Image 95 of 250
The Milky Way, Morning Zodiacal Light and SAR Arc Panorama
Milky Way, Zodiacal Light and SAR Arc (Panorama).jpg
This panorama takes in a rare confluence of skyglows in a colourful dawn sky.
This was the pre-dawn scene from southeastern Arizona on the morning of October 11, 2024 that frames a group of skyglows and phenomena — from the atmosphere, to interplanetary space, to interstellar space:
— At left is the magenta glow of a red SAR (Stable Auroral Red) arc across the northern sky, generated in the high atmosphere by the massive Kp8 geomagnetic storm this night (October 10/11, 2024) that brought auroras to the southern US.
— At left of centre is the white pyramid-shaped glow of Zodiacal Light, created by sunlight reflecting off meteoric dust particles in the inner solar system, so from out in interplanetary space, not in our atmosphere.
— At right is the band of the Milky Way, created by distant stars in our Galaxy, in this case from the spiral arms that lie in the direction opposite the galactic centre, toward Orion. So this is interstellar light!
— At centre is a short angled column of light on the horizon that might be the tail of Comet Tsuchinshan-ATLAS still poking above the horizon at this time, October 11, 2024, even though the comet head itself had passed to the other side of the Sun to begin appearing in the evening sky the next night. However, there are other blue and magenta bands of colour in that area that could be airglow or fragments of aurora.
— The oncoming morning twilight adds its own tints, particularly in making the hgh-altitude SAR arc more magenta than usuual (by adding blue sunlight) for SARs which are normally deep red. They lie at some 400 km altitude.
The 120° panorama extends from the Big Dipper in the northeast (at left) to Orion in the southeast (at right). Orion is greatly distorted by the panorama projection. Below it is the brightest star in the night sky, Sirius in Canis Major, while below it skimming the southern horizon is the second brightest star in the night sky, Canopus in Carina, just visible from this latitude
This was the pre-dawn scene from southeastern Arizona on the morning of October 11, 2024 that frames a group of skyglows and phenomena — from the atmosphere, to interplanetary space, to interstellar space:
— At left is the magenta glow of a red SAR (Stable Auroral Red) arc across the northern sky, generated in the high atmosphere by the massive Kp8 geomagnetic storm this night (October 10/11, 2024) that brought auroras to the southern US.
— At left of centre is the white pyramid-shaped glow of Zodiacal Light, created by sunlight reflecting off meteoric dust particles in the inner solar system, so from out in interplanetary space, not in our atmosphere.
— At right is the band of the Milky Way, created by distant stars in our Galaxy, in this case from the spiral arms that lie in the direction opposite the galactic centre, toward Orion. So this is interstellar light!
— At centre is a short angled column of light on the horizon that might be the tail of Comet Tsuchinshan-ATLAS still poking above the horizon at this time, October 11, 2024, even though the comet head itself had passed to the other side of the Sun to begin appearing in the evening sky the next night. However, there are other blue and magenta bands of colour in that area that could be airglow or fragments of aurora.
— The oncoming morning twilight adds its own tints, particularly in making the hgh-altitude SAR arc more magenta than usuual (by adding blue sunlight) for SARs which are normally deep red. They lie at some 400 km altitude.
The 120° panorama extends from the Big Dipper in the northeast (at left) to Orion in the southeast (at right). Orion is greatly distorted by the panorama projection. Below it is the brightest star in the night sky, Sirius in Canis Major, while below it skimming the southern horizon is the second brightest star in the night sky, Canopus in Carina, just visible from this latitude
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- © Alan Dyer/AmazingSky.com
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