NASA’s Astronomy Picture of the Day Robert M Wagner

In today's image, we see the giant sunspot group AR 3664 which is currently crossing the face of the Sun. Sunspots are active regions on the Sun, slightly cooler than the surrounding surface. They are also associated with solar flares and coronal mass ejections when can affect us here on Earth and also contribute to auroral activity. My podcasts are available in video form through this YouTube Channel (https://www.youtube.com/channel/UCWksELVw1LfYg6TiLQyjByw).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 (https://apod.nasa.gov/apod/astropix.html). 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@gmail.com (mailto:wagnerastronomy@gmail.com?subject=APOD%20Podcast)This work is licensed under a Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/).

In today's image, we see a simulation showing the merger of two black holes. This simulation depicts what would have been happening during the first detection of gravitational waves in 2015. As the black holes spiral together, their rapid motion releases gravitation waves that we were able to detect at a distance of 1.3 billion light years.My podcasts are available in video form through this YouTube Channel (https://www.youtube.com/channel/UCWksELVw1LfYg6TiLQyjByw).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 (https://apod.nasa.gov/apod/astropix.html). 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@gmail.com (mailto:wagnerastronomy@gmail.com?subject=APOD%20Podcast)This work is licensed under a Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/).

In today's image, we see the giant elliptical galaxy, M87. In addition, we see images of the central jets and the famous image from 2017 by the Event Horizon Telescope of the supermassive black hole at the center of the galaxy.My podcasts are available in video form through this YouTube Channel (https://www.youtube.com/channel/UCWksELVw1LfYg6TiLQyjByw).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 (https://apod.nasa.gov/apod/astropix.html). 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@gmail.com (mailto:wagnerastronomy@gmail.com?subject=APOD%20Podcast)This work is licensed under a Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/).

In today's image, we see an animation which shows the central regions around a black hole including the accretion disk. The 15-second video allows us to look at this from different orientations to see the differences that are visible.My podcasts are available in video form through this YouTube Channel (https://www.youtube.com/channel/UCWksELVw1LfYg6TiLQyjByw).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 (https://apod.nasa.gov/apod/astropix.html). 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@gmail.com (mailto:wagnerastronomy@gmail.com?subject=APOD%20Podcast)This work is licensed under a Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/).

In today's image, we see an artist's conception of an event observed in 2014. A massive explosion was observed which has since been modeled as a star being ripped apart by a supermassive black hole. Here we see that as the material from the star is added to an accretion disk around the black hole. We also see jets of material expelled perpendicular to the accretion disk.My podcasts are available in video form through this YouTube Channel (https://www.youtube.com/channel/UCWksELVw1LfYg6TiLQyjByw).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 (https://apod.nasa.gov/apod/astropix.html). 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@gmail.com (mailto:wagnerastronomy@gmail.com?subject=APOD%20Podcast)This work is licensed under a Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/).

In today's image, we see time-lapse of the total solar eclipse of April 8 of this year. We will see the Moon appear in the lower right and move to full cover the Sun, allowing us to see the solar corona. My podcasts are available in video form through this YouTube Channel (https://www.youtube.com/channel/UCWksELVw1LfYg6TiLQyjByw).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 (https://apod.nasa.gov/apod/astropix.html). 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@gmail.com (mailto:wagnerastronomy@gmail.com?subject=APOD%20Podcast)This work is licensed under a Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/).