observe because astronomers can see many different things between the quasar and Earth, including an entire cluster of galaxies, that are absorbing light from the quasar.
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Object 151: A Magnetic Whale
09/06/2025 Duração: 07minBeta Ceti is a relatively close giant star where helium fusion has been triggered in its core, but it's a bit unusual compared to other stars that have reached this stage in their evolution.
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Object 150: And Now for Something Completely the Same
26/05/2025 Duração: 09minWolf 1069 is another nearby red dwarf with an exoplanet, but this time, the exoplanet is more likely to harbor life than other nearby red dwarfs with exoplanets that I may have discussed in previous episodes.
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Object 149: Spaghetti Leftovers
28/04/2025 Duração: 09minThe globular cluster Messier 54 is not part of our galaxy but actually the nuclear stellar core of a dwarf galaxy that has nealy been completely gravitationally torn apart by the Milky Way.
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Object 148: Problem Solving
14/04/2025 Duração: 08minAlgol-type variable affected by light travel time effect caused by two smaller red dwarfs on wide orbits; this makes the variability period of the central two stars appear to vary.
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Object 147: Nothing But Gas
31/03/2025 Duração: 08minAbell 1142 is a peculiar cluster of galaxies that has formed from the merger of two smaller clusters, and its center contains nothing but gas.
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Object 146: The Prototype of Peculiar
17/03/2025 Duração: 08minSN 2002cx was the first supernova ever identified in a subclass of objects now called Type Iax supernovae.
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Object 145: Neutron Numbers Time
03/03/2025 Duração: 10minPSR J1518+4904 is one of the very few identified double neutron stars, and it has provided opportunities to perform unique measurements on the objects.
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Object 144: Heavy Metals
17/02/2025 Duração: 08minThe stars in the open cluster NGC 6253 contain abnormally large amounts of elements heavier than hydrogen and helium, and no one is quite certain why.
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Object 143: Almost Absolutely Awesome
03/02/2025 Duração: 10minGJ 887 is a very close red dwarf with two exoplanets (and a potential third) that almost look like they could harbor life except for one potential problem.
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Object 142: The Littlest Galaxy Ever Found
20/01/2025 Duração: 10minThe awkwardly-named Segue 2 is (as of the time of the publication of this episode) the smallest galaxy anyone has ever found.
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Object 141: Just a Very Nice Spiral
06/01/2025 Duração: 12minMessier 74 is just a very nice looking face-on spiral galaxy, which has made it quite useful for many different types of astrophysical analyses.
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Object 140: Imagine All the Dust
23/12/2024 Duração: 09minInfrared observations of SN 1995N indicate that the material ejected by the explosion may have produced a huge amount of dust.
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Object 139: Recoil
09/12/2024 Duração: 08minThe galaxy 3C 186 features a supermassive black hole with a mass several billions of times the mass of the Sun that has been ejected 36000 light years out of the galaxy's nucleus.
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Object 138: A Weird Example of a Weird Subclass of a Weird Class of Objects
25/11/2024 Duração: 08min4U 1850-087 is an ultracompact binary star system consisting of a whtie dwarf and a neutron star orbiting each other so closely that the neutron star can strip the outer layers off of the white dwarf.
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Object 137: The Bedtime Story of the Black Hole that was Too Large for its Galaxy
11/11/2024 Duração: 08minThe elliptical galaxy NGC 4291 contains a supermassive black hole that is unusually massive in comparison to the rest of the galaxy.
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Object 136: Barium
28/10/2024 Duração: 10minHD 11397 is one of very few Sun-like stars that might seem ordinary but actually contain abnormally large amounts of heavy elements, most notably barium, that they could not have formed themselves.
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Object 135: Feedback Time
14/10/2024 Duração: 09minNGC 3801 is one of the very few nearby galaxies where astronomers can see jets from an active galactic nucleus disrupting star formation in the galaxy in a process known as feedback.
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Object 134: Not Dead Yet
30/09/2024 Duração: 07minThe star at the center of the planetary nebula NGC 7094 is almost but not quite a white dwarf, making it a rather unusual object for astronomers to look at.