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PODCAST

The 365 Days of Astronomy

365DaysOfAstronomy.org

The 365 Days of Astronomy podcast launched in 2009 as part of the International Year of Astronomy. This community podcast continues to bring you day after day of content across the years. Everyday, a new voice, helping you see the universe we share in a new way. This show is managed by Avivah Yamani, edited by Richard Drumm. This podcast is funded through Patreon.com/CosmoQuestX and produced out of the Planetary Science Institute.

science astronomy

All Episodes

31:12

Astronomy Cast Ep. 763: Interstellar Comets

The 365 Days of Astronomy ·

2025/09/15

https://www.youtube.com/watch?v=op5hkKFWFlM Season 19. Streamed live Sep 8, 2025. Welcome to the first episode of our 19th season! This week we look at objects coming from other solar systems that come passing on by our Sun. During the summer hiatus the 3rd interstellar object was discovered: Comet 3I/ATLAS! So now we have 3 different interstellar interlopers to compare & contrast. What are we starting to learn about other star systems from this small sample size and how will our detection get even

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06:05

Travelers in the Night Eps. 331E & 332E: Asteroid...

The 365 Days of Astronomy ·

2025/09/14

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 From April 2025. Today's 2 topics: - In 2013 a 56 foot diameter space rock exploded over Chelyabinsk, Russia releasing the energy of 450 kilotons of TNT and filled local hospitals with some of the 1,500 people who were injured. Fortunately no one died. In 1908 a 200 ft diameter meteor exploded over

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11:21

NOIR Lab - Fast X-Ray Transients & The Deaths Of...

The 365 Days of Astronomy ·

2025/09/13

Since their first detection, powerful bursts of X-rays from distant galaxies, known as fast X-ray transients (FXTs), have mystified astronomers. FXTs have historically been elusive events, occurring at vast distances away from Earth and only lasting seconds to hours. Einstein Probe (EP), launched in 2024, is dedicated to observing transient events in the X-ray and is changing the game for astronomers looking to understand the origin of these exotic events. In this podcast, Dr. Robert Eyles-Ferris

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35:09

EVSN - Rockets Make Bad Neighbors

The 365 Days of Astronomy ·

2025/09/12

From September 3, 2025. In this week's episode, we take a look at the impact SpaceX launches from the Space Coast will have on their competitors and those living, working, and going to school near Kennedy and Cape Canaveral. We also look at a bunch of new science discoveries, including the origins of Ryugu & Bennu, the solar system shocked itself, a new supernova that blew off an unusual number of layers before exploding, and quick updates on Psyche, Juno, JUICE, and the number of moons orbiting

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09:30

Space Stories - Where Day Meets Night: The Equinox

The 365 Days of Astronomy ·

2025/09/11

Hosted by Avivah Yamani, our Director. We are exploring the word Equinox. We start by having the definitions, why “equal night” isn’t quite exact, how spring/autumn flip between hemispheres, and a whirlwind tour of equator monuments from Pontianak to Macapá, Cayambe, Kayabwe, Nanyuki, Ilhéu das Rolas, and Bonjol. 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

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09:22

Guide To Space - What Does the Universe Do When We're...

The 365 Days of Astronomy ·

2025/09/10

https://www.youtube.com/watch?v=L1otYvmqp6w Hosted by Fraser Cain. From Jul 19, 2016. Some of the greatest discoveries in astronomy have been made by watching how the skies change over time. Today we talk about these techniques, and an observatory that will revolutionize time-based astronomy. 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

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33:34

Ask A Spaceman Ep. 255: How Do The Biggest Stars Get...

The 365 Days of Astronomy ·

2025/09/09

How do we measure the sizes of stars? What are the biggest ones today, and how big could stars have gotten in the past? Is there any way for a star to cheat and get even bigger? I discuss these questions and more in today’s Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Watch on YouTube: http://www.youtube.com/PaulMSutter Read a book: https://www.pmsutter.com/books Keep those questions about space, science, astronomy, astrophysics,

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29:25

Astronomy Cast Ep. 155: Dwarf Stars

The 365 Days of Astronomy ·

2025/09/08

http://www.astronomycast.com/archive/ From September 14, 2009. We think we live near an average star, but that’s not the case at all. Compared to most stars in the Universe, the Sun is a giant! Let’s look at the small end of the stellar spectrum, to stars with a fraction of the size and mass of our own Sun. There are many ways that a star can get small, and they lead dramatically different lives and deaths. We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and

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06:05

Travelers in the Night Eps. 329 & 330: Near Neighbor...

The 365 Days of Astronomy ·

2025/09/07

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 From November 2024. Today's 2 topics: - My Catalina Sky Survey teammate Carson Fuls was using the new hundred million pixel camera on our team's Schmidt telescope located on Mt. Bigelow, Arizona, when he discovered 2017 AG13. It passes near the Earth's orbit twice a year on its own 345 day path

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01:37:13

Awesome Astronomy - September Part 1: Paul in...

The 365 Days of Astronomy ·

2025/09/06

Paul Hill, Ralph Wilkins and Dr. Jenifer “Dr. Dust” Millard host. Damien Phillips, John Wildridge and Dustin Ruoff produce. [Editor’s note: This episode is 1 hour 37 minutes long.] A bumper end of summer episode with Paul out in the world of science outreach and communication in a Summer music festival. There’s also discussion of the new Astronomer Royal, China’s moon program, Starship and a deep dive on the Mars Reconnaissance Orbiter. We've added a new way to donate to 365 Days of Astronomy to

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19:55

EVSN - Europa May Have Enough Heat for Seafloor...

The 365 Days of Astronomy ·

2025/09/05

From May 27, 2021. Jupiter’s moon Europa, an icy world with a subsurface ocean that interests astrobiologists, may actually be hot enough to melt the interior rock and create volcanoes on the ocean floor. Plus, Ryugu, giant planets, fossil discoveries, Martian glaciers, and this week’s 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

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30:33

Actual Astronomy - Observer’s Calendar For September

The 365 Days of Astronomy ·

2025/09/04

Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan. actualastronomy@gmail.com - Sept 1 - Aurigids ZHR=10 related to Comet Keiss The comet was discovered by Carl Clarence Kiess at Lick Observatory on a photographic plate obtained in the morning hours of 6 July 1911 with the Crocker photographic telescope. The comet appeared as a distorted nebulous object with a short tail. The presence of the comet was confirmed visually the next day. The comet had a well condensed

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14:25

Cheap Astronomy - Dear Cheap Astro Ep. 123: The Big...

The 365 Days of Astronomy ·

2025/09/03

Asking questions and not always answering them. Is there hope? Well, sure. The question arises where the Drake Equation, aiming to quantify the likely number of detectable intelligent civilizations out there includes a term representing the inherent risk of any intelligent civilization destroying itself. It is just a risk, could be low could be high, but its wide acceptance as a part of the whole equation does suggest we have some pessimism about our own future. Could dark matter be black holes

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06:24

Exoplanet Radio Ep. 41: Exoplanet Secondary Eclipses:...

The 365 Days of Astronomy ·

2025/09/02

https://www.youtube.com/watch?v=RucWv35XwD0 Hosted by Tony Darnell. From Oct 11, 2023. Over the course of this show, we’ve talked many, many times about the Transit Method for detecting exoplanets. It is simply the measure of a star's decrease in brightness as the star passes through our line of sight. This once difficult measurement has now become commonplace and can even be done with advanced amateur astronomy equipment under a reasonably dark sky. From this measurement, we can infer a few

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46:08

Astronomy Cast Ep. 126: From Skeptics Guide With...

The 365 Days of Astronomy ·

2025/09/01

http://www.astronomycast.com/archive/ From February 9, 2009. This week Bob Novella of the Skeptics Guide to the Universe podcast is going to pepper Pamela with questions, testing her ability to leap from tides to gravitational waves to Higgs bosons. We’ll see where this takes us on this skeptical journey through what is known and what we’re trying to learn about this Universe. [Editor’s note: A small bit of audio at the start of two of Bob’s questions was lost due to a technical glitch. So I

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06:05

Travelers in the Night Eps. 327 & 328: Suddenly...

The 365 Days of Astronomy ·

2025/08/31

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 From October & November 2024. Today's 2 topics: - An example that a relatively large space rock can approach the Earth suddenly started with what appeared as a bright star moving across the images that I had just obtained with the Catalina Sky Survey's 60 inch telescope on Mt. Lemmon, Arizona. It

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06:37

UNAWE Space Scoop - A Mysterious Notification From a...

The 365 Days of Astronomy ·

2025/08/30

In January 2025, astronomers woke up to an alert of a mysterious event that occurred 2.8 billion light years away from Earth. As such things go, this was fairly close to Earth and was an opportunity for detailed observation of the event’s evolution. It was a powerful burst of X-rays, known as a fast X-ray transient or FXT. This burst was named ‘EP 250108a’, after the Einstein Probe, that’s the EP part, that detected the event. Let’s call it 108a. Just between us… FXTs are generally hard to

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12:19

EVSN - Dual Quasars, Tidal Disruption Events & a Halo...

The 365 Days of Astronomy ·

2025/08/29

From August 31, 2020. Join us today as we examine observations for dual quasars in the process of merging and a star being torn apart by its supermassive black hole. Plus, Hubble data used to map a halo around the Andromeda 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!

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08:09

Space Stories - Galaxies Don’t Crash, They Remix

The 365 Days of Astronomy ·

2025/08/28

Hosted by our Director, Avivah Yamani. Today's podcast guides you through the slow-motion meeting of the Milky Way and Andromeda. Learn why stars mostly miss each other, how gravity sculpts tidal tails, and how colliding gas and dust spark starbursts—turning two spirals into one remixed galaxy. Epic? Yes. Doomsday? Nope. 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

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09:43

Guide to Space - An Intermediate Mass Black Hole...

The 365 Days of Astronomy ·

2025/08/27

https://www.youtube.com/watch?v=5iOb8kC0OuM From Sep 8, 2017. Astronomers have been searching for mid-weight black holes, and now they’ve found one, right here in the Milky Way. 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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835 results

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