Astronomy Cast Ep. 10: Measuring Distance in the Universe
Release Date: 07/28/2025
Equatorial Sky Guide - September
The 365 Days of Astronomy
Hosted by our Director, Avivah Yamani. September’s equatorial sky features Venus, Saturn, Mars, Jupiter, dark Milky Way nights, the September equinox, and a lunar occultation of Venus. 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 CosmoQuest t-shirts, coffee mugs and other awesomeness! This...
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EVSN - On Background: The Anatomy of a Comet
The 365 Days of Astronomy
Hosted by: Dr. Pamela L. Gay () From September 1, 2026. In this special episode, funded by the National Science Foundation, we’re taking a break from the headlines to study the changing anatomy of a comet. 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 CosmoQuest t-shirts, coffee mugs and...
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Actual Astronomy - The Observer’s Calendar for September
The 365 Days of Astronomy
Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan who enjoy teaching astronomy classes and showing the public views through their telescopes. In Episode 549 of Actual Astronomy, hosts Chris and Shane present the Observer’s Calendar for September 2026, highlighting key celestial events for amateur astronomers throughout the month. Highlights include the Sept 1 Aurigids meteor shower peak, a Venus-Spica conjunction on Sept 2, two regional star parties in early September, and a Moon occultation of Jupiter on Sept 8. Observing targets throughout the...
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Awesome Astronomy - Holy Flipping Galaxies Batman!
The 365 Days of Astronomy
September Part 1! Paul Hill and Dr. Jenifer “Dr. Dust” Millard host. Damien Phillips, John Wildridge and Dustin Ruoff produce. So it turns out… -The Milky Way may have done a back flip… -News about the Swift telescope, -NASA raiding its bare cupboards, and -A super fast star. -A nova in Sagitta! Also… -Our usual skyguide and wittering. -Oh, and a song. You will be full of antici……….pation! 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...
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Deep Astronomy - The Most Distant Galaxy Ever Measured
The 365 Days of Astronomy
Hosted by Tony Darnell. From October 24, 2010. On Oct 19, 2010, astronomers announced the measurement of a redshift of 8.6 for one of the galaxies in the Ultra Deep Field. That corresponds to a galaxy seen just 600 million years after the Big Bang! Here's the news release from ESO's website: The Nature paper: 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!...
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Astronomy Cast Ep. 8: Meteor Showers. Yes, the Sky is Falling!
The 365 Days of Astronomy
Hosted by: Fraser Cain () and Dr. Pamela L. Gay () From October 30, 2006. Dress warmly, gather some friends and family, and head outside to watch sand burn in the upper atmosphere. There’s nothing like a good meteor shower. Fraser and Pamela explain this beautiful phenomenon: what causes them, the best storms and showers to watch for, and different types of meteors you might see. 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...
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Travelers in the Night Eps. 371 & 372: Kiwi Nights & Close Ones
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 January, 2026. Today's 2 topics: - New Zealand's 4.5 million people are concentrated in three major population centers which to various degrees suffer from the modern plague of light pollution. However, most of New Zealand's large rural areas and land reserves, covering an area as large as the UK, have unpolluted natural night skies. A completely unique place to experience New Zealand's natural night sky is the...
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Space Stories - Syzygy, When Worlds Line Up
The 365 Days of Astronomy
Hosted by our Director, Avivah Yamani. What is a syzygy? Explore one of astronomy’s strangest words and discover how the Sun, Earth, Moon, eclipses, transits, and tides are all connected by cosmic alignment. 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 CosmoQuest t-shirts, coffee mugs and...
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EVSN - After Hours #8: Making Moons & Getting Cratered With William K Hartmann
The 365 Days of Astronomy
Hosted by: Dr. Pamela L. Gay () From August 13, 2026. Across a long career, Dr. William Hartmann has done everything from innovating how the Moon was formed to founding the Planetary Science Institute to defining space art for a new generation; a generation that included host Pamela Gay. Tune in to hear about science, art, and how they can mix as individuals both make new discoveries, and the illustrations to accompany them! 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...
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Guide To Space - Are Aliens Watching Us & How Could We Hide? With Dr. David Kipping
The 365 Days of Astronomy
From Jan 14, 2020. Hosted by: Fraser Cain () Once again, at the AAS Meeting in Hawaii, I got a chance to sit down with another astronomer to talk about their research. This time it was Dr. David Kipping from Columbia University's Cool World's Lab. We talked about how easy it'll be for aliens to know our planet is inhabited, and some ways we might be able to hide the evidence of our existence. Dr. Kipping’s channel: 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...
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From November 13, 2006.
You hear distances all the time in astronomy. This star is 10 light-years away; that galaxy is 50 million light-years away; that Big Bang over there happened 13.7 billion years ago. But how did astronomers actually figure out how far away everything is? It’s not a single measuring stick. Instead, astronomers have built up a series of overlapping measuring tools (yes, we’re calling supernovae and variable stars “tools”), which take us from right around the corner to very ends of the Universe. Get out your ruler… no, the bigger one… never mind… just listen.
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!
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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu
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