Astronomy Picture of the Day · September 2023

APOD, September 2023

30 entries from September 2023: 28 images and 2 videos. 22 carry a copyright notice from the credited creator.

The Great Globular Cluster in Hercules September 1, 2023 · Copyrighted

The Great Globular Cluster in Hercules

Image Credit & Copyright: Serge Brunier, Jean-François Bax, David Vernet OCA/C2PUNGC 7023: The Iris Nebula September 2, 2023 · Copyrighted

NGC 7023: The Iris Nebula

Image Credit & Copyright: Lorand FenyesA fuzzy comet is shown in gray on the upper left against a dark space background. The comet's tail extends diagnonally to the lower right. The main part of the comet is seen broken up into many trailing pieces. Please see the explanation fo September 3, 2023

Comet Schwassmann-Wachmann 3 Fragments

Credit: NASA , ESA , H. Weaver ( JHU / APL ), M. Mutchler and Z. Levay ( STScI )Red glowing gas is seen before a dark starfield. On the upper right is a complicated filamentary nebula in blue and red. On the lower left is a simple circular nebula in blue. Please see the explanation for more detailed information. September 4, 2023 · Copyrighted

Cygnus: Bubble and Crescent

Credit & Copyright: Abdullah Al-HarbiA large Moon is seen behind a historic stone structure. Please see the explanation for more detailed information. September 5, 2023 · Copyrighted

Blue Supermoon Beyond Syracuse

Credit & Copyright: Kevin SaragozzaHESS Telescopes Explore the High-Energy Sky September 6, 2023 · Video · Copyrighted

HESS Telescopes Explore the High-Energy Sky

Video Credit & Copyright: Jeff Dai ( TWAN ), H.E.S.S. Collaboration ; Music: Ibaotu catalog number 1044988 (Used with permission)The Large Cloud of Magellan September 7, 2023 · Copyrighted

The Large Cloud of Magellan

Image Credit & Copyright: Chris Willocks / Telescope.LiveStar Factory Messier 17 September 8, 2023 · Copyrighted

Star Factory Messier 17

Image Credit & Copyright: Kim Quick , Terry Hancock , and Tom Masterson ( Grand Mesa Observatory )A comet is shown with its green coma on the bottom right and a long and structured ion tail flowing diagonally across the image toward the top left. Please see the explanation for more detailed information. September 9, 2023 · Copyrighted

Comet Nishimura Grows

Credit & Copyright: Peter KennettA person is seen standing at the top of a ridge. The person appears as a silhouette onto the central dark region of an annular solar eclipse. The annular solar eclipse is a bright ring with a large dark hole in the middle. Please see the ex September 10, 2023 · Copyrighted

An Annular Solar Eclipse over New Mexico

Credit & Copyright: Colleen PinskiA scenic and hilly landscape is shown just before sunrise. On the left is Comet Nishimura near the horizon with a long tail fading off toward the top of the frame. On the right is a bright spot that is Venus. The sunrise sky is dark blue at September 11, 2023 · Copyrighted

Beautiful Comet Nishimura

Credit & Copyright: Petr Horálek / Institute of Physics in OpavaGalaxy Cluster Abell 370 and Beyond September 12, 2023

Galaxy Cluster Abell 370 and Beyond

Image Credit: NASA , ESA , Jennifer Lotz and the HFF Team ( STScI )A galaxy with blue spiral arms is seen in the image center in the midst of numerous foreground stars. This galaxy is surrounded by a white envelope, which was found to be hydrogen gas. Please see the explanation for more detailed informatio September 13, 2023

NGC 4632: Galaxy with a Hidden Polar Ring

Credit: Jayanne English ( U. Manitoba ), Nathan Deg ( Queen’s University ) & WALLABY Survey , IDIA/Vislab , CSIRO / ASKAP , NAOJ / Subaru Telescope ; Text: Jayanne English (U. Manitoba)NGC 7331 and Beyond September 14, 2023 · Copyrighted

NGC 7331 and Beyond

Image Credit & Copyright: Ian GorensteinVenus, Moon, and the Smoking Mountain September 15, 2023 · Copyrighted

Venus, Moon, and the Smoking Mountain

Image Credit & Copyright: Luis Miguel Meade RodríguezFireball over Iceland September 16, 2023 · Copyrighted

Fireball over Iceland

Image Credit & Copyright: Jennifer FranklinA dark circle is seen in the image center. On both the left and right of the circle are a series of bright half-rings. Some parts of these bright half rings are dark, and the dark areas look similar to mountains. Please see the explanation September 17, 2023 · Copyrighted

Moon Mountains Magnified during Ring of Fire Eclipse

Credit & Copyright: Wang Letian ( Eyes at Night )A lone tree is seen on the right of a dark grassy field. Above and on the right, a bright red filamentary glow is seen in the sky. The filaments of this glow may seem similar to the branches of the tree. Please see the explanation for more September 18, 2023 · Copyrighted

The Red Sprite and the Tree

Credit & Copyright: Maxime VillaeysTwo jets are seen in red and blue moving out from a central object shroueded by a diffuse dark brown. The rest of the frame is dark but with an few bright stars. Please see the explanation for more detailed information. September 19, 2023

HH 211: Jets from a Forming Star

Credit: NASA , ESA , CSA , Webb ; Processing: Tom Ray ( DIAS Dublin )An artist's illustration pictures a cloudy red planet orbiting a distant red star. Near the exoplanet is a moon. Please see the explanation for more detailed information. September 20, 2023

Methane Discovered on Distant Exoplanet

Illustration Credit: Ahmad Jabakenji ( ASU Lebanon , North Star Space Art ); Data: NASA , ESA , CSA , JWSTTagging Bennu September 21, 2023

Tagging Bennu

Image Credit: OSIRIS-REx , University of Arizona , NASA , Goddard Scientific Visualization StudioCosmos in Reflection September 22, 2023 · Copyrighted

Cosmos in Reflection

Image Credit & Copyright: Jeff Dai ( TWAN )Afternoon Analemma September 23, 2023 · Copyrighted

Afternoon Analemma

Image Credit & Copyright: Ian Griffin ( Otago Museum )A Ring of Fire Sunrise Solar Eclipse September 24, 2023 · Video

A Ring of Fire Sunrise Solar Eclipse

Video Credit: Colin Legg & Geoff Sims ; Music: Peter NanasiA starfield with two bright stars at the top of the frame and two galaxies at the bottom. The upper galaxy is a spiral galaxy and has an appearance reminiscent of a hummingbird. The lower galaxy is a featureless elliptical galaxy. Please se September 25, 2023 · Copyrighted

Arp 142: The Hummingbird Galaxy

Image Credit: NASA , ESA , Hubble , HLA ; Processing & Copyright: Basudeb ChakrabartiA starfield surrounds a large nebula that is mostly brown and blue and has an appearance reminiscent of the head of a horse. This nebula is not the more famous September 26, 2023 · Copyrighted

IC 4592: The Blue Horsehead Reflection Nebula

Image Credit & Copyright: Antoine & Dalia GrelinA rural road is pictured running to the horizon with rural grassy fields on both sides. Rising from the lower left is the central band of our Milky Way Galaxy. Rising from the horizon -- just at the visible end of the road, is a thin twisti September 27, 2023 · Copyrighted

STEVE and Milky Way Cross over Rural Road

Image Credit & Copyright: Theresa ClarkeThe Deep Lagoon September 28, 2023 · Copyrighted

The Deep Lagoon

Image Credit & Copyright: Josep Drudis , Christian SasseBack from Bennu September 29, 2023

Back from Bennu

Image Credit: NASA/Keegan BarberA Harvest Moon over Tuscany September 30, 2023 · Copyrighted

A Harvest Moon over Tuscany

Image Credit & Copyright: Antonio Tartarini

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