2025 November 20

Alnitak, Alnilam, Mintaka
 * Image Credit & Copyright: Aygen Erkaslan

Explanation: 
Alnitak, Alnilam, and Mintaka are the bright bluish stars from east to west (upper right to lower left) along the diagonal in this cosmic vista. Otherwise known as the Belt of Orion, these three blue supergiant stars are hotter and much more massive than the Sun. They lie from 700 to 2,000 light-years away, born of Orion's well-studied interstellar clouds. In fact, clouds of gas and dust adrift in this region have some surprisingly familiar shapes, including the dark Horsehead Nebula and Flame Nebula near Alnitak at the upper right. The famous Orion Nebula itself is off the right edge of this colorful starfield. The telescopic frame spans almost 4 degrees on the sky. 

Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
NASA Official: Amber Straughn Specific rights apply.
NASA Web Privacy, Accessibility, Notices;
A service of: ASD at NASA / GSFC,
NASA Science Activation
& Michigan Tech. U.
2025 November 20 Alnitak, Alnilam, Mintaka * Image Credit & Copyright: Aygen Erkaslan Explanation: Alnitak, Alnilam, and Mintaka are the bright bluish stars from east to west (upper right to lower left) along the diagonal in this cosmic vista. Otherwise known as the Belt of Orion, these three blue supergiant stars are hotter and much more massive than the Sun. They lie from 700 to 2,000 light-years away, born of Orion's well-studied interstellar clouds. In fact, clouds of gas and dust adrift in this region have some surprisingly familiar shapes, including the dark Horsehead Nebula and Flame Nebula near Alnitak at the upper right. The famous Orion Nebula itself is off the right edge of this colorful starfield. The telescopic frame spans almost 4 degrees on the sky. Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP) NASA Official: Amber Straughn Specific rights apply. NASA Web Privacy, Accessibility, Notices; A service of: ASD at NASA / GSFC, NASA Science Activation & Michigan Tech. U.
2025 November 20

Alnitak, Alnilam, Mintaka
 * Image Credit & Copyright: Aygen Erkaslan

Explanation: 
Alnitak, Alnilam, and Mintaka are the bright bluish stars from east to west (upper right to lower left) along the diagonal in this cosmic vista. Otherwise known as the Belt of Orion, these three blue supergiant stars are hotter and much more massive than the Sun. They lie from 700 to 2,000 light-years away, born of Orion's well-studied interstellar clouds. In fact, clouds of gas and dust adrift in this region have some surprisingly familiar shapes, including the dark Horsehead Nebula and Flame Nebula near Alnitak at the upper right. The famous Orion Nebula itself is off the right edge of this colorful starfield. The telescopic frame spans almost 4 degrees on the sky. 

Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
NASA Official: Amber Straughn Specific rights apply.
NASA Web Privacy, Accessibility, Notices;
A service of: ASD at NASA / GSFC,
NASA Science Activation
& Michigan Tech. U.
2025 November 20 Alnitak, Alnilam, Mintaka * Image Credit & Copyright: Aygen Erkaslan Explanation: Alnitak, Alnilam, and Mintaka are the bright bluish stars from east to west (upper right to lower left) along the diagonal in this cosmic vista. Otherwise known as the Belt of Orion, these three blue supergiant stars are hotter and much more massive than the Sun. They lie from 700 to 2,000 light-years away, born of Orion's well-studied interstellar clouds. In fact, clouds of gas and dust adrift in this region have some surprisingly familiar shapes, including the dark Horsehead Nebula and Flame Nebula near Alnitak at the upper right. The famous Orion Nebula itself is off the right edge of this colorful starfield. The telescopic frame spans almost 4 degrees on the sky. Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP) NASA Official: Amber Straughn Specific rights apply. NASA Web Privacy, Accessibility, Notices; A service of: ASD at NASA / GSFC, NASA Science Activation & Michigan Tech. U.
nullagent boosted
Starless image of “God’s Hand” (the stars were extracted using the program Starnet). Only the smoky, hazy shapes of the luminous gas clouds, as well as the glow of the distant spiral galaxy, appear against the darkness. The effect is painterly and surreal.
Starless image of “God’s Hand” (the stars were extracted using the program Starnet). Only the smoky, hazy shapes of the luminous gas clouds, as well as the glow of the distant spiral galaxy, appear against the darkness. The effect is painterly and surreal.
Image of the star-forming region CG 4 (“God’s Hand”) — 1,300 light years away — which appears as a hand on an outstretched arm (or perhaps an open-mouthed creature with a long neck) extending from a luminous gas cloud in hues of pink and purple, in a field of hazy gases and multicolored stars. The “hand” or “mouth” appears to reach out to seize or devour a small spiral galaxy — ESO 257-19, which in reality is over 100 million light years further away. (H/t Wikipedia)

Data taken from the Amateur Astronomers Association’s Gateway Remote Telescope. Processed and edited by me using Siril, Starnet, and GIMP, with final edits in Snapseed.
Image of the star-forming region CG 4 (“God’s Hand”) — 1,300 light years away — which appears as a hand on an outstretched arm (or perhaps an open-mouthed creature with a long neck) extending from a luminous gas cloud in hues of pink and purple, in a field of hazy gases and multicolored stars. The “hand” or “mouth” appears to reach out to seize or devour a small spiral galaxy — ESO 257-19, which in reality is over 100 million light years further away. (H/t Wikipedia) Data taken from the Amateur Astronomers Association’s Gateway Remote Telescope. Processed and edited by me using Siril, Starnet, and GIMP, with final edits in Snapseed.
Annotated Hi-Res image for previews post.

The featured image shows a dark nebula complex involving thick dust appearing brown and making a big

Chamaeleon Dark Nebulas
 * Image Credit & Copyright: Xinran Li & Houbo Zhou

Explanation: 
Sometimes the dark dust of interstellar space has an angular elegance. Such is the case toward the far-south constellation of Chamaeleon. Normally too faint to see, dark dust is best known for blocking visible light from stars and galaxies behind it. In this 11.4-hour exposure, however, the dust is seen mostly in light of its own, with its strong red and near-infrared colors creating a brown hue. Contrastingly blue, a bright star Beta Chamaeleontis is visible on the upper right of the V, with the dust that surrounds it preferentially reflecting blue light from its primarily blue-white color. All of the pictured stars and dust occur in our own Milky Way Galaxy with one notable exception: a white spot just below Beta Chamaeleontis is the galaxy IC 3104 which lies far in the distance. Interstellar dust is mostly created in the cool atmospheres of giant stars and dispersed into space by stellar light, stellar winds, and stellar explosions such as supernovas.
Annotated Hi-Res image for previews post. The featured image shows a dark nebula complex involving thick dust appearing brown and making a big Chamaeleon Dark Nebulas * Image Credit & Copyright: Xinran Li & Houbo Zhou Explanation: Sometimes the dark dust of interstellar space has an angular elegance. Such is the case toward the far-south constellation of Chamaeleon. Normally too faint to see, dark dust is best known for blocking visible light from stars and galaxies behind it. In this 11.4-hour exposure, however, the dust is seen mostly in light of its own, with its strong red and near-infrared colors creating a brown hue. Contrastingly blue, a bright star Beta Chamaeleontis is visible on the upper right of the V, with the dust that surrounds it preferentially reflecting blue light from its primarily blue-white color. All of the pictured stars and dust occur in our own Milky Way Galaxy with one notable exception: a white spot just below Beta Chamaeleontis is the galaxy IC 3104 which lies far in the distance. Interstellar dust is mostly created in the cool atmospheres of giant stars and dispersed into space by stellar light, stellar winds, and stellar explosions such as supernovas.
2025 November 19
The featured image shows a dark nebula complex involving thick dust appearing brown and making a big

Chamaeleon Dark Nebulas
 * Image Credit & Copyright: Xinran Li & Houbo Zhou

Explanation: 
Sometimes the dark dust of interstellar space has an angular elegance. Such is the case toward the far-south constellation of Chamaeleon. Normally too faint to see, dark dust is best known for blocking visible light from stars and galaxies behind it. In this 11.4-hour exposure, however, the dust is seen mostly in light of its own, with its strong red and near-infrared colors creating a brown hue. Contrastingly blue, a bright star Beta Chamaeleontis is visible on the upper right of the V, with the dust that surrounds it preferentially reflecting blue light from its primarily blue-white color. All of the pictured stars and dust occur in our own Milky Way Galaxy with one notable exception: a white spot just below Beta Chamaeleontis is the galaxy IC 3104 which lies far in the distance. Interstellar dust is mostly created in the cool atmospheres of giant stars and dispersed into space by stellar light, stellar winds, and stellar explosions such as supernovas. 

Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
NASA Official: Amber Straughn Specific rights apply.
NASA Web Privacy, Accessibility, Notices;
A service of: ASD at NASA / GSFC,
NASA Science Activation
& Michigan Tech. U.
2025 November 19 The featured image shows a dark nebula complex involving thick dust appearing brown and making a big Chamaeleon Dark Nebulas * Image Credit & Copyright: Xinran Li & Houbo Zhou Explanation: Sometimes the dark dust of interstellar space has an angular elegance. Such is the case toward the far-south constellation of Chamaeleon. Normally too faint to see, dark dust is best known for blocking visible light from stars and galaxies behind it. In this 11.4-hour exposure, however, the dust is seen mostly in light of its own, with its strong red and near-infrared colors creating a brown hue. Contrastingly blue, a bright star Beta Chamaeleontis is visible on the upper right of the V, with the dust that surrounds it preferentially reflecting blue light from its primarily blue-white color. All of the pictured stars and dust occur in our own Milky Way Galaxy with one notable exception: a white spot just below Beta Chamaeleontis is the galaxy IC 3104 which lies far in the distance. Interstellar dust is mostly created in the cool atmospheres of giant stars and dispersed into space by stellar light, stellar winds, and stellar explosions such as supernovas. Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP) NASA Official: Amber Straughn Specific rights apply. NASA Web Privacy, Accessibility, Notices; A service of: ASD at NASA / GSFC, NASA Science Activation & Michigan Tech. U.
Starless image of “God’s Hand” (the stars were extracted using the program Starnet). Only the smoky, hazy shapes of the luminous gas clouds, as well as the glow of the distant spiral galaxy, appear against the darkness. The effect is painterly and surreal.
Starless image of “God’s Hand” (the stars were extracted using the program Starnet). Only the smoky, hazy shapes of the luminous gas clouds, as well as the glow of the distant spiral galaxy, appear against the darkness. The effect is painterly and surreal.
Image of the star-forming region CG 4 (“God’s Hand”) — 1,300 light years away — which appears as a hand on an outstretched arm (or perhaps an open-mouthed creature with a long neck) extending from a luminous gas cloud in hues of pink and purple, in a field of hazy gases and multicolored stars. The “hand” or “mouth” appears to reach out to seize or devour a small spiral galaxy — ESO 257-19, which in reality is over 100 million light years further away. (H/t Wikipedia)

Data taken from the Amateur Astronomers Association’s Gateway Remote Telescope. Processed and edited by me using Siril, Starnet, and GIMP, with final edits in Snapseed.
Image of the star-forming region CG 4 (“God’s Hand”) — 1,300 light years away — which appears as a hand on an outstretched arm (or perhaps an open-mouthed creature with a long neck) extending from a luminous gas cloud in hues of pink and purple, in a field of hazy gases and multicolored stars. The “hand” or “mouth” appears to reach out to seize or devour a small spiral galaxy — ESO 257-19, which in reality is over 100 million light years further away. (H/t Wikipedia) Data taken from the Amateur Astronomers Association’s Gateway Remote Telescope. Processed and edited by me using Siril, Starnet, and GIMP, with final edits in Snapseed.
Resembling an interstellar Frisbee, the dark feature in these two Hubble images is a protoplanetary disk of dust seen edge-on around a newborn star in M42. The two images show the disk through two different sets of filters: one to probe the disk’s chemical composition (left) and another to reduce the brightness of the nebula, revealing brighter regions above and below the disk that betray the presence of the star (right). Because the disk is edge-on, its star is largely hidden, but the disk may be an embryonic planetary system in the making. Our solar system probably formed out of such a disk 4.5 billion years ago.

CREDIT
Mark McCaughrean (Max-Planck-Institute for Astronomy), C. Robert O'Dell (Rice University) and NASA
Resembling an interstellar Frisbee, the dark feature in these two Hubble images is a protoplanetary disk of dust seen edge-on around a newborn star in M42. The two images show the disk through two different sets of filters: one to probe the disk’s chemical composition (left) and another to reduce the brightness of the nebula, revealing brighter regions above and below the disk that betray the presence of the star (right). Because the disk is edge-on, its star is largely hidden, but the disk may be an embryonic planetary system in the making. Our solar system probably formed out of such a disk 4.5 billion years ago. CREDIT Mark McCaughrean (Max-Planck-Institute for Astronomy), C. Robert O'Dell (Rice University) and NASA
Appearing like glistening precious stones, M42’s Trapezium cluster, named for the trapezoidal arrangement of its central massive stars, is seen in this infrared Hubble image. All of the members of the Trapezium were born together in this hotbed of star formation.

CREDIT
K.L. Luhman (Harvard-Smithsonian Center for Astrophysics, Cambridge, Mass.); and G. Schneider, E. Young, G. Rieke, A. Cotera, H. Chen, M. Rieke, R. Thompson (Steward Observatory, University of Arizona, Tucson, Ariz.) and NASA/ESA
Appearing like glistening precious stones, M42’s Trapezium cluster, named for the trapezoidal arrangement of its central massive stars, is seen in this infrared Hubble image. All of the members of the Trapezium were born together in this hotbed of star formation. CREDIT K.L. Luhman (Harvard-Smithsonian Center for Astrophysics, Cambridge, Mass.); and G. Schneider, E. Young, G. Rieke, A. Cotera, H. Chen, M. Rieke, R. Thompson (Steward Observatory, University of Arizona, Tucson, Ariz.) and NASA/ESA
This stunning Hubble image offers the sharpest view of the Orion Nebula ever obtained. Created using 520 different Hubble exposures taken in multiple wavelengths of light, this mosaic contains over one billion pixels. Hubble imaged most of the nebula, but ground-based images were used to fill in the gaps in its observations. The orange color in the image can be attributed to hydrogen, green represents oxygen, and the red represents both sulfur and observations made in infrared light.

Credit
NASA, ESA, M. Robberto (Space Telescope Science Institute/ESA) and the Hubble Space Telescope Orion Treasury Project Team
This stunning Hubble image offers the sharpest view of the Orion Nebula ever obtained. Created using 520 different Hubble exposures taken in multiple wavelengths of light, this mosaic contains over one billion pixels. Hubble imaged most of the nebula, but ground-based images were used to fill in the gaps in its observations. The orange color in the image can be attributed to hydrogen, green represents oxygen, and the red represents both sulfur and observations made in infrared light. Credit NASA, ESA, M. Robberto (Space Telescope Science Institute/ESA) and the Hubble Space Telescope Orion Treasury Project Team
Probing deep within a neighborhood stellar nursery, NASA's Hubble Space Telescope uncovered a swarm of newborn brown dwarfs. The orbiting observatory's near-infrared camera revealed about 50 of these objects throughout the Orion Nebula's Trapezium cluster [image at right], about 1,500 light-years from Earth. Appearing like glistening precious stones surrounding a setting of sparkling diamonds, more than 300 fledgling stars and brown dwarfs surround the brightest, most massive stars [center of picture] in Hubble's view of the Trapezium cluster's central region. The brown dwarfs are too dim to be seen in an image taken by the Hubble telescope's visible-light camera [picture at left].

[...]
The near-infrared image was taken Jan. 17, 1998. Two near-infrared filters were used to obtain information on the colors of the stars at two wavelengths (1.1 and 1.6 microns). The Trapezium picture is 1 light-year across. This composite image was made from a "mosaic" of nine separate, but adjoining images. In this false-color image, blue corresponds to warmer, more massive stars, and red to cooler, less massive stars and brown dwarfs, and stars that are heavily obscured by dust.

The visible-light data were taken in 1994 and 1995.

Credit
 * Near-infrared image: NASA; K.L. Luhman and G. Schneider, E. Young, G. Rieke, A. Cotera, H. Chen, M. Rieke, R. Thompson 
 * Visible-light image: NASA, C.R. O'Dell and S.K. Wong (Rice University)
Probing deep within a neighborhood stellar nursery, NASA's Hubble Space Telescope uncovered a swarm of newborn brown dwarfs. The orbiting observatory's near-infrared camera revealed about 50 of these objects throughout the Orion Nebula's Trapezium cluster [image at right], about 1,500 light-years from Earth. Appearing like glistening precious stones surrounding a setting of sparkling diamonds, more than 300 fledgling stars and brown dwarfs surround the brightest, most massive stars [center of picture] in Hubble's view of the Trapezium cluster's central region. The brown dwarfs are too dim to be seen in an image taken by the Hubble telescope's visible-light camera [picture at left]. [...] The near-infrared image was taken Jan. 17, 1998. Two near-infrared filters were used to obtain information on the colors of the stars at two wavelengths (1.1 and 1.6 microns). The Trapezium picture is 1 light-year across. This composite image was made from a "mosaic" of nine separate, but adjoining images. In this false-color image, blue corresponds to warmer, more massive stars, and red to cooler, less massive stars and brown dwarfs, and stars that are heavily obscured by dust. The visible-light data were taken in 1994 and 1995. Credit * Near-infrared image: NASA; K.L. Luhman and G. Schneider, E. Young, G. Rieke, A. Cotera, H. Chen, M. Rieke, R. Thompson * Visible-light image: NASA, C.R. O'Dell and S.K. Wong (Rice University)
sef boosted
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Three vertically stacked astronomical photographs compare the same section of The Carina Nebula (catalogued as NGC 3372), each labeled with the telescope or observatory that captured it.

Top: Labeled "La Silla Observatory," the nebula appears in muted brownish-orange tones, with many stars visible but slightly blurred. A red rectangle highlights a small protruding formation at the nebula’s edge, and a zoomed-in circular inset to the right shows this area with low detail and a soft, hazy outline.

Middle: Labeled "Hubble Telescope," the nebula displays more vivid colors, including blues, purples, and reds. The same protruding formation is highlighted by a red rectangle, and the zoomed-in inset shows more distinct edges and texture compared to the La Silla image.

Bottom: Labeled "James Webb," the nebula appears in sharper detail with golden-brown ridges against a deep blue star-filled background. The same protrusion is marked with a red rectangle, and the zoomed-in inset shows the most clarity, revealing fine structure and a greater number of small stars in the background.

Sources: NASA/ESA James Webb Space Telescope; Hubble Space Telescope; ESO La Silla Observatory
Three vertically stacked astronomical photographs compare the same section of The Carina Nebula (catalogued as NGC 3372), each labeled with the telescope or observatory that captured it. Top: Labeled "La Silla Observatory," the nebula appears in muted brownish-orange tones, with many stars visible but slightly blurred. A red rectangle highlights a small protruding formation at the nebula’s edge, and a zoomed-in circular inset to the right shows this area with low detail and a soft, hazy outline. Middle: Labeled "Hubble Telescope," the nebula displays more vivid colors, including blues, purples, and reds. The same protruding formation is highlighted by a red rectangle, and the zoomed-in inset shows more distinct edges and texture compared to the La Silla image. Bottom: Labeled "James Webb," the nebula appears in sharper detail with golden-brown ridges against a deep blue star-filled background. The same protrusion is marked with a red rectangle, and the zoomed-in inset shows the most clarity, revealing fine structure and a greater number of small stars in the background. Sources: NASA/ESA James Webb Space Telescope; Hubble Space Telescope; ESO La Silla Observatory