NASA's Astronomy Picture of the Day
To find and view past APODs, tap here:
t.me/apodQA/3
NASA's APOD presence in Telegram
🌐apod.nasa.gov
Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
t.me/apodQA/3
NASA's APOD presence in Telegram
🌐apod.nasa.gov
Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
TGlist रेटिंग
0
0
प्रकारसार्वजनिक
सत्यापन
सत्यापितविश्वसनीयता
अविश्वसनीयस्थान
भाषाअन्य
चैनल निर्माण की तिथिNov 26, 2024
TGlist में जोड़ा गया
Nov 26, 2024संलग्न समूह
APOD's Discussion group
182
रिकॉर्ड
29.01.202523:59
24.4K
सदस्य24.12.202417:34
18
उद्धरण सूचकांक28.01.202510:09
3.1K
प्रति पोस्ट औसत दृश्य28.01.202521:07
3.1K
प्रति विज्ञापन पोस्ट औसत दृश्य27.01.202523:59
3.70%
ER28.01.202510:09
12.66%
ERR
29.01.202505:29
2025 January 29
Dust Shells around WR 140 from Webb
Image Credit: NASA, ESA, CSA, STScI, E. Lieb (U. Denver), R. Lau (NSF NOIRLab), J. Hoffman (U. Denver)
What are those strange rings? Rich in dust, the rings are likely 3D shells -- but how they were created remains a topic of research. Where they were created is well known: in a binary star system that lies about 6,000 light years away toward the constellation of the Swan (Cygnus) -- a system dominated by the Wolf-Rayet star WR 140. Wolf-Rayet stars are massive, bright, and known for their tumultuous winds. They are also known for creating and dispersing heavy elements such as carbon, which is a building block of interstellar dust. The other star in the binary is also bright and massive -- but not as active. The two great stars joust in an oblong orbit as they approach each other about every eight years. When at closest approach, the X-ray emission from the system increases, as, apparently, does the dust expelled into space -- creating another shell. The featured infrared image by the Webb Space Telescope resolves greater details and more dust shells than ever before. Images taken over consecutive years show the shells moving outward.
🔗Discuss 🎞High Resolution
Dust Shells around WR 140 from Webb
Image Credit: NASA, ESA, CSA, STScI, E. Lieb (U. Denver), R. Lau (NSF NOIRLab), J. Hoffman (U. Denver)
What are those strange rings? Rich in dust, the rings are likely 3D shells -- but how they were created remains a topic of research. Where they were created is well known: in a binary star system that lies about 6,000 light years away toward the constellation of the Swan (Cygnus) -- a system dominated by the Wolf-Rayet star WR 140. Wolf-Rayet stars are massive, bright, and known for their tumultuous winds. They are also known for creating and dispersing heavy elements such as carbon, which is a building block of interstellar dust. The other star in the binary is also bright and massive -- but not as active. The two great stars joust in an oblong orbit as they approach each other about every eight years. When at closest approach, the X-ray emission from the system increases, as, apparently, does the dust expelled into space -- creating another shell. The featured infrared image by the Webb Space Telescope resolves greater details and more dust shells than ever before. Images taken over consecutive years show the shells moving outward.
🔗Discuss 🎞High Resolution
28.01.202505:32
2025 January 28
Comet G3 ATLAS over Uruguay
Image Credit & Copyright: Mauricio Salazar
Comets can be huge. When far from the Sun, a comet's size usually refers to its hard nucleus of ice and rock, which typically spans a few kilometers -- smaller than even a small moon. When nearing the Sun, however, this nucleus can eject dust and gas and leave a thin tail that can spread to an enormous length -- even greater than the distance between the Earth and the Sun. Pictured, C/2024 G3 (ATLAS) sports a tail of sunlight-reflecting dust and glowing gas that spans several times the apparent size of a full moon, appearing even larger on long duration camera images than to the unaided eye. The featured image shows impressive Comet ATLAS over trees and a grass field in Sierras de Mahoma, San Jose, Uruguay about a week ago. After being prominent in the sunset skies of Earth's southern hemisphere, Comet G3 ATLAS is now fading as it moves away from the Sun, making its impressive tails increasingly hard to see.
🔗Discuss 🎞High Resolution
Comet G3 ATLAS over Uruguay
Image Credit & Copyright: Mauricio Salazar
Comets can be huge. When far from the Sun, a comet's size usually refers to its hard nucleus of ice and rock, which typically spans a few kilometers -- smaller than even a small moon. When nearing the Sun, however, this nucleus can eject dust and gas and leave a thin tail that can spread to an enormous length -- even greater than the distance between the Earth and the Sun. Pictured, C/2024 G3 (ATLAS) sports a tail of sunlight-reflecting dust and glowing gas that spans several times the apparent size of a full moon, appearing even larger on long duration camera images than to the unaided eye. The featured image shows impressive Comet ATLAS over trees and a grass field in Sierras de Mahoma, San Jose, Uruguay about a week ago. After being prominent in the sunset skies of Earth's southern hemisphere, Comet G3 ATLAS is now fading as it moves away from the Sun, making its impressive tails increasingly hard to see.
🔗Discuss 🎞High Resolution
27.01.202505:33
2025 January 27
Pleiades over Half Dome
Image Credit & Copyright: Dheera Venkatraman
Stars come in bunches. The most famous bunch of stars on the sky is the Pleiades, a bright cluster that can be easily seen with the unaided eye. The Pleiades lies only about 450 light years away, formed about 100 million years ago, and will likely last about another 250 million years. Our Sun was likely born in a star cluster, but now, being about 4.5 billion years old, its stellar birth companions have long since dispersed. The Pleiades star cluster is pictured over Half Dome, a famous rock structure in Yosemite National Park in California, USA. The featured image is a composite of 28 foreground exposures and 174 images of the stellar background, all taken from the same location and by the same camera on the same night in October 2019. After calculating the timing of a future juxtaposition of the Pleiades and Half Dome, the astrophotrographer was unexpectedly rewarded by an electrical blackout, making the background sky unusually dark.
🔗Discuss 🎞High Resolution
Pleiades over Half Dome
Image Credit & Copyright: Dheera Venkatraman
Stars come in bunches. The most famous bunch of stars on the sky is the Pleiades, a bright cluster that can be easily seen with the unaided eye. The Pleiades lies only about 450 light years away, formed about 100 million years ago, and will likely last about another 250 million years. Our Sun was likely born in a star cluster, but now, being about 4.5 billion years old, its stellar birth companions have long since dispersed. The Pleiades star cluster is pictured over Half Dome, a famous rock structure in Yosemite National Park in California, USA. The featured image is a composite of 28 foreground exposures and 174 images of the stellar background, all taken from the same location and by the same camera on the same night in October 2019. After calculating the timing of a future juxtaposition of the Pleiades and Half Dome, the astrophotrographer was unexpectedly rewarded by an electrical blackout, making the background sky unusually dark.
🔗Discuss 🎞High Resolution
26.01.202505:31
2025 January 26
The Many Tails of Comet G3 ATLAS
Image Credit & Copyright: Martin Mašek (FZU, Czech Academy of Sciences) & Jakub Kuřák
Why does this comet have so many tails? C/2024 G3 (ATLAS) has developed several long and intricate tails visible from Earth's southern hemisphere over the past two weeks. Many observers reported seeing the impressive comet without any optical aid above the western horizon just after sunset. At least six different tails appear in the featured image captured five days ago from the dark skies above Paranal Observatory in Chile. One possible cause for the multiple tails is dust and gas being expelled from the comet's rotating nucleus. The outward push of the Sun's complex solar wind may also play a role. The huge iceberg-like nucleus of Comet ATLAS appears to have broken up near its closest approach to the Sun two weeks ago. Unfortunately, Comet ATLAS and its tails are expected to fade significantly over the coming weeks.
🔗Discuss 🎞High Resolution
The Many Tails of Comet G3 ATLAS
Image Credit & Copyright: Martin Mašek (FZU, Czech Academy of Sciences) & Jakub Kuřák
Why does this comet have so many tails? C/2024 G3 (ATLAS) has developed several long and intricate tails visible from Earth's southern hemisphere over the past two weeks. Many observers reported seeing the impressive comet without any optical aid above the western horizon just after sunset. At least six different tails appear in the featured image captured five days ago from the dark skies above Paranal Observatory in Chile. One possible cause for the multiple tails is dust and gas being expelled from the comet's rotating nucleus. The outward push of the Sun's complex solar wind may also play a role. The huge iceberg-like nucleus of Comet ATLAS appears to have broken up near its closest approach to the Sun two weeks ago. Unfortunately, Comet ATLAS and its tails are expected to fade significantly over the coming weeks.
🔗Discuss 🎞High Resolution
25.01.202505:33
2025 January 25
Stardust in the Perseus Molecular Cloud
Image Credit & Copyright: Jeff Schilling
Clouds of stardust drift through this deep skyscape, across the Perseus molecular cloud some 850 light-years away. Dusty nebulae reflecting light from embedded young stars stand out in the nearly 4 degree wide field of view. With a characteristic bluish color reflection nebula NGC 1333 is prominent near center. Hints of contrasting red emission from Herbig-Haro objects, the jets and shocked glowing gas emanating from recently formed stars, are scattered across the dusty expanse. While many stars are forming in the molecular cloud, most are obscured at visible wavelengths by the pervasive dust. The chaotic environment surrounding NGC 1333 may be similar to one in which our own Sun formed over 4.5 billion years ago. At the estimated distance of the Perseus molecular cloud, this cosmic scene would span about 80 light-years.
🔗Discuss 🎞High Resolution
Stardust in the Perseus Molecular Cloud
Image Credit & Copyright: Jeff Schilling
Clouds of stardust drift through this deep skyscape, across the Perseus molecular cloud some 850 light-years away. Dusty nebulae reflecting light from embedded young stars stand out in the nearly 4 degree wide field of view. With a characteristic bluish color reflection nebula NGC 1333 is prominent near center. Hints of contrasting red emission from Herbig-Haro objects, the jets and shocked glowing gas emanating from recently formed stars, are scattered across the dusty expanse. While many stars are forming in the molecular cloud, most are obscured at visible wavelengths by the pervasive dust. The chaotic environment surrounding NGC 1333 may be similar to one in which our own Sun formed over 4.5 billion years ago. At the estimated distance of the Perseus molecular cloud, this cosmic scene would span about 80 light-years.
🔗Discuss 🎞High Resolution
अधिक कार्यक्षमता अनलॉक करने के लिए लॉगिन करें।
