NASA’s Astronomy Picture of the Day

40 Episodes
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By: Robert M Wagner

These podcasts are my discussion of NASA's Astronomy Picture of the Day. These are brief (3-5 minute) audio summaries of the picture posted on NASA's Picture of the Day website: APOD. Video versions of these are available on YouTube. I use these as the introduction to each of my introductory astronomy classes. Students will be able to access them here to review what was discussed in class. I appreciate any comments or suggestions which can be sent to: [email protected].

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2026 October 20 - An Anticrepuscular Rainbow Fan
Last Tuesday at 5:00 AM

A partial rainbow and a golden fan of anticrepuscular rays make sunlight seem to originate from the wrong side of the sky. Raindrops, cloud shadows, and perspective explain why the real Sun is behind the camera.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link above the image to select the photo corresponding to the date of this...


2026 October 19 - Treble Clef: Unusual X-ray Hot Source
Last Monday at 5:00 AM

The Treble Clef's looping radio structure sits within hot, X-ray-emitting gas in a merging galaxy cluster. Combined observations suggest that the collision revived particles left behind by an earlier black-hole outburst.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link above the image to select the photo corresponding to the date of this podcast.

...


2026 October 18 - Sonifed: Eagle Nebula Pillars
Last Sunday at 5:00 AM

The Eagle Nebula's Pillars of Creation become an audible experience as telescope image data are translated into sound. Listen to a complete sonification, then explore how the mapping makes astronomical structures accessible in another way.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link above the image to select the photo corresponding to the date of this podcast.<...


2026 October 17 - 3D 67P
Last Saturday at 5:00 AM

Rosetta's close-up view of Comet 67P reveals a rugged nucleus releasing jets of material near the Sun. Following the comet over time showed scientists how its landscape changes and what its escaping gas and dust contain.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link above the image to select the photo corresponding to the date of this...


2026 October 16 - Chasing the International Space Station
Last Friday at 5:00 AM

A predawn Falcon 9 launch shares the sky with the International Space Station as a sunlit exhaust plume expands overhead. This timelapse shows the contrast between a cargo spacecraft heading toward orbit and a reusable booster returning to Earth.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link above the image to select the photo corresponding to the date...


2026 October 15 - The Milky Way over Manhattan
10/15/2026

A near-infrared camera reveals the Milky Way above Manhattan's bright skyline. By rejecting much of the city's visible-light glow while retaining infrared starlight, the photograph shows how wavelength selection can improve astronomical contrast.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link above the image to select the photo corresponding to the date of this podcast.

<...


2026 October 14 - Mars and the Beehive Under an Aurora
10/14/2026

Mars appears among the stars of the Beehive Cluster beneath a colorful aurora. The scene combines a temporary planetary alignment with green and red light emitted high in Earth's atmosphere.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link above the image to select the photo corresponding to the date of this podcast.

I...


2026 October 13 - Desert Stairway to Heaven
10/13/2026

A desert stairway appears to rise into the Milky Way, surrounded by zodiacal light and colorful airglow. This scene brings together starlight from our galaxy, sunlight scattered by Solar System dust, and light emitted by Earth's atmosphere.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link above the image to select the photo corresponding to the date of...


2026 October 12 - Jupiter and the Moons
10/12/2026

Earth's crescent Moon shares this view with Jupiter and its four large Galilean moons. Their apparent alignment and the Moon's faint earthshine reveal how distance, perspective, and reflected sunlight shape the scene.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link above the image to select the photo corresponding to the date of this podcast.

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2026 October 11 - Ice Fishing for Cosmic Neutrinos
10/11/2026

A deep hole in Antarctic ice is part of IceCube’s unusual way of studying the universe. Buried sensors detect faint light from particles produced in rare neutrino interactions, giving astronomers another cosmic messenger.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link above the image to select the photo corresponding to the date of this podcast.

...


2026 October 10 - Lunar Farside
10/10/2026

The Moon’s farside is a heavily cratered landscape with far fewer dark lava plains than the side we see from Earth. This spacecraft mosaic reveals a contrasting surface history, while tidal locking explains why we normally see only the other face.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link above the image to select the photo co...


2026 October 09 - Stickney Crater
10/09/2026

Stickney Crater dominates this close-up of Phobos, one of Mars’s small moons. Its enormous impact scar and streaked walls reveal how collisions and even very weak gravity reshape a tiny world.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link above the image to select the photo corresponding to the date of this podcast.

...


2026 October 08 - The Saturn System Smörgåsbord
10/08/2026

In today’s image, Saturn’s atmospheric bands, intricate rings, and several moons appear in a remarkable ground-based photograph. Steady air and lucky imaging help reveal details that Earth’s atmosphere would otherwise blur.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.

...


2026 October 07 - Supernova Pa 30
10/07/2026

In today's image, we see supernova remnant Pa 30 which resembles a cosmic firework, but it is likely the remnant of a supernova observed in 1181. Its surviving central star and newly revealed chains of gas knots offer clues to an unusual, incomplete stellar explosion.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the...


2026 October 06 - A Complete Auroral Oval from SMILE
10/06/2026

In today's image, we seeIn today's video, we see a remarkable view of Earth's complete auroral oval captured in ultraviolet light by the SMILE spacecraft. This time-lapse reveals the changing structure of the aurora and helps scientists investigate how the solar wind interacts with Earth's magnetic field.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the...


2026 October 05 - M 104: The Sombrero Galaxy's Tidal Streams
10/05/2026

In today's image, we see an unusually deep view of M104, the Sombrero Galaxy, revealing faint stellar streams and an extensive halo surrounding its familiar bright disk. These structures offer clues to the galaxy's history of gravitational interactions and mergers.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to...


2026 October 04 - Supernumerary Rainbows over New Jersey
10/04/2026

In today's image, we see a remarkable display of supernumerary rainbows photographed over New Jersey. The additional colored bands inside the main rainbow are produced by interference, revealing the wave nature of light.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.

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2026 October 03 - Selfie at Vera Rubin Ridge
10/03/2026

In today's image, we see a remarkable selfie taken by NASA's Curiosity rover while exploring Vera Rubin Ridge on Mars. The image combines dozens of photographs into a panoramic view of the rover and the rugged Martian landscape.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date...


2026 October 02 - The Complete Sharpless Catalog: 313 Nebulas
10/02/2026

In today's image, we see a complete collection of the Sharpless Catalog - all 313 nebulae images over about three and a half years by one photographer.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.

I welcome comments and suggestions...


2026 October 01 - Harvest Moon with Erupting Mount Etna
10/01/2026

In today’s image, we see the Harvest Moon rising over Sicily near an erupting Mount Etna. The composite captures the Moon’s changing position during twilight while volcanic ash, clouds, and atmospheric color transform the landscape below.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of t...


2026 September 30 - Arp 78: Peculiar Galaxy in Aries
09/30/2026

In today’s image, we see an example of a peculiar galaxy — one whose shape has been distorted by tidal interactions with a nearby galaxy.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.

I welcome comments and suggestions about thes...


2026 September 29 - Sh2-144: The Shrimp Nebula
09/29/2026

In today's image, we see the planetary nebula known as the Shrimp Nebula. This is the type of nebula which forms at the end of the life of a star like our Sun. In this case, the entire nebula is moving rapidly to the upper left.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image...


2026 September 28 - Cosmic Latte: The Average Color of the Universe
09/28/2026

In today's image, we see what the average color of the universe would be if one averaged the spectra of hundreds of thousands of galaxies.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.

I welcome comments and suggestions about...


2026 September 27 - Andromeda Before Photoshop
09/27/2026

In today's image, we see an image of the Andromeda Galaxy consisting of hundreds of five minute exposures stacked together. The first image shows the raw image with satellite trails, airplanes, cosmic rays, and bad pixels. The second image shows the cleaned up version after processing.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image...


2026 September 26 - Mirrored Meteor and Milky Way
09/26/2026

In today's image, we see on o the Perseus meteors from last month reflected off several of the panels in one of the telescopes of the Cherenkov Telescope Array Observatory.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.

I...


2026 September 25 - Globular Star Cluster Omega Centauri
09/25/2026

In today's image, we see the globular star cluster Omega Centauri. This may actually be the remnant core of a small galaxy that has been disrupted by the Milky Way.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.

I...


2026 September 24 - The Ghosts of Five Supernovas
09/24/2026

In today's image, we see five supernovae in the sky in this deep image requiring 200 hours' of observing of this portion of the sky.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.

I welcome comments and suggestions about these...


2026 September 23 - A New Lunar Crater: McGetchin
09/23/2026

In today's image, we see a newly formed crater on the Moon known as McGetchin. This formed sometime between April and May of 2024 based on images seen before and after by the Lunar Reconnaissance Orbiter.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.<...


2026 September 22 - Chance Triple Alignment - Plane, Space Station, Sun
09/22/2026

In today's image, we see a chance alignment with our Sun. On the solar surface we see sunspots. and passing in front of it, by coincidence, we see the International Space Station and an airplane.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.<...


2026 September 21 - Cocoon Nebula Wide Field
09/21/2026

In today's image, we see the Cocoon Nebula - a star forming region in the constellation of Cygnus.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.

I welcome comments and suggestions about these podcasts. I can be reached here...


2026 September 20 - Analemma over Callanish Stones
09/20/2026

In today's image, we see a solar analemma as seen over the Callanish stone circle in Scotland.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.

I welcome comments and suggestions about these podcasts. I can be reached here: wagnerastronomy...


2026 September 19 - A Zodiacal Night
09/19/2026

In today's image, we see the zodiacal light stretching up from the horizon. The planets Jupiter and Mars are visible as well.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.

I welcome comments and suggestions about these podcasts. I...


2026 September 18 - M33: The Triangulum Galaxy
09/18/2026

In today's image, we see one of the spiral galaxies in our Local Group. This contains our Milky Way and the Andromeda Galaxy. M33 would be the third largest galaxy in our Local Group.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.

<...


2026 September 17 - A Treasure Chest in the Carina Nebula
09/17/2026

In today's image, we see a treasure chest in which the jewels inside a stars which have blown the lid off of the chest with their strong stellar winds.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.

I welcome...


2026 September 16 - Webb's View of M64
09/16/2026

In today's image, we see two images of M64 - Visible light from Hubble and infrared from Webb. This allows us to see different parts of the galaxy.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.

I welcome comments...


2026 September 15: A Daytime Eclipse: Moon Occults Venus
09/15/2026

In today's image, we see the end of an occultation. This occurred when our Moon passed in front of Venus. In the image, we see Venus shortly after it emerged from behind our Moon.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.

<...


2026 September 14 - Where Your Elements Came From
09/14/2026

In today's image, we see a periodic table of the element which shows the primary source for each of the elements and where it is produced.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.

I welcome comments and suggestions...


2026 September 13 - Comet NEOWISE Rising over the Adriatic
09/13/2026

In today's image, we see a time-lapse video made from 250 images taken over half an hour as the comet rose in the morning sky back in July 2020.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.

I welcome comments and...


2026 September 12 - Apollo 11: Catching Some Sun
09/12/2026

In today's image, we see an image taken by Neil Armstrong from the surface of the Moon back in 1969. In the image, Buzz Aldrin is setting up an experiment to catch some particles from the solar wind which would later be returned to Earth for study.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image...


2026 September 11 - M83: The Southern Pinwheel
09/11/2026

In today's image, we see the spiral galaxy known as M83. This is a spiral galaxy with many red star forming regions populating the spiral arms.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.

I welcome comments and suggestions...