Reposted by Med Amine Hamidi
Object P12hxMW on the PCCP, MBA-type orbit but showing a very clear tail at PA ~270. Possible impact event or spin up. Images from G96 2025 11 29UT. #cometwatch #comet #NEOCP 🔭
November 30, 2025 at 7:30 PM
Object P12hxMW on the PCCP, MBA-type orbit but showing a very clear tail at PA ~270. Possible impact event or spin up. Images from G96 2025 11 29UT. #cometwatch #comet #NEOCP 🔭
Reposted by Med Amine Hamidi
November 29, 2025 at 3:24 PM
Reposted by Med Amine Hamidi
Comet C/2025 K1 (ATLAS)
2025 Nov. 27.30 UT m1=9.5: Tri-G Dia.=3.3' Tail=&36' in PA 233 deg... [T68] 0.28-m f/2.2 RASA astrograph + CMOS... iTelescope observatory, U94 (remotely from Great Basin Desert, Beryl Junction, Utah, USA)
2025 Nov. 27.30 UT m1=9.5: Tri-G Dia.=3.3' Tail=&36' in PA 233 deg... [T68] 0.28-m f/2.2 RASA astrograph + CMOS... iTelescope observatory, U94 (remotely from Great Basin Desert, Beryl Junction, Utah, USA)
November 29, 2025 at 6:03 PM
Comet C/2025 K1 (ATLAS)
2025 Nov. 27.30 UT m1=9.5: Tri-G Dia.=3.3' Tail=&36' in PA 233 deg... [T68] 0.28-m f/2.2 RASA astrograph + CMOS... iTelescope observatory, U94 (remotely from Great Basin Desert, Beryl Junction, Utah, USA)
2025 Nov. 27.30 UT m1=9.5: Tri-G Dia.=3.3' Tail=&36' in PA 233 deg... [T68] 0.28-m f/2.2 RASA astrograph + CMOS... iTelescope observatory, U94 (remotely from Great Basin Desert, Beryl Junction, Utah, USA)
Reposted by Med Amine Hamidi
The most beautiful bird in the world (imo) the Common Kingfisher... #bird #birdphotography #nature #naturephotography #tranquillity #lovelife #mindfulness #nikon #nikonphotography #eastcoastkin #birdoftheday
November 29, 2025 at 5:58 AM
The most beautiful bird in the world (imo) the Common Kingfisher... #bird #birdphotography #nature #naturephotography #tranquillity #lovelife #mindfulness #nikon #nikonphotography #eastcoastkin #birdoftheday
Due to Sheikh Taqi al-Din’s incorrect prediction during the 1580 CE comet ;believing it a good omen , the Ottoman sultan saw no use for Taqi al-Din’s Istanbul observatory and, encouraged by religious scholars, had it completely demolished that year !!
November 29, 2025 at 1:44 PM
Due to Sheikh Taqi al-Din’s incorrect prediction during the 1580 CE comet ;believing it a good omen , the Ottoman sultan saw no use for Taqi al-Din’s Istanbul observatory and, encouraged by religious scholars, had it completely demolished that year !!
Reposted by Med Amine Hamidi
Deer have been walking around the farm again. They tend to munch on garden plants while totally ignoring the fact that they could walk right in to the hay shed. I wish they’d leave my rose bush alone.
November 29, 2025 at 1:21 AM
Deer have been walking around the farm again. They tend to munch on garden plants while totally ignoring the fact that they could walk right in to the hay shed. I wish they’d leave my rose bush alone.
Reposted by Med Amine Hamidi
November 28, 2025 at 2:26 PM
Reposted by Med Amine Hamidi
Portrait of a vicious killer and a very yummy meal
(Yes, I'm still struggling with the face that Lionfish are native to SE Asia).
#lionfish #underwaterphotos #macrophotography #macro #marinelife
(Yes, I'm still struggling with the face that Lionfish are native to SE Asia).
#lionfish #underwaterphotos #macrophotography #macro #marinelife
November 27, 2025 at 6:14 PM
Portrait of a vicious killer and a very yummy meal
(Yes, I'm still struggling with the face that Lionfish are native to SE Asia).
#lionfish #underwaterphotos #macrophotography #macro #marinelife
(Yes, I'm still struggling with the face that Lionfish are native to SE Asia).
#lionfish #underwaterphotos #macrophotography #macro #marinelife
Reposted by Med Amine Hamidi
Interstellar comet 3I/ATLAS
2025 Nov. 26.52 UT m1=10.0: (m2=12.6) Dia.=&3.5' Tail=21' in PA 294 deg Anti-tail=13' in PA 107 deg... [T26] 0.51-m f/3.0 Cassegrain + CMOS... T. Prystavski... iTelescope observatory, U94 (remotely from Great Basin Desert, Beryl Junction, Utah, USA)
2025 Nov. 26.52 UT m1=10.0: (m2=12.6) Dia.=&3.5' Tail=21' in PA 294 deg Anti-tail=13' in PA 107 deg... [T26] 0.51-m f/3.0 Cassegrain + CMOS... T. Prystavski... iTelescope observatory, U94 (remotely from Great Basin Desert, Beryl Junction, Utah, USA)
November 27, 2025 at 8:37 PM
Interstellar comet 3I/ATLAS
2025 Nov. 26.52 UT m1=10.0: (m2=12.6) Dia.=&3.5' Tail=21' in PA 294 deg Anti-tail=13' in PA 107 deg... [T26] 0.51-m f/3.0 Cassegrain + CMOS... T. Prystavski... iTelescope observatory, U94 (remotely from Great Basin Desert, Beryl Junction, Utah, USA)
2025 Nov. 26.52 UT m1=10.0: (m2=12.6) Dia.=&3.5' Tail=21' in PA 294 deg Anti-tail=13' in PA 107 deg... [T26] 0.51-m f/3.0 Cassegrain + CMOS... T. Prystavski... iTelescope observatory, U94 (remotely from Great Basin Desert, Beryl Junction, Utah, USA)
Reposted by Med Amine Hamidi
Comet 240P/NEAT has now a small fragment (B) that is bright enough to be seen with modest telescopes. The nucleus shines at about mag 12 while B is two magnitudes fainter. #cometWatch #astrophotography
November 27, 2025 at 7:55 PM
Comet 240P/NEAT has now a small fragment (B) that is bright enough to be seen with modest telescopes. The nucleus shines at about mag 12 while B is two magnitudes fainter. #cometWatch #astrophotography
Reposted by Med Amine Hamidi
Today on the #arXiv :
Haqq-Misra, Kopparapu, & Profitiliotis 2026, "Projections of Earth's Technosphere: Strategies for Observing Technosignatures on Terrestrial Exoplanets" - arxiv.org/abs/2511.20329
Haqq-Misra, Kopparapu, & Profitiliotis 2026, "Projections of Earth's Technosphere: Strategies for Observing Technosignatures on Terrestrial Exoplanets" - arxiv.org/abs/2511.20329
Projections of Earth's Technosphere: Strategies for Observing Technosignatures on Terrestrial Exoplanets
The search for technosignatures -- remotely detectable evidence of extraterrestrial technology -- draws upon examples from the recent history of Earth as well as projections of Earth's technosphere. F...
arxiv.org
November 26, 2025 at 5:44 PM
Today on the #arXiv :
Haqq-Misra, Kopparapu, & Profitiliotis 2026, "Projections of Earth's Technosphere: Strategies for Observing Technosignatures on Terrestrial Exoplanets" - arxiv.org/abs/2511.20329
Haqq-Misra, Kopparapu, & Profitiliotis 2026, "Projections of Earth's Technosphere: Strategies for Observing Technosignatures on Terrestrial Exoplanets" - arxiv.org/abs/2511.20329
Reposted by Med Amine Hamidi
Newly-discovered asteroid 2025 WZ₃ is currently passing through Earth's anti umbra 3 days before making a close approach of 1.15x the Moon's distance.
November 26, 2025 at 6:27 PM
Newly-discovered asteroid 2025 WZ₃ is currently passing through Earth's anti umbra 3 days before making a close approach of 1.15x the Moon's distance.
My Favorite Little Friend 🐈
November 26, 2025 at 5:39 PM
My Favorite Little Friend 🐈
Medieval Illustrations of Comet Appearance Forms ; Including Multi-Tailed, Anti-Tail, and Diffuse ("Smudge-Like") Comets ,from Tanwīr al-Ghayāb (11th Century AH)
November 25, 2025 at 5:31 PM
Medieval Illustrations of Comet Appearance Forms ; Including Multi-Tailed, Anti-Tail, and Diffuse ("Smudge-Like") Comets ,from Tanwīr al-Ghayāb (11th Century AH)
Satellite captured the moment Hayli Gubbi erupted after ~12,000 years.
A rare event in the Danakil Depression, Ethiopia.
A rare event in the Danakil Depression, Ethiopia.
November 24, 2025 at 9:11 PM
Satellite captured the moment Hayli Gubbi erupted after ~12,000 years.
A rare event in the Danakil Depression, Ethiopia.
A rare event in the Danakil Depression, Ethiopia.
Reposted by Med Amine Hamidi
☀️ La semaine dernière, la Terre a été frappée par une grande tempête solaire. En 48 h, le Soleil a lancé 3 éjections de masse coronale (CME) consécutives déclenchant une violente tempête géomagnétique.
Diverses sondes l'ont observé.
La sonde Solar Orbiter de l'ESA :
Diverses sondes l'ont observé.
La sonde Solar Orbiter de l'ESA :
November 23, 2025 at 11:37 AM
☀️ La semaine dernière, la Terre a été frappée par une grande tempête solaire. En 48 h, le Soleil a lancé 3 éjections de masse coronale (CME) consécutives déclenchant une violente tempête géomagnétique.
Diverses sondes l'ont observé.
La sonde Solar Orbiter de l'ESA :
Diverses sondes l'ont observé.
La sonde Solar Orbiter de l'ESA :
This month I spent almost all my time looking for Arabic observations of bright comets. I uncovered close to 45 records ,some possibly previously unknown ,but sadly, the majority lacked detail, typically only mentioning when the comet appeared and giving no information about its position in the sky.
November 24, 2025 at 12:44 PM
This month I spent almost all my time looking for Arabic observations of bright comets. I uncovered close to 45 records ,some possibly previously unknown ,but sadly, the majority lacked detail, typically only mentioning when the comet appeared and giving no information about its position in the sky.
Reposted by Med Amine Hamidi
It's interesting that this period is close to the possible return of the de Cheseaux comet in 1402 (according to the study), but it is difficult to determine whether it was the same comet or other bright comets observed between 1029 and 1030.
November 22, 2025 at 2:09 AM
It's interesting that this period is close to the possible return of the de Cheseaux comet in 1402 (according to the study), but it is difficult to determine whether it was the same comet or other bright comets observed between 1029 and 1030.
In the old Arabic book ‘Aqd al-Juman, it is reported that a comet appeared in 684 AH. The astronomer Imad al-Din said it had the same appearance as a comet seen at the birth of Caliph al-Mustansir around ~420 AH / 1030/1031 CE,he described it as having three great tails,the third being the shortest.
November 22, 2025 at 2:04 AM
In the old Arabic book ‘Aqd al-Juman, it is reported that a comet appeared in 684 AH. The astronomer Imad al-Din said it had the same appearance as a comet seen at the birth of Caliph al-Mustansir around ~420 AH / 1030/1031 CE,he described it as having three great tails,the third being the shortest.
Reposted by Med Amine Hamidi
Okay, paper deadline mid-February. Should be doable if I can keep the momentum. Hate it and love it at the same time. Can't wait to see it published. Let's go.
Scholar Sharpening His Quill
Gerrit Dou (Leiden 1613 – 1675 Leiden)
☄️🔭
Scholar Sharpening His Quill
Gerrit Dou (Leiden 1613 – 1675 Leiden)
☄️🔭
November 17, 2025 at 6:39 PM
Okay, paper deadline mid-February. Should be doable if I can keep the momentum. Hate it and love it at the same time. Can't wait to see it published. Let's go.
Scholar Sharpening His Quill
Gerrit Dou (Leiden 1613 – 1675 Leiden)
☄️🔭
Scholar Sharpening His Quill
Gerrit Dou (Leiden 1613 – 1675 Leiden)
☄️🔭
Reposted by Med Amine Hamidi
Colors of Life in the Clouds - Biopigments of Atmospheric Microorganisms as a New Signature to Detect Life on Planets like Earth: iopscience.iop.org/article/10.3... -> How to spot life in the clouds on other worlds: news.cornell.edu/stories/2025...
November 14, 2025 at 12:09 AM
Colors of Life in the Clouds - Biopigments of Atmospheric Microorganisms as a New Signature to Detect Life on Planets like Earth: iopscience.iop.org/article/10.3... -> How to spot life in the clouds on other worlds: news.cornell.edu/stories/2025...
Reposted by Med Amine Hamidi
November 11, 2025 at 5:30 AM
Reposted by Med Amine Hamidi
#bskycometography no. 357
C/1956 R1 (Arend-Roland)
1956 Nov 8: Discovered by S. J. V. Arend & G. Roland (Belgium) at 10 mag. Predisc of Nov 7 from Japan. The comet reached 1 mag around perihelion (1957 Apr 8 at 0.32 au). Max tail 30° and 15° sunward tail! Last seen on Apr 11.
☄️🔭 #CometWatch
C/1956 R1 (Arend-Roland)
1956 Nov 8: Discovered by S. J. V. Arend & G. Roland (Belgium) at 10 mag. Predisc of Nov 7 from Japan. The comet reached 1 mag around perihelion (1957 Apr 8 at 0.32 au). Max tail 30° and 15° sunward tail! Last seen on Apr 11.
☄️🔭 #CometWatch
November 8, 2025 at 3:37 PM
#bskycometography no. 357
C/1956 R1 (Arend-Roland)
1956 Nov 8: Discovered by S. J. V. Arend & G. Roland (Belgium) at 10 mag. Predisc of Nov 7 from Japan. The comet reached 1 mag around perihelion (1957 Apr 8 at 0.32 au). Max tail 30° and 15° sunward tail! Last seen on Apr 11.
☄️🔭 #CometWatch
C/1956 R1 (Arend-Roland)
1956 Nov 8: Discovered by S. J. V. Arend & G. Roland (Belgium) at 10 mag. Predisc of Nov 7 from Japan. The comet reached 1 mag around perihelion (1957 Apr 8 at 0.32 au). Max tail 30° and 15° sunward tail! Last seen on Apr 11.
☄️🔭 #CometWatch
Reposted by Med Amine Hamidi
Comet C/2025 R2 (SWAN)
2025 Nov. 06.45 UT m1=9.4: (m2=13.7) Dia.=&3.8' ... [T32] 0.43-m f/6.8 Corrected Dall-Kirkham Astrograph + CMOS... iTelescope observatory, Q62 (remotely from Siding Spring, Australia)
[interference by Moon: Moon phase 0.99, altitude +13 deg]
2025 Nov. 06.45 UT m1=9.4: (m2=13.7) Dia.=&3.8' ... [T32] 0.43-m f/6.8 Corrected Dall-Kirkham Astrograph + CMOS... iTelescope observatory, Q62 (remotely from Siding Spring, Australia)
[interference by Moon: Moon phase 0.99, altitude +13 deg]
November 6, 2025 at 9:06 PM
Comet C/2025 R2 (SWAN)
2025 Nov. 06.45 UT m1=9.4: (m2=13.7) Dia.=&3.8' ... [T32] 0.43-m f/6.8 Corrected Dall-Kirkham Astrograph + CMOS... iTelescope observatory, Q62 (remotely from Siding Spring, Australia)
[interference by Moon: Moon phase 0.99, altitude +13 deg]
2025 Nov. 06.45 UT m1=9.4: (m2=13.7) Dia.=&3.8' ... [T32] 0.43-m f/6.8 Corrected Dall-Kirkham Astrograph + CMOS... iTelescope observatory, Q62 (remotely from Siding Spring, Australia)
[interference by Moon: Moon phase 0.99, altitude +13 deg]
Reposted by Med Amine Hamidi
#bskycometography no. 351
C/1577 V1
1577 Nov 2: First seen from Peru at maybe -7 mag! Quickly seen world-wide. Perihelion on Oct 27 at 0.18 au, perigee on Nov 10 at 0.62 au. Used to prove for the first time that comets are outside of Earth's atmosphere. Last seen on 1578 Jan 26.
☄️🔭 #CometWatch
C/1577 V1
1577 Nov 2: First seen from Peru at maybe -7 mag! Quickly seen world-wide. Perihelion on Oct 27 at 0.18 au, perigee on Nov 10 at 0.62 au. Used to prove for the first time that comets are outside of Earth's atmosphere. Last seen on 1578 Jan 26.
☄️🔭 #CometWatch
November 2, 2025 at 3:15 PM
#bskycometography no. 351
C/1577 V1
1577 Nov 2: First seen from Peru at maybe -7 mag! Quickly seen world-wide. Perihelion on Oct 27 at 0.18 au, perigee on Nov 10 at 0.62 au. Used to prove for the first time that comets are outside of Earth's atmosphere. Last seen on 1578 Jan 26.
☄️🔭 #CometWatch
C/1577 V1
1577 Nov 2: First seen from Peru at maybe -7 mag! Quickly seen world-wide. Perihelion on Oct 27 at 0.18 au, perigee on Nov 10 at 0.62 au. Used to prove for the first time that comets are outside of Earth's atmosphere. Last seen on 1578 Jan 26.
☄️🔭 #CometWatch