Extended version of the University Future Festival jingle. Astronomical data driven composition based on deep learning.
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Partez à la découverte d'un astrophysicien pas comme les autres. Un voyage passionnant dans la mémoire, de Hubble à la direction du planétarium de Montréal...

Un entretien entre notre cher Claude et Olivier Hernandez qui vous fera voyager !

#136 - L’astrophysicien Olivier Hennandez: d’Hubert Reeves au Planétarium de Montréal

On the largest of cosmic scales, the best description we have of our Universe is known as the ΛCDM model with an inflationary hot Big Bang: our consensus cosmology. It tells us that we have a Universe consistent with being made of about 5% normal matter, a little bit of radiation in the form of photons, around 0.1% neutrinos, and the rest made of the mysterious dark matter (~27%) and dark energy (~68%). Governed by General Relativity, this explains what we see on Solar System scales, where dark matter and dark energy are negligible, and on cosmic scales, where dark matter and dark energy are important.

But on in-between scales, we aren't quite sure that this same "consensus cosmology" leads to a very successful description. It's long been known that, on galactic scales, rotating galaxies appear to obey a different force law: MOND, for MOdified Newtonian Dynamics. In MOND, the traditional Newtonian acceleration is replaced, at very low accelerations, by a combination of the Newtonian acceleration with a fundamental new parameter, which prevents accelerations from dropping too far below a certain value: around ~10^-10 meters-per-second-squared. If this deviation is real, it should show up someplace else: in pairs of stars separated by large distances, a class of systems known as wide binaries.

Although this area of physics was widely ignored for decades, new observations with the ESA's Gaia mission have recently brought it back into the forefront, where different teams are claiming different results based on how they use and interpret the data. In this rare edition of the Starts With A Bang podcast, I sit down with astrophysicist Xavier Hernandez of UNAM in Mexico, who's one of the main players in this story and a strong advocate of MOND as an alternative to dark matter. The conversation takes many interesting turns and as a result, we've got a great episode that's nearly two hours long. (Although there is some confusion over the maximum distance that Xavier's sample goes out to in the podcast: the correct answer is not mentioned, but turns out to be ~12,000 AU, not the 6000 or 16,000 mentioned in the podcast.) Take a listen, learn some new astrophysics, but most importantly, stay open to new challenges to the conventional paradigm. If there's a crack in our consensus cosmology, this area of astrophysics might someday be the critical blow that shatters it apart!

(This photo shows the bright, naked-eye star, Albireo. To the naked eye, it appears as just a single point of light. However, a binocular or telescope view shows that it's actually two very different colored stars separated by a substantial fraction of a light year: a wide binary system. Even thousands of years after its identification, we still don't know if this is a bound system, or two stars that happen to be passing one another in close proximity. Credit: Jared Smith/Flickr)

Starts With A Bang #107 - Binary Stars And Modified Gravity

Hercules, the strong man of ancient mythology, rides high overhead in early summer. While its stars are not particularly bright, its most distinctive shape are the four stars in its center known as the Keystone. Within its borders lies one of the most famous globular star clusters of the entire night sky.

7/8/24 - Globular Cluster in Hercules

You'll be amazed at how much we can learn from iron meteorites. Who would have guessed that analysis of the compositions of these humble metallic remnants of asteroids would be able to tell us about the shape of the protoplanetary disk? We'll learn about the latest clues to the early history of our solar system, the surprising abundance of deuterons in cosmic rays provides another indicator that we still have a lot to learn about the early universe, and dark matter - well it's still out there, still dark. Join us for all this, space news, nerdy trivia and more.

Dark Matter, Deuterons, and a Mixed-Up Protoplanetary Disk

Our universe is a strange place, with underlying rules we’re only just beginning to understand, but could the strangest thing of all about our Universe be that we are able to live here to observe it in the first place?

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Credits:
The Fermi Paradox: Fine-Tuned Universe
Episode 456; July 18, 2024
Produced, Narrated & Written: Isaac Arthur
Graphics:
Jeremy Jozwik
Select imagery/video supplied by Getty Images
Music Courtesy of Epidemic Sound http://epidemicsound.com/creator
Music Courtesy of Epidemic Sound
Lombus, "Cosmic Soup"
Stellardrone,"Red Giant", "The Divine Cosmos", "Eternity", "In Time"

The Fermi Paradox: Fine-Tuned Universe (Narration Only)

The Fermi Paradox: Fine-Tuned Universe

"Astronomy Activity Book for Kids: 100+ Fun Ways to Learn About Space and Stargazing

Download at https://best.goodebook.club/?book=0593435486

Astronomy Activity Book for Kids: 100+ Fun Ways to Learn About Space and Stargazing
Astronomy Activity Book for Kids: 100+ Fun Ways to Learn About Space and Stargazing
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Astronomy Activity Book for Kids: 100+ Fun Ways to Learn About Space and Stargazing download ebook PDF EPUB, book in english language
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Astronomy Activity Book for Kids: 100+ Fun Ways to Learn About Space and Stargazing download free of book in format PDF"

Astronomy Activity Book for Kids: 100+ Fun Ways to Learn About Space and Stargazing

Now is a good time to see the dark round plains called “maria,” and bright splashes of lighter material called “rays.”  The southern maria offer some interesting sights in a small telescope.

7/15/24 - The Moon’s Southern Seas

In this light episode of Walkabout the Galaxy, Josh and Audrey discuss the first confirmation of open spaces in lava tubes connected to lunar pits on the Moon. 200 lunar pits have been observed on the Moon, and now scientists have used radar data to demonstrate that these pits are in fact connected to caverns that could provide future astronauts with a safe haven beneath the lunar surface. Join us on this short walkabout for the full story, trivia, and space news updates.

Lunar Caves for Future Habitation

L0ST IN TH3 W4TTS (TSCHOKUMA II.)

This episode marks Kiersten’s last astro[sound]bites episode (and also side note – we’re posting this on her birthday!). To recognize Kiersten for her incredible time as a co-host, we take a journey through her academic paper trail by discussing her papers on how magma and metallicities affect how we think about exoplanetary formation and observations. Then we take a deep dive into Kiersten’s time as a co-host and graduate student including her stance on “publish or perish” and what she’s most excited about starting her NASA Sagan Postdoctoral Fellowship this fall.

Kiersten’s Papers: 
https://arxiv.org/pdf/2307.13726
https://arxiv.org/pdf/2407.13821

Episode 96: kiErsten’s Exoplanetary Elemental Exit Episode

After dusk, look about a third of the way up the eastern sky for Altair, the brightest star in Aquila the Eagle and part of the Summer Triangle.

7/22/24 - The Eye of the Eagle

Snowball in Hell is a song from the musical IN ORBIT about a comet with an astute understanding of who he is, flying around the sun.

IN ORBIT

A SNOWBALL IN HELL

chicane, love on the run, love, peter cunnah, trance, music, run, the, on, cunnah, feat, dance, electronic, peter, video, pop music (musical genre), brown, lyrics, official, mix, music (tv genre), remix, vocal, house, sweet sensation: feel good house classics, love on the run (force five remix), la silla observatory, urban exploring, abondoned house, astronomy, barz, dream, chaser, hiphop, maybach, mmg, progressive, 754, haunted, stonetree, (city, lies, chicane love on the run, telesierra, boholster, movida local, remix), urbex, bohol, freestyle, haunted house, cumberland, lost place, asylum, lawnside, nj, pa, atlanta, hop, vocal trance, hip, tn, xcellon, breaks, break beat, dtt, breakbeat, remixes, content, curtis, hoffalatme, black, dreamchaser, jersey, dj, new, effects, mike brown, la máquina de la suerte, rip, rare music, crash, life, rap, spotlight tv, techno, trance music (musical genre), dance music (musical genre), radio edit, peter cunnah (composer), radio, chicane (musical artist), electronica, energy, love on the run (canonical version), trailer, rave music (musical genre), euro, rave, electro, antestius leontius, dance music, electronic music, se, 2003, dvdrip, x264, chillout, uncommercial, euro-trance, hd, nicholas bracegirdle, the best of chicane 1996 - 2009, proshow, 90's dance fever, love on the run (radio edit), presenterhayley, chilled, tv show, talk show, saturday night with hayley palmer, chat sow, beach, philippines, accoustic, blonde, dear mr president, cover, jess, pink, d ream, al mackenzie, ibrotha, shane, mikeyharris100, love on the run (chicane long mix), loveontherun, 90's dance pop, d:ream, london, viva tv germany, hayley palmer, viva club rotation, awesome, barnes, videoclip

Love On The Run

Love On The Run (Blank & Jones Dub Remix)

Love On The Run (Force Five Remix)

Love On The Run (Blank & Jones Remix)

Love On The Run (ft. Peter Cunnah) (CD1) [wea361cd]

Love On The Run (Force Five Mix)

Arizona (Part 1)

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Mike Murray from the Delta College Planetarium takes a look at what's up in the night sky. Things are happening all the time in the backyard universe, and many of them don't require a telescope to see and enjoy.

Voyage dans l’espace se veut un balado (podcast) consacré à l'exploration spatiale. Chaque épisode vous fera parcourir une dimension particulière, qu’il s’agisse de l’exploration d’une planète, de la recherche de vie dans l’Univers ou de l‘aventure des astronautes et de ceux et celles qui rêvent d’espace.

Astrobites for your ears. Three grad students bring you cutting-edge research findings in astronomy and connect the dots between diverse subfields.

Composer lyricist musical director who has been working in the theater for many years and loves Gershwin, Sondheim, Dylan, Joni Mitchell, Randy Newman andTom Waits.

New tracks tagged #astronomy