The 365 Days of Astronomy 365DaysOfAstronomy.org

H’ad astra historia is the official podcast for the Historical Astronomy Division of the American Astronomical Society.  We’re here to share stories from and about the people who study the stars, planets, and the cosmos.  We’ll be hearing from individuals who not only study the history of astronomy, but also those who lived it, who were “in the room” during pivotal events within the last 50 years or so.  
 
Today’s guest is Dr. Luna Zagorac, who talks about Egyptian Star Clocks.
Dr. J. Luna Zagorac
https://perimeterinstitute.ca/people/luna-zagorac
 
Astrogen – The Astronomy Genealogy Project
https://astrogen.aas.org/front/index.php
 
Ultralight Dark Matter – Yale Univ Dept of Physics article on Zagorac’s successful thesis defense
https://physics.yale.edu/news/luna-zagorac-successfully-defends-thesis-light-dark-ultralight-dark-matter-phenomenology 
 
podcast music: "Frost Waltz" Kevin MacLeod (incompetech.com), licensed under creative commons: by attribution 4.0 license (http://creativecommons.org/licenses/by/4.0/)
 
Bio: 
Loretta Cannon, an AAS affiliate via Rose City Astronomers, is a member of the leadership committee for the Historical Astronomy Division (2023-2025). She is a polymath with degrees in anthropology, microbiology, and biochemistry, and has many years of experience in both the private sector and government. When not reading some of her way-too-many books, she watches BritBox, creates recipes, or plays in the garden. She chose science writing/editing in astronomy as a new career. In short, she’s a sciencephile-word-nerd-foodie-with-a-plant-habit who really likes the stars.
 
We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 
Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!
Share the podcast with your friends and send the Patreon link to them too! 
Every bit helps! Thank you!
------------------------------------
Do go visit http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness!
http://cosmoquest.org/Donate This show is made possible through your donations. 
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------------------------------------
The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu
Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

https://www.youtube.com/watch?v=MWA3OUyQQIQ
Streamed live on Apr 22, 2024.
How old is that star? That planet? That nebula? Figuring out the ages of astronomical objects is surprisingly challenging. Fortunately, astronomers have developed a series of techniques they can use to work out the ages of stuff.
 
This video was made possible by the following Patreon members:
Jordan Young
BogieNet
Stephen Veit
Jeanette Wink
Siggi Kemmler
Andrew Poelstra
Brian Cagle
David Truog
Ed
David
Gerhard Schwarzer
THANK YOU! - Fraser and Dr. Pamela
 
We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 
Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!
Share the podcast with your friends and send the Patreon link to them too! 
Every bit helps! Thank you!
------------------------------------
Do go visit http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness!
http://cosmoquest.org/Donate This show is made possible through your donations. 
Thank you! (Haven't donated? It's not too late! Just click!)
------------------------------------
The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu
Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org
Today's 2 topics:
- My team, the Catalina Sky Survey, would not find a single asteroid without Steward Observatory's Mount Lemmon Operations, or Mtn Ops for short. Bottom line is that Mtn Ops does whatever it takes to make our Asteroid Hunting facilities continue to function.
- Since 1900 there have been 11 close approaches by asteroids larger than 300 feet in diameter. One of them, the Tunguska Object was about 400 feet in diameter. It entered the Earth's atmosphere and exploded with such force that it blew down trees over an 800 square mile area in 1908. Hopefully that will not happen again anytime soon.
 
We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 
Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!
Share the podcast with your friends and send the Patreon link to them too! 
Every bit helps! Thank you!
------------------------------------
Do go visit http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness!
http://cosmoquest.org/Donate This show is made possible through your donations. 
Thank you! (Haven't donated? It's not too late! Just click!)
------------------------------------
The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu
Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Hosted by Dr. Jacinta Delhaize & Dr. Daniel Cunnama.
The Event Horizon Telescope (EHT) Collaboration has unveiled the first image of the supermassive black hole at the centre of our own Milky Way galaxy! This is the first direct evidence of the black hole in our galaxy. The image was produced by a global research team called the EHT Collaboration, using observations from a worldwide network of radio telescopes.
 
We are joined by Dr. Iniyan Natarajan who is a postdoctoral fellow at the University of Witwatersrand and who was part of the team of over 300 astronomers who made this possible.
 
EHT Press Release: 
https://eventhorizontelescope.org/blog/astronomers-reveal-first-image-black-hole-heart-our-galaxy
We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 
Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!
Share the podcast with your friends and send the Patreon link to them too! 
Every bit helps! Thank you!
------------------------------------
Do go visit http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness!
http://cosmoquest.org/Donate This show is made possible through your donations. 
Thank you! (Haven't donated? It's not too late! Just click!)
------------------------------------
The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu
Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

From January 20, 2022.
The Hunga Tonga-Hunga Ha’apai volcano in the Kingdom of Tonga erupted on January 15, and despite communications being cut off, government officials and scientists have gathered a wealth of information about the event and its outcome so far. Plus, urban heat islands, volcanic lightning, and What’s Up.
 
We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 
Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!
Share the podcast with your friends and send the Patreon link to them too! 
Every bit helps! Thank you!
------------------------------------
Do go visit http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness!
http://cosmoquest.org/Donate This show is made possible through your donations. 
Thank you! (Haven't donated? It's not too late! Just click!)
------------------------------------
The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu
Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

https://www.youtube.com/watch?v=PSInnKa4ODE
Paul Hill, Ralph Wilkins and Dr. Jenifer “Dr. Dust” Millard host. 
Damien Phillips, John Wildridge and Dustin Ruoff produce.
But really it’s all just a big Ralph Fest today!
From  Mar 25, 2022.
If you’ve never been to the southern hemisphere (or the northern hemisphere, if you live in the southern hemisphere), you might not be aware that the moon and the constellations appear upside down!
 
In this episode we’ll show you how that appears, why, and how that proves the Earth isn’t flat - as if any more proof were needed!
 
We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 
Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!
Share the podcast with your friends and send the Patreon link to them too! 
Every bit helps! Thank you!
------------------------------------
Do go visit http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness!
http://cosmoquest.org/Donate This show is made possible through your donations. 
Thank you! (Haven't donated? It's not too late! Just click!)
------------------------------------
The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu
Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.