The 365 Days of Astronomy

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 August 2025.

Today's 2 topics:

- The Trappist-1 planetary system located about 40 light years away in the constellation of Aquarius consists of a small red dwarf star and 7 Earth sized planets. By carefully studying changes in the planet's transit timings and the shape of the dip in the host star's brightness as each planet transits across it, astronomers have been able to measure the orbital...

Episode 11.

"ASTROMAN: the Dark Sky Guardian" is a podcast channel that aims to explore popular science in multiple disciplines and research on interdisciplinary approaches, such as sustainability, dark-sky protection, astrophotography, space exploration, astronomy innovation, inclusive science communication, and STEAM Education by integrating science and arts.

Exodus CL Sit, also known as the ASTROMAN, is a transmedia astronomy educator, popular science author, STEAM educator, and science communicator in Hong Kong. He is recently the National Astronomy Education Coordinator (Chair of Hong Kong, China) of the International Astronomical Union and President of Starrix. He was a...

From November 5, 2025.

In this episode, we look at some of our latest discoveries about the formation of star systems, including planets and moons, and the growth of black holes. We also take a closer look at our brightening skies, and the missions set to make things worse. We also cover the latest tales from the launch pad.

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!

Sh...

Hosted by Andy Poniros.

Info: Author, fighter pilot, test pilot, & veteran of 5 Space Shuttle missions, Captain Robert "Hoot" Gibson discusses his books, as well as his fighter pilot experiences in the Vietnam war, & his Space Shuttle missions... Including piloting the 1st untethered astronaut spacewalk, mission STS-41B & his perilous top secret mission STS-27R.

Intro Music: "A Moment in Space History", Andy Poniros

Outro Music: "Funk 2001", Larry Benigno

Organization: Cosmic Perspective Radio

We've added a new way to donate to 365 Days of Astronomy to support ed...

https://spacescoop.org/en/scoops/2524/lonely-planet-the-hungriest-found-in-space/

Hosted by Richard Drumm, our editor.

You've probably heard of exoplanets. Planets that orbit stars other than our Sun. But did you know that there are objects with a mass similar to a planet that float free in space, that don't orbit a star? These lonely wanderers are called rogue planets.

Recently, a team of astronomers discovered a very special one in the southern constellation Chameleon. The rogue planet is named Cha (for Chameleon) 1107-7626 and is located about 620 light-years away. It has a mass o...

Hosted by Tony Darnell.

From August 17, 2024.

An international team of astronomers has directly imaged this exoplanet, one of the coldest ever seen.  The team observed Epsilon Indi Ab using the coronagraph on Webb's Mid-Infrared Instrument. Only a few tens of exoplanets have ever been directly imaged by space- and ground-based observatories.  These observations are ushering in a completely new era in exoplanet research.

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 dona...

https://www.youtube.com/watch?v=14QKJkt3cIE

Streamed live on Nov 3, 2025.

Hosted by: Fraser Cain and Dr. Pamela L. Gay.

It is arguable that humanity now has the technological ability to live on Mars. It would be done at enormous expense and sacrifice, and there are some tricky problems that we haven't solved yet. Although we could live on Mars, should we? There is a famous quote from Jurassic Park: "Your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should." This concept is...

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 July & August 2025.

Today's 2 topics:

- 24 hours a day, 16,600 feet above sea level in the high dry desert of northern Chile, the 66 antennas of 1.4 billion dollar Atacama Large Millimeter/submillimeter Array or ALMA receives signals located between the infrared and radio portions of the electromagnetic spectrum. The waves that ALMA receives have a length which is about the same as the thickness of a...

Hosted by Avivah Yamani, our Director.

From latin "nebula" to stellar nurseries & ghostly shells, this episode dives into emission, reflection, dark, planetary nebulae and supernova remnants. These are the cosmic clouds at the start of star life and at the end of star life. Cradles and echoes of starlight, all in one story!

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 yo...

From April 14, 2021.

Fermilab released the first results of their Muon g-2 experiment this week, and the fundamental particles don't behave as predicted by the Standard Model of particle physics. Plus, dust, more dust, Martian water (again), and a review of Packing for Mars by Mary Roach.

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...

Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan. actualastronomy@gmail.com

Episode 507.

Paul Hill, Ralph Wilkins and Dr. Jenifer "Dr. Dust" Millard host. 

Damien Phillips, John Wildridge and Dustin Ruoff produce.

November Part 1.

Time for a Comet 3I/ATLAS deep dive, a chat about Paul's recent visit to the Cerne Abbas Starparty in Dorset and our new extended skyguide.

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...

Hosted by Dr. Paul M. Sutter.

Is the Universe infinite? What about the cosmological horizons, the limits to what we can see? Will we ever know for sure what's beyond them? 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, physics, and cosmology co...

http://www.astronomycast.com/archive/

From April 29, 2007.

What a week! Astronomers announced the discovery of an Earth-sized planet orbiting the nearby star Gliese 581! We talk about the technique used to discover the planet, the possibilities of finding even smaller planets, and what the future holds for finding another Earth.

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 an...

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 July 2025.

Today's 2 topics:

- When Asteroid hunters discover a new object it is given a score ranging from 0 which means it is likely to be a distant main belt asteroid up to 100 which means that it is likely to come near to us. Each newly discovered asteroid which receives a score of 65 or greater is posted on the Minor Planet Center's Near Earth...

https://www.youtube.com/watch?v=a8dASH8Bg_M

From  Oct 19, 2015.

Doesn't it feel like the Universe is perfectly tuned for life? Actually, it's a horrible hostile place, delivering the bare minimum for human survival.

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! Than...

From October 15, 2025.

The Universe is hard enough to figure out without one kind of object dressing up as another, but - just in time for Halloween - researchers have figured out that the Little Red Dot in the early Universe just might be massive black holes surrounded in a costume of glowing red gas. Also in this episode, Hyabusa2's amusingly tiny destination, a white dwarf star eating what may be an icy dwarf planet, and tales from the launch pad.

We've added a new way to donate to 365 Days of Astronomy to s...

Today's guest: 

Prof. Kenneth Rumstay, emeritus of Valdosta State Univeristy, talks with us today about the history of the Historical Astronomy Division. We'll learn not only about how it got started, but also about how HAD works for its members today.

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 li...

Hosted by Steve Nerlich.

Dear Cheap Astronomy – What is the right message to send to the aliens?

Keen listeners may be familiar with Cheap Astronomy's ongoing despair at Earth's lacklustre

attempts at communication with the wider Universe. A few episodes back we ran through a

history of deliberate communications to date, about 90 per cent of which have been music – well

mostly digitized and some analog radio transmissions of music.

Dear Cheap Astronomy – Can we drill through the ice and find life on Europa?

Firstly...

Hosted by Tony Darnell.

From  Dec 19, 2019.

Get Stellina Telescope Here (affiliate link): http://bit.ly/2WJrPzr

Here are my thoughts on a brand new telescope for amateur astronomers that was released by Vaonis, a  French company that has done something remarkable with the Stellina telescope, they've created a fully-automated, self-contained optical system that is unlike anything I've seen before.  This telescope is a real paradigm shift for amateur astronomy, never before has getting into the hobby been easier.

We've added a new way to donate to 365 Days of As...

https://www.youtube.com/watch?v=vSVS2x-8eG4

Hosted by: Fraser Cain and Dr. Pamela L. Gay

Streamed live on Oct 20, 2025.

New instruments bring new mysteries, and when James Webb came on line it uncovered a collection of strange, compact, bright objects shifted deeply into the red end of the spectrum. These were dubbed "Little red dots" or LRDs. And the astronomical community continues to puzzle over what they are. When JWST first peered into the distant past, it discovered the early universe had a rash of little red dots. Their existence...

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 July 2025.

Today's 2 topics:

- Recently, my Grandsons, Dane and Hank joined our asteroid hunting team at the Catalina Sky Survey 60 inch telescope on Mt. Lemmon. The most interesting of our discoveries, 2017 KJ32 is only 16 feet in diameter, orbits the Sun once every 315 days, and can come closer to us than the communications satellites. 

- My Catalina Sky Survey teammate Ca...

From July 31, 2024.

Hosted by Dr. Jacinta Delhaize, Dr. Tshiamiso Makwela & Dr. Daniel Cunnama.

In this double feature episode, Jacinta interviews two amazing astronomers at the SARAO conference (South African Radio Astronomical Observatory).

Dr. Mpati Ramotsoku is a radio astrophysicist from South Africa. In the episode she discusses her journey from studying in the Netherlands to working in Italy at the Italian National Institute of Astrophysics in Cali, and eventually returning to South Africa as a research associate at Rhodes University. She delves into her research on how galaxies evolve by studying h...

From April 13, 2021.

A new study examined the effects of recent increases in the number of space objects orbiting Earth and found that the proliferation of satellites contributes to a nearly ten percent increase over natural lighting of the night sky. Plus, Mars, Uranus, Neptune, ancient Earth, volcanoes, and our weekly What's Up segment.

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 yo...

https://www.youtube.com/watch?v=D6vU3-LGrgM

From Jul 11, 2016.

Stars can spin faster or slower than the Sun. What's the fastest that's ever been discovered, and what's the fastest speed you can have before they tear themselves apart? Everything in the Universe is spinning. Spinning planets and their spinning moons orbit around spinning stars, which orbit spinning galaxies. It's spinning all the way down.

Consider that fiery ball in the sky, the Sun. Like all stars, our Sun rotates on its axis. You can't tell because staring at the S...

Those tricky next steps.

Dear Cheap Astronomy – Could war get us into space?

There's been a long-running dialogue here at Cheap Astronomy about what economic drivers

might transform us into a proper spacefaring species with Moon bases, Mars bases and all that.

And well, its been hard to think what economic drivers really might work. Space is hard and it's

also darned expensive. Tourism could be a driver, after all there has been a bit of millionaire

tourism happening, mostly just flights above the atmosphere.

Why did we develop the International Space Station in the first place? What have we learned in its 25+ years of operation? When is it coming down, and why? And what's coming up next? 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, physics, and cosmology co...

https://www.youtube.com/watch?v=Oi72aaDhl0A

Hosted by: Fraser Cain and Dr. Pamela L. Gay

Streamed live on Oct 13, 2025.

So it's been decades since we've seen a bright comet in the sky. And actually there was a pair — Hale-Bopp and Hyakutake. And then, silence! And unmet promises by the Universe to give us a bright comet. Comets are unpredictable, and they arrive precisely when they intend to. Is it time again for a bright comet? If you asked us in January if 2025 was going to have any outstanding comets would fl...

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 June 2025.

Today's 2 topics:

- When we find a planet which appears to have the chemical signs of living organisms in its atmosphere, the desire to take a close up look at it will be hard to contain. In a Scientific American article, Lee Billings describes Yuri Milner's 100 million dollar project "Breakthrough Starshot" which has been created to leap frog our current rocket technology's...

Episode 10. How to become a citizen scientist!

"ASTROMAN: the Dark Sky Guardian" is a podcast channel that aims to explore popular science in multiple disciplines and research on interdisciplinary approaches, such as sustainability, dark-sky protection, astrophotography, space exploration, astronomy innovation, inclusive science communication, and STEAM Education by integrating science and arts.

Exodus CL Sit, also known as the ASTROMAN, is a transmedia astronomy educator, popular science author, STEAM educator, and science communicator in Hong Kong. He is recently the National Astronomy Education Coordinator (Chair of Hong Kong, China) of the International Astronomical Union a...

From Aug 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! 

Every bit...

Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan. actualastronomy@gmail.com

The Actual Astronomy Podcast Episode 503 presents M55, Helix Nebula and other Observations. In this episode we talk about a long list of observing targets from the globular star cluster M55, the Helix planetary nebula and other objects. We read a listener who emails us a sky tour for the late summer as well.

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/365Da...

https://www.youtube.com/watch?v=qWfkW2y-hAQ

From Oct 15, 2019.

Even as the first rockets were launched into space decades ago, aerospace knew it was a wasteful process. Rocket stages, motors, and complex equipment crashed into the ocean or burned up in the Earth's atmosphere. Could spaceplanes bring the costs down? Flying to orbit with a combination of jet engines and rockets and then safely re-enter the Earth's atmosphere again.

Single-stage to orbit spacecraft and spaceplanes have always seemed out of reach, and actually not that practical. But what about a t...

From October 2023.

Hosted by Tony Darnell.

The search for life on other worlds is, to say the least, a daunting and overwhelming task. We've been searching for only about one human generation and have yet to find anything in our own solar system, let alone the vast expanse of our galaxy.

To increase our chances of finding life on other planets, a systematic approach needs to be adopted, one that applies reasonable assumptions that maximize our success.  So, an important question becomes, where should we point our telescopes?

W...

https://www.youtube.com/watch?v=mCqRhiApwMQ

Season 19

Hosted by: Fraser Cain and Dr. Pamela L. Gay

Streamed live on Oct 6, 2025.

You can only describe a black hole by its mass and its spin. And maybe it's charge. But allow us to propose a new criteria: the personal experience. Some black holes have seen things… Experienced the laws of physics at their most extreme. And today we'll tell their stories. The more of the sky we observe, the more bizarre situations we find black holes in. Let's explore!

T...

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:

- Recently Dr. Yossi Shvartzvald led a team which published their discovery of an Earth sized planet using microlensing in the Astrophysical Journal Letters. The newly discovered planet OGLE-2016-BLG-1195Lb orbits a small dim object about 13,000 light years from us. With only 7.8% of the Sun's mass the new planet's star may be a brown dwarf and not a star at all. At about...

Astronomers have long predicted that the cloud forming chemical should be found in the atmospheres of brown dwarfs and gas giants. Silane had eluded detection until now. In this podcast, Dr. Aaron Meisner recounts how silane was discovered in the atmosphere of a brown dwarf nicknamed "The Accident". The Accident (WISEA J153429.75-104303.3) was discovered by citizen scientist Dan Caselden, who was using an online program he built to find brown dwarfs in NEOWISE data.

Bios: 

Rob Sparks is in the Communications, Education and Engagement group at NSF's NOIRLab in Tucson, Arizona.

...

The Gemini South Observatory, using adaptive optics, has captured stunning new images of meandering stellar jets. The sidewinding appearance is likely caused by gravitational influences of nearby companion stars. Plus, exoplanet news and a review of a Canon lens.

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...

Awesome Astronomy - The Search for Aliens with Seth Shostak

https://www.youtube.com/watch?v=Bj6Wfv1djf0

Paul Hill, Ralph Wilkins and Dr. Jenifer "Dr. Dust" Millard host. 

Damien Phillips, John Wildridge and Dustin Ruoff produce.

From Jan 3, 2022.

Our chat with Dr. Seth Shostak from our live show to ease the boredom of covid lockdowns. 

We talk about:

• The latest in the search for alien signals.

• Using the large New Mexico telescope array to search for ET.

• How ancie...

https://www.youtube.com/watch?v=Q41hLHcKyUM

From Mar 21, 2018.

Have you ever wondered how those amazing pictures of space are gathered? Which are photographs, which are illustrations, and which are total fakes?

[Editor's note: You'll have to go to the YouTube link above to see the photos.]

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 fr...