California Nebula
4hr integration
stars removed
#stellarastro #astrophotography #astro #nebulae #dao #dwarf3
4hr integration
stars removed
#stellarastro #astrophotography #astro #nebulae #dao #dwarf3
November 24, 2025 at 5:39 PM
California Nebula
4hr integration
stars removed
#stellarastro #astrophotography #astro #nebulae #dao #dwarf3
4hr integration
stars removed
#stellarastro #astrophotography #astro #nebulae #dao #dwarf3
Watch the solar plasma curve along magnetic field lines like iron filings near a bar magnet. #stellarastro 🧪🔭
This work was funded in part by NSF.
This work was funded in part by NSF.
May 29, 2025 at 2:19 AM
Watch the solar plasma curve along magnetic field lines like iron filings near a bar magnet. #stellarastro 🧪🔭
This work was funded in part by NSF.
This work was funded in part by NSF.
🧵
The #JWST has recently given us one of the most beautiful images of late years: the stellar system Apep, a trio of massive stars surrounded by four perfect dust spirals that look almost drawn by hand.
➡️ science.nasa.gov/missions/web...
🔭 🧪 #science #stellarastro #astro
1/9
The #JWST has recently given us one of the most beautiful images of late years: the stellar system Apep, a trio of massive stars surrounded by four perfect dust spirals that look almost drawn by hand.
➡️ science.nasa.gov/missions/web...
🔭 🧪 #science #stellarastro #astro
1/9
December 5, 2025 at 12:25 AM
🧵
The #JWST has recently given us one of the most beautiful images of late years: the stellar system Apep, a trio of massive stars surrounded by four perfect dust spirals that look almost drawn by hand.
➡️ science.nasa.gov/missions/web...
🔭 🧪 #science #stellarastro #astro
1/9
The #JWST has recently given us one of the most beautiful images of late years: the stellar system Apep, a trio of massive stars surrounded by four perfect dust spirals that look almost drawn by hand.
➡️ science.nasa.gov/missions/web...
🔭 🧪 #science #stellarastro #astro
1/9
#stellarastro 🔭🌟 look at all the rotation periods @meirs.bsky.social measured from the ground!!
arxiv.org/abs/2509.14423
⭐️paper day!⭐️
hey now, we found thousands of stellar variability periods, including ~26k very high likelihood new ASAS-SN rotation periods from cool dwarfs!
(also I have missed abt 5 typos in this version already, but it’s only been submitted to ApJS so it’ll get fixed!)..
⭐️paper day!⭐️
hey now, we found thousands of stellar variability periods, including ~26k very high likelihood new ASAS-SN rotation periods from cool dwarfs!
(also I have missed abt 5 typos in this version already, but it’s only been submitted to ApJS so it’ll get fixed!)..
200,000+ Deep Learning Inferred Periods of Stellar Variability from The All-Sky Automated Survey for Supernovae
Stars exhibit a range of variability periods that depend on their mass, age, and evolutionary stage. For space-based photometric data, convolutional neural networks (CNNs) have demonstrated success in...
arxiv.org
September 19, 2025 at 4:51 PM
#stellarastro 🔭🌟 look at all the rotation periods @meirs.bsky.social measured from the ground!!
November 25, 2025 at 5:22 PM
The Trifid Nebula (Messier 20) in the constellation Sagittarius. If the Heart Nebula looks like a symbolic heart, this one is more like an anatomical heart. 🔭 #milkyway #stellarastro
December 12, 2024 at 11:59 PM
The Trifid Nebula (Messier 20) in the constellation Sagittarius. If the Heart Nebula looks like a symbolic heart, this one is more like an anatomical heart. 🔭 #milkyway #stellarastro
📢New paper alert!
"IK Pegasi and the Double Merger Path to Type Ia Supernovae", co-led with S. Shahaf
How do you get a massive white dwarf paired with a Barium-rich companion? It started as a triple system!
A potential major pathway to SNe Ia.
ui.adsabs.harvard.edu/abs/2026arXi...
#astronomy #stars
"IK Pegasi and the Double Merger Path to Type Ia Supernovae", co-led with S. Shahaf
How do you get a massive white dwarf paired with a Barium-rich companion? It started as a triple system!
A potential major pathway to SNe Ia.
ui.adsabs.harvard.edu/abs/2026arXi...
#astronomy #stars
January 15, 2026 at 11:07 PM
December 15, 2025 at 4:33 PM
🧵
This is a solar prominence!
Using the Goode Solar Telescope (GST) at Big Bear Solar Observatory and the new coronal adaptive optics system Cona, a team of scientists has observed the solar corona in unprecedented details.
➡️ nso.edu/press-releas...
🔭 🧪 #science #stellarastro ⚛️
This is a solar prominence!
Using the Goode Solar Telescope (GST) at Big Bear Solar Observatory and the new coronal adaptive optics system Cona, a team of scientists has observed the solar corona in unprecedented details.
➡️ nso.edu/press-releas...
🔭 🧪 #science #stellarastro ⚛️
May 31, 2025 at 6:30 PM
🧵
This is a solar prominence!
Using the Goode Solar Telescope (GST) at Big Bear Solar Observatory and the new coronal adaptive optics system Cona, a team of scientists has observed the solar corona in unprecedented details.
➡️ nso.edu/press-releas...
🔭 🧪 #science #stellarastro ⚛️
This is a solar prominence!
Using the Goode Solar Telescope (GST) at Big Bear Solar Observatory and the new coronal adaptive optics system Cona, a team of scientists has observed the solar corona in unprecedented details.
➡️ nso.edu/press-releas...
🔭 🧪 #science #stellarastro ⚛️
Bursting like a splash of paint, the supernova remnant Cassiopeia A seen by the combined power of the Chandra and Webb telescopes. It was 11,000 light-years away, and its explosion would have been observed in the 1690s. 🔭 #space #milkyway #stellarastro
December 13, 2024 at 7:38 AM
Bursting like a splash of paint, the supernova remnant Cassiopeia A seen by the combined power of the Chandra and Webb telescopes. It was 11,000 light-years away, and its explosion would have been observed in the 1690s. 🔭 #space #milkyway #stellarastro
🧵
NGC 6302, also known as the Butterfly Nebula, is a remarkable example of how stars, as they age, can take on some nice shapes sometimes resembling flowers or insects.
➡️ apod.nasa.gov/apod/ap22112...
This #Hubble image has been processed to highlight incredible
🔭 🧪 #stellarastro #galactic
NGC 6302, also known as the Butterfly Nebula, is a remarkable example of how stars, as they age, can take on some nice shapes sometimes resembling flowers or insects.
➡️ apod.nasa.gov/apod/ap22112...
This #Hubble image has been processed to highlight incredible
🔭 🧪 #stellarastro #galactic
April 18, 2025 at 10:21 PM
🧵
NGC 6302, also known as the Butterfly Nebula, is a remarkable example of how stars, as they age, can take on some nice shapes sometimes resembling flowers or insects.
➡️ apod.nasa.gov/apod/ap22112...
This #Hubble image has been processed to highlight incredible
🔭 🧪 #stellarastro #galactic
NGC 6302, also known as the Butterfly Nebula, is a remarkable example of how stars, as they age, can take on some nice shapes sometimes resembling flowers or insects.
➡️ apod.nasa.gov/apod/ap22112...
This #Hubble image has been processed to highlight incredible
🔭 🧪 #stellarastro #galactic
This week I am attending and presenting at Star Formation Fields, a conference organised by @univie.ac.at at Rethymno in Crete! 🔭
A great opportunity to discuss the latest developments on star formation, the interstellar medium and young stellar populations!
#stellarastro #galacticastro
A great opportunity to discuss the latest developments on star formation, the interstellar medium and young stellar populations!
#stellarastro #galacticastro
September 21, 2026 at 9:48 AM
This week I am attending and presenting at Star Formation Fields, a conference organised by @univie.ac.at at Rethymno in Crete! 🔭
A great opportunity to discuss the latest developments on star formation, the interstellar medium and young stellar populations!
#stellarastro #galacticastro
A great opportunity to discuss the latest developments on star formation, the interstellar medium and young stellar populations!
#stellarastro #galacticastro
RIP to Bill Paxton, lead developer of MESA. I feel privileged to have learned from the man himself at the 2012 MESA Summer School. #stellarastro #astrocode
July 30, 2025 at 1:04 PM
RIP to Bill Paxton, lead developer of MESA. I feel privileged to have learned from the man himself at the 2012 MESA Summer School. #stellarastro #astrocode
Editor's choice: Neights et al. have observed a gamma-ray burst that lasted 7 hours. They argue it arose from a black hole merging with a helium star. ☄️🔭 #highenergyastro #stellarastro
www.science.org/doi/10.1126/...
www.science.org/doi/10.1126/...
In Other Journals
Editors’ selections from the current scientific literature
www.science.org
January 19, 2026 at 12:36 PM
Editor's choice: Neights et al. have observed a gamma-ray burst that lasted 7 hours. They argue it arose from a black hole merging with a helium star. ☄️🔭 #highenergyastro #stellarastro
www.science.org/doi/10.1126/...
www.science.org/doi/10.1126/...
May 2, 2025 at 11:35 AM
🔭 ☄️ #stellarastro
Happy to announce that the line-detector.oca.eu website is now online!
It allows the user to select the stellar type, [M/H], λ- range, and resolving power and the page returns:
-purity of the line and minimum S/N required to detect it.
-interactive plot to identify the lines in the spectra
It allows the user to select the stellar type, [M/H], λ- range, and resolving power and the page returns:
-purity of the line and minimum S/N required to detect it.
-interactive plot to identify the lines in the spectra
June 24, 2025 at 3:59 PM
🔭 ☄️ #stellarastro
Postdoc in #stellarastro at the ICCUB in Barcelona ☄️
Everyone I know from the astro community in Barcelona is lovely, so I can highly recommend it!
Everyone I know from the astro community in Barcelona is lovely, so I can highly recommend it!
🚨 #MSCA Postdoc Fellowship in Stellar Physics at #ICCUB!
✨Join cutting-edge research on star formation, evolution & exoplanet habitability
🗓️ Deadline: Aug 20, 2025
📩 Apply: jobs@icc.ub.edu
🔗https://icc.ub.edu/node/1151639
#Astrophysics #MSCA #PostdocJobs #StellarPhysics #WomenInScience #Barcelona
✨Join cutting-edge research on star formation, evolution & exoplanet habitability
🗓️ Deadline: Aug 20, 2025
📩 Apply: jobs@icc.ub.edu
🔗https://icc.ub.edu/node/1151639
#Astrophysics #MSCA #PostdocJobs #StellarPhysics #WomenInScience #Barcelona
July 9, 2025 at 10:39 AM
Postdoc in #stellarastro at the ICCUB in Barcelona ☄️
Everyone I know from the astro community in Barcelona is lovely, so I can highly recommend it!
Everyone I know from the astro community in Barcelona is lovely, so I can highly recommend it!
Both fascinating and scary!
Coronal rain, forming when hotter plasma in the solar corona cools down (becoming denser), falls in enormous arches/loops painting the Sun's magnetic field lines.
Credit: Schmidt et al./NJIT/NSO/AURA/NSF
🔭 🧪 #stellarastro
Coronal rain, forming when hotter plasma in the solar corona cools down (becoming denser), falls in enormous arches/loops painting the Sun's magnetic field lines.
Credit: Schmidt et al./NJIT/NSO/AURA/NSF
🔭 🧪 #stellarastro
Watch the solar plasma curve along magnetic field lines like iron filings near a bar magnet. #stellarastro 🧪🔭
This work was funded in part by NSF.
This work was funded in part by NSF.
May 29, 2025 at 7:30 AM
Both fascinating and scary!
Coronal rain, forming when hotter plasma in the solar corona cools down (becoming denser), falls in enormous arches/loops painting the Sun's magnetic field lines.
Credit: Schmidt et al./NJIT/NSO/AURA/NSF
🔭 🧪 #stellarastro
Coronal rain, forming when hotter plasma in the solar corona cools down (becoming denser), falls in enormous arches/loops painting the Sun's magnetic field lines.
Credit: Schmidt et al./NJIT/NSO/AURA/NSF
🔭 🧪 #stellarastro
🧵
Sept. 1-2, 1859: The Carrington Event, during the solar cycle 10.
On 1 Sept. 1859, English astronomers Richard Carrington and Richard Hodgson noticed a sudden brightening on the Sun's surface like they'd never seen before— the first record of a solar flare... 1/5
🔭 🧪 #stellarastro #histsci
Sept. 1-2, 1859: The Carrington Event, during the solar cycle 10.
On 1 Sept. 1859, English astronomers Richard Carrington and Richard Hodgson noticed a sudden brightening on the Sun's surface like they'd never seen before— the first record of a solar flare... 1/5
🔭 🧪 #stellarastro #histsci
September 1, 2025 at 4:42 PM
🧵
Sept. 1-2, 1859: The Carrington Event, during the solar cycle 10.
On 1 Sept. 1859, English astronomers Richard Carrington and Richard Hodgson noticed a sudden brightening on the Sun's surface like they'd never seen before— the first record of a solar flare... 1/5
🔭 🧪 #stellarastro #histsci
Sept. 1-2, 1859: The Carrington Event, during the solar cycle 10.
On 1 Sept. 1859, English astronomers Richard Carrington and Richard Hodgson noticed a sudden brightening on the Sun's surface like they'd never seen before— the first record of a solar flare... 1/5
🔭 🧪 #stellarastro #histsci
Editor's choice: can stars be used to do #cosmology? Tomasetti et al. have dated the 160 oldest individual stars in the Milky Way. This allows them to set maximum and minimum ages of the Universe.
☄️🔭⚛️ #stellarastro
www.science.org/doi/10.1126/...
☄️🔭⚛️ #stellarastro
www.science.org/doi/10.1126/...
April 23, 2026 at 6:56 PM
Editor's choice: can stars be used to do #cosmology? Tomasetti et al. have dated the 160 oldest individual stars in the Milky Way. This allows them to set maximum and minimum ages of the Universe.
☄️🔭⚛️ #stellarastro
www.science.org/doi/10.1126/...
☄️🔭⚛️ #stellarastro
www.science.org/doi/10.1126/...
Interestingly, the star, which is marked by four long diffraction spikes, is located in our Milky Way just 7,109 ly from Earth.
This highlights how images of the cosmos can include objects at very different distances, creating a sort of perspective illusion.
🔭 🧪 #extragalactic #HST #stellarastro
This highlights how images of the cosmos can include objects at very different distances, creating a sort of perspective illusion.
🔭 🧪 #extragalactic #HST #stellarastro
This star & spiral galaxy may appear to be neighbours, but they're actually separated by 45 million light-years.
The image of the pair combines data from two instruments on the NASA/ESA #Hubble Space Telescope, taken more than 20 years apart.
Read more 👉 esahubble.org/images/potw2...
🔭
The image of the pair combines data from two instruments on the NASA/ESA #Hubble Space Telescope, taken more than 20 years apart.
Read more 👉 esahubble.org/images/potw2...
🔭
March 10, 2025 at 6:12 PM
Interestingly, the star, which is marked by four long diffraction spikes, is located in our Milky Way just 7,109 ly from Earth.
This highlights how images of the cosmos can include objects at very different distances, creating a sort of perspective illusion.
🔭 🧪 #extragalactic #HST #stellarastro
This highlights how images of the cosmos can include objects at very different distances, creating a sort of perspective illusion.
🔭 🧪 #extragalactic #HST #stellarastro
Star formation primarily takes place within compact clusters in the local Milky Way! 🌌 #galactic #stellarastro
We've shown this combining the results from two recent, Gaia-based catalogues: the open clusters census from @emily.space and my census of OB stars within 1 kpc!
We've shown this combining the results from two recent, Gaia-based catalogues: the open clusters census from @emily.space and my census of OB stars within 1 kpc!
Most stars form in clusters! 🔭🧪☄️ #galactic
In a new paper led by @alexis-space.bsky.social, we show that >80% of stars in the local Milky Way formed in clusters.
This is *much* higher than other recent estimates (~15%), and supports more traditional 'clustered' models of star formation!
In a new paper led by @alexis-space.bsky.social, we show that >80% of stars in the local Milky Way formed in clusters.
This is *much* higher than other recent estimates (~15%), and supports more traditional 'clustered' models of star formation!
How many stars form in compact clusters in the local Milky Way?
Two main models coexist for the environment in which stars form. The clustered model stipulates that the bulk of star formation occurs within dense embedded clusters, but only a minority of them survi...
arxiv.org
August 19, 2025 at 10:01 AM
Star formation primarily takes place within compact clusters in the local Milky Way! 🌌 #galactic #stellarastro
We've shown this combining the results from two recent, Gaia-based catalogues: the open clusters census from @emily.space and my census of OB stars within 1 kpc!
We've shown this combining the results from two recent, Gaia-based catalogues: the open clusters census from @emily.space and my census of OB stars within 1 kpc!
A new census of OB associations with Gaia!
In this study, we took advantage of my OB stars map to find new OB associations within 1 kpc. The goal was to create a useful reference catalogue for this era, and to trace the star formation and structure of the local Milky Way.
#stellarastro #galactic
In this study, we took advantage of my OB stars map to find new OB associations within 1 kpc. The goal was to create a useful reference catalogue for this era, and to trace the star formation and structure of the local Milky Way.
#stellarastro #galactic
December 8, 2025 at 8:06 AM
A new census of OB associations with Gaia!
In this study, we took advantage of my OB stars map to find new OB associations within 1 kpc. The goal was to create a useful reference catalogue for this era, and to trace the star formation and structure of the local Milky Way.
#stellarastro #galactic
In this study, we took advantage of my OB stars map to find new OB associations within 1 kpc. The goal was to create a useful reference catalogue for this era, and to trace the star formation and structure of the local Milky Way.
#stellarastro #galactic