Astronomy Picture of the Day · October 2023

APOD, October 2023

31 entries from October 2023: 30 images and 1 videos. 28 carry a copyright notice from the credited creator.

An empty desert is shown with rolling tan sand dunes and a tan glow to the air above. A lone tree grows in the image center. High above, the Sun glows - but the center of the Sun is blackened out by an unusual disk. Please see the explanati October 1, 2023 · Copyrighted

A Desert Eclipse

Image Credit & Copyright: Maxime DavironA normal starry sky is punctuated by by several very unusually shaped red objects, known as sprites. These sprites are shown in very high details including several very well defined October 2, 2023 · Copyrighted

Sprite Lightning in High Definition

Image Credit & Copyright: Nicolas EscuratA vertical planetary nebula is shown in orange around the outside but with a blue glow in the center. The outside is shaped like a tilted hourglass, while the inside appears similar to an eye. Please see the explanation for more detailed in October 3, 2023 · Copyrighted

MyCn 18: The Engraved Hourglass Planetary Nebula

Image Credit & Copyright: NASA , ESA , Hubble , HLA ; Processing & Copyright: Harshwardhan PathakA colorful star field surrounds a big blue reflection nebula. The nebula is elongated across the wide frame and said to resemble the head of folklore-based witch. Please see the explanation for more detailed information. October 4, 2023 · Copyrighted

IC 2118: The Witch Head Nebula

Image Credit & Copyright: Abdullah AlharbiRing of Fire over Monument Valley October 5, 2023 · Copyrighted

Ring of Fire over Monument Valley

Image Credit & Copyright: Tunc Tezel ( TWAN )Edwin Hubble Discovers the Universe October 6, 2023 · Copyrighted

Edwin Hubble Discovers the Universe

Image Credit & Copyright: Courtesy Carnegie Institution for ScienceThe featured image shows M31, the Andromeda Galaxy, in both infrared light, colored orange, and visible light, colored white and blue. Please see the explanation for more detailed information. October 7, 2023 · Copyrighted

The Once and Future Stars of Andromeda

Image Credit: NASA , NSF , NOAJ , Hubble , Subaru , Mayall , DSS , Spitzer ; Processing & Copyright: Robert Gendler & Russell CromanA partially eclipse Sun is shown. In front of the Sun are sunspots, the Moon, clouds, and an airplane. Please see the explanation for more detailed information. October 8, 2023 · Copyrighted

Plane, Clouds, Moon, Spots, Sun

Image Credit & Copyright: Doyle and Shannon SliferA partially eclipse of a Sun rising over water is shown. A ship appears on the right. The Sun appears reddened by the Intervening Earth's atmosphere. An inversion layer in the atmosphere makes part of the Sun appeared doubled near the horiz October 9, 2023 · Copyrighted

A Distorted Sunrise Eclipse

Image Credit & Copyright: Elias ChasiotisThe center of the Orion Nebula is seen in infrared light as imaged by the James Webb Space Telescope. In the center is the Trapezium Star Cluster. The main image is in near infrared light, while the rollover image is in mid-infrared light. October 10, 2023

Hidden Orion from Webb

Image Credit & License: NASA , ESA , CSA , JWST ; Processing: M. McCaughrean & S. PearsonA nearby spiral galaxy is shown in great details: NGC 1097. However the galaxy is imaged twice, once with a supernova spot appearing on a lower spiral arm, and once without. The two frames blink back and forth. Please see the explanation fo October 11, 2023 · Copyrighted

NGC 1097: Spiral Galaxy with Supernova

Image Data: Telescope Live ( Chile ); Image Processing & Copyright: Bernard MillerMu Cephei October 12, 2023 · Copyrighted

Mu Cephei

Image Credit & Copyright: David CruzHydrogen Clouds of M33 October 13, 2023 · Copyrighted

Hydrogen Clouds of M33

Image Credit & Copyright: Reinhold WittichCircular Sun Halo October 14, 2023 · Copyrighted

Circular Sun Halo

Image Credit & Copyright: Vincenzo MirabellaA driveway is shown with a car at the top of the frame but a series of shadows across the rest of the frame. A close inspection of these shadows shows that they are frequently small images of an ongoing partial solar eclipse. Please see the October 15, 2023 · Copyrighted

An Eclipse Tree

Image Credit & Copyright: Shawn WyreAn annular solar eclipse appears in the background with the dark Moon appearing completely internal to the bright Sun. In the foreground is a ridge with the silhouettes of two people, one standing, and one kneeling. Please see the explanati October 16, 2023 · Copyrighted

Eclipse Rings

Image Credit & Copyright: Jerry Zhang (left), Baolong Chen (photographer) & Amber Zhang (right)An orange elliptical ring is shown that is a disk of gas and dust around the star PDS 70. In the center of the disk is a fuzzy spot and near the inner right edge of the disk is another fuzzy spot. Please see the explanation for more detaile October 17, 2023

PDS 70: Disk, Planets, and Moons

Image Credit: ALMA ( ESO / NAOJ / NRAO ); M. Benisty et al.Brown glowing dust appears to the left of the blue and red filamentary gas that composes the western edge of the Veil Nebula, a supernova remnant. Please see the explanation for more detailed information. October 18, 2023 · Copyrighted

Dust and the Western Veil Nebula

Image Credit & Copyright: Jiang WuA Sunrise at Sunset Point October 19, 2023 · Copyrighted

A Sunrise at Sunset Point

Image Credit & Copyright: Martin RatcliffeGalaxies and a Comet October 20, 2023 · Copyrighted

Galaxies and a Comet

Image Credit & Copyright: Dan BartlettQuarter Moons October 21, 2023 · Copyrighted

Quarter Moons

Image Credit & Copyright: Marcella Giulia PaceA landscape is pictured with snow and a line of evergreen trees. In the sky is a field of stars but also notable green aurora. The largest aurora appears similar in form to a Halloween ghost, Please see the explanation for more detailed inf October 22, 2023 · Copyrighted

Ghost Aurora over Canada

Image Credit & Copyright: Yuichi Takasaka , TWANJupiter's moon Io is shown as photogaphred recently by NASA's passing Juno spacecraft. The moon is nearly half- lit by the distant Sun and shows a complex surface including the colors yellow, orange, and dark brown. Near the top, the plume October 23, 2023 · Copyrighted

Moon Io from Spacecraft Juno

Image Credit: NASA , JPL-Caltech , SwRI , MSSS ; Processing & Copyright: Ted Stryk & Fernando García NavarroThree large galaxies are shown, the rightmost two in collision. The galaxy on the far right is a large spiral galaxy with one arm connected to an unusual polar galaxy on the left. The smaller galaxy on the far left is thought to be far in t October 24, 2023

Arp 87: Merging Galaxies from Hubble

Image Credit: NASA , ESA , Hubble ; Processing: Harshwardhan PathakGone in 60 Seconds: A Green Flash Sunset October 25, 2023 · Video · Copyrighted

Gone in 60 Seconds: A Green Flash Sunset

Video Credit & Copyright: Tengyu CaiOrionids in Taurus October 26, 2023 · Copyrighted

Orionids in Taurus

Image Credit & Copyright: David CortnerEncke and the Tadpoles October 27, 2023 · Copyrighted

Encke and the Tadpoles

Image Credit & Copyright: Dan BartlettThe Ghosts of Gamma Cas October 28, 2023 · Copyrighted

The Ghosts of Gamma Cas

Image Credit & Copyright: Guillaume Gruntz , Jean-François BaxTwo images of a partial lunar eclipse are shown. On the left the image is overexposed everywhere except the bottom right where the eclipsed part of the Moon is visible. On the right image most of the image is normally exposed but the bottom October 29, 2023 · Copyrighted

A Partial Lunar Eclipse

Image Credit & Copyright: Orazio MezzioA dark starfield is shown with several brown nebulas. Many of the nebulas appear to have unusual shapes, with one possibly resembling a bat, while other may resemble people. Please see the explanation for more detailed information. October 30, 2023 · Copyrighted

Reflections of the Ghost Nebula

Image Credit & Copyright: Bogdan JarzynaThe center of the Wizard Nebula is shown featuring gas glowing in red and dust reflecting in blue. Dark dust pillars are seen throughout the image. Please see the explanation for more detailed information. October 31, 2023 · Copyrighted

Halloween and the Wizard Nebula

Image Credit & Copyright: Richard McInnis

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