Actual Astronomy - Globular Star Clusters with Peter Jedicke
Release Date: 04/18/2024
Travelers in the Night Eps. 299 & 300: Caves of Mars & Lost and Found
The 365 Days of Astronomy
Dr. Al Grauer hosts. Dr. Albert D. Grauer ( ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. Today's 2 topics: - Aug 27, 2024. Presently the surface of Mars is very dry and any liquid water that reaches it quickly boils away since the martian atmospheric pressure is what you could experience in your space suit 30 to 50 miles above the Earth's surface. However, since the martian gravity is about 1/3 that of the Earth, its crust is less dense and more porous than what we find on our home planet. - Sep 3, 2024....
info_outline
NOIR Lab - 25 Years of the Gemini International Observatory
The 365 Days of Astronomy
The Gemini International Observatory consists of two 8.1 meter telescopes located in Hawai’i and Chile. These telescopes have been at the cutting edge of astronomy research since their inception. Gemini Observatory is currently celebrating its 25th anniversary. This podcast takes a look at the first 25 years of Gemini Observatory and looks ahead to the future. Rob Sparks is in the Communications, Education and Engagement group at NSF’s NOIRLab in Tucson, Arizona. Links: Gemini Observatory: NOIRLab social media channels can be found at: We've added a new way...
info_outline
EVSN - Cool Worlds, Exploding Stars, & An Asteroid That Missed Earth
The 365 Days of Astronomy
From August 20, 2020. Join us today as we look at how citizen science helped discover 100 cool worlds nearby. Then we examine evidence that exploding stars may have contributed to a mass extinction on Earth. Speaking of mass extinctions, an asteroid narrowly missed our planet last weekend. Because 2020. We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. Just visit: 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!...
info_outline
Actual Astronomy - The Observer’s Calendar for February
The 365 Days of Astronomy
Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan. The Actual Astronomy Podcast presents The Observer’s Calendar for February 2025. In this episode we talk about what you can see in the February 2025 night sky. This month we focus on all the planets you can see, rays and craters on the Moon as well as a few deep sky objects you might see on a winter vacation. We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. Just visit: and donate as much as you can! Share the podcast with...
info_outline
Big Impact Astronomy - Cosmic Webs and Hands-On Learning with Mark Neyrick
The 365 Days of Astronomy
Hosted by Mike Simmons. - Mark Neyrick, cosmologist and research scientist at Blue Marble Space Institute, explains the cosmic web of galaxies and matter, and how this large-scale structure mirrors branching structures in nature, like trees and rivers. He discusses the artistic and educational method of using origami and tactile models to teach complex cosmological concepts, making science more accessible and memorable. - Origami models make cosmic webs tangible! By folding paper and fabric, Mark illustrates how dark matter forms cosmic filaments, offering a hands-on approach to...
info_outline
Ask A Spaceman - Could We Travel to Parallel Universes?
The 365 Days of Astronomy
Where do parallel universes exist? Could we use wormholes to travel to them? What does time travel have to do with all this? I discuss these questions and more in today’s Ask a Spaceman! Support the show: All episodes: Follow on X: Read a book: Keep those questions about space, science, astronomy, astrophysics, physics, and cosmology coming to #AskASpaceman for COMPLETE KNOWLEDGE OF TIME AND SPACE! Big thanks to my top Patreon supporters this month: Justin G, Chris L, Alberto M, Duncan M, Corey D, Robert B, Michael P, Naila, Sam R, John S, Joshua, Scott M, Rob H,...
info_outline
Astronomy Cast Ep. 742: Atmospheric Gravity Waves
The 365 Days of Astronomy
Streamed live on Jan 27, 2025. Hosted by: Fraser Cain and Dr. Pamela L. Gay Gravity Waves ... not gravitational waves ... move atmospheres and make pretty clouds. Have you ever looked up into the sky and seen bizarre cloud formations that look like waves on the ocean? These are gravity waves. Not to be confused with gravitational waves, and they’re caused by a balance of buoyancy and gravity. And of course these have been seen across the solar system. SUPPORTED BY YOU This Episode is made possible thanks to our Patrons on Patreon. Join at the Galaxy Group level or higher to be...
info_outline
Travelers in the Night Eps. 297E & 298E: Weird Centaur & Psyche Water
The 365 Days of Astronomy
Dr. Al Grauer hosts. Dr. Albert D. Grauer ( ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. From August 2024. Today's 2 topics: - Richard Kowalski discovered 2016 WM48, a Centaur. Centaurs are named after the mythical beasts which were half human and half horse perhaps because they have characteristics of both asteroids and comets. 2016 WM48, is about a mile in diameter. We don't know if it has rings, tiny moons, or a gas cloud surrounding it as some other Centaurs do. 2016 WM48 must have had a catastrophic...
info_outline
Last Minute Astronomer - February Episode
The 365 Days of Astronomy
Hosted by Rob Webb. Full text available at the Cosmos Safari Blog. February 2025 is a phenomenal continuation of January’s planetary-ness! You’ll get chances to see all the planets before going to bed and a conjunction of Mercury & Saturn. Hi everybody, I’m Rob, your Last Minute Astronomer, bringing astronomy to normies and nerds, with little time to spare. We’ll start by talking about this month’s big events, then highlight the naked eye planets, and finish up with the lunar phases, so you can plan ahead better than me. LUNAR CLOSE ENCOUNTERS The Moon...
info_outline
EVSN - Space Stories of Joy
The 365 Days of Astronomy
From January 24, 2025. It's the kind of week where we feel the need to put joy into the world, and we've made the decision to just find stories to bring a smile and share them with you. And also rockets, we're bringing you all the rocket news. We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. Just visit: 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 for cool Astronomy Cast and...
info_outlineHosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan. [email protected]
Our guest today is Peter Jedicke who was National President of the Royal Astronomical Society of Canada from 2004 to 2006 and is now a Fellow of the RASC. He is also Honorary President of the RASC London Centre. His favourite astronomical topic, both astrophysically and as an observer, is globular clusters and co-authored the RASCC Observer’s Handbook section on Star Clusters. Peter co-authors the Star Clusters section of the RASC Observer's Handbook. Lastly, Peter helped start the list of asteroid names with Canadian connections which will be our topic today but….
Let’s chat about globular star clusters since, as you pointed out Peter, it's best to focus on a narrow topic as the show time whips by!
* Helen B. Sawyer [Hogg], 1947. Out of Old Books-Catalogues of Nebulous Objects in the Eighteenth Century. Journal of the Royal Astronomical Society of Canada, Vol. 41, p. 265-273
Also: Helen B. Sawyer [Hogg], 1948. Astronomical Journal, Vol. 53, p. 117
* * What are Star Clusters?
* - 2 types: OC and GC what is the diff…maybe we’ll do Open Clusters another time.
* - Age & Number of stars which equate to variations in CLs + magnitude, colour + number.
* Where do they come from
* So what is a globular star cluster exactly?
* Why old-rich-symetrical-live in galactic halo?
* What are the differences in concentration and spectral classifications?
* What is it you enjoy about globulars?
* Variable stars in globular clusters
* Helen Sawyer Hogg & my one summer working as a "research assistant" at Western U.
* Something about where globular clusters fit in with cosmology. Age & role in galaxy mergers.
* How many have you observed?
* Where have you traveled to observe them?
* Which are your favourites?
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 [email protected].