The last ~24 hours of the Sun in EUV in 171+193+211 Å SDO AIA filters. We see the large transequatorial coronal hole now directly facing Earth. Enhanced solar wind may arrive in 2-3 days. An M1.06 flare peaking at 0756 UT on Dec 20 + non Earth-directed CME occured from AR 4315.
#heliophysics
#heliophysics
December 20, 2025 at 9:36 PM
The last ~24 hours of the Sun in EUV in 171+193+211 Å SDO AIA filters. We see the large transequatorial coronal hole now directly facing Earth. Enhanced solar wind may arrive in 2-3 days. An M1.06 flare peaking at 0756 UT on Dec 20 + non Earth-directed CME occured from AR 4315.
#heliophysics
#heliophysics
‼️ALERT‼️
The Administration is now targeting #NCAR, claiming it spreads federal climate alarmism.
I reject the premise that climate science is alarmist. But NCAR enables much more science research NCAR than that. Closure would be devastating, including for #heliophysics at @colorado.edu and HAO.
The Administration is now targeting #NCAR, claiming it spreads federal climate alarmism.
I reject the premise that climate science is alarmist. But NCAR enables much more science research NCAR than that. Closure would be devastating, including for #heliophysics at @colorado.edu and HAO.
Trump moves to dismantle major US climate research center in Colorado
The Trump administration is breaking up the National Center for Atmospheric Research, taking aim at one of the world's leading climate research labs.
www.usatoday.com
December 17, 2025 at 5:23 AM
‼️ALERT‼️
The Administration is now targeting #NCAR, claiming it spreads federal climate alarmism.
I reject the premise that climate science is alarmist. But NCAR enables much more science research NCAR than that. Closure would be devastating, including for #heliophysics at @colorado.edu and HAO.
The Administration is now targeting #NCAR, claiming it spreads federal climate alarmism.
I reject the premise that climate science is alarmist. But NCAR enables much more science research NCAR than that. Closure would be devastating, including for #heliophysics at @colorado.edu and HAO.
A large, snaking coronal hole is facing Earth. Fast solar wind from its western edge is currently affecting us now with solar wind speeds > 600 km/s. These conditions may spark active high-latitude aurora with bursts of activity reaching upper-mid latitudes at times.
#heliophysics
#heliophysics
December 13, 2025 at 8:28 PM
A large, snaking coronal hole is facing Earth. Fast solar wind from its western edge is currently affecting us now with solar wind speeds > 600 km/s. These conditions may spark active high-latitude aurora with bursts of activity reaching upper-mid latitudes at times.
#heliophysics
#heliophysics
A very large coronal hole is currently dominating the Earth-facing solar disk. You can see it here as this dark, snaking patch in SDO imagery. I have annotated the image. The leading edge of this coronal hole seems to be affecting Earth now, and more disturbances could be on the way.
#heliophysics
#heliophysics
December 13, 2025 at 4:24 AM
A very large coronal hole is currently dominating the Earth-facing solar disk. You can see it here as this dark, snaking patch in SDO imagery. I have annotated the image. The leading edge of this coronal hole seems to be affecting Earth now, and more disturbances could be on the way.
#heliophysics
#heliophysics
Day 12 of #ArtAdventCalendar
Oops, I blinked and we’re almost halfway through December. Here’s a design from all the way back in 2019 that I shockingly still love. P is for Parker Solar Probe.
#sciart #spaceart #nasa #heliophysics
Oops, I blinked and we’re almost halfway through December. Here’s a design from all the way back in 2019 that I shockingly still love. P is for Parker Solar Probe.
#sciart #spaceart #nasa #heliophysics
December 12, 2025 at 11:55 PM
Day 12 of #ArtAdventCalendar
Oops, I blinked and we’re almost halfway through December. Here’s a design from all the way back in 2019 that I shockingly still love. P is for Parker Solar Probe.
#sciart #spaceart #nasa #heliophysics
Oops, I blinked and we’re almost halfway through December. Here’s a design from all the way back in 2019 that I shockingly still love. P is for Parker Solar Probe.
#sciart #spaceart #nasa #heliophysics
PUNCH observations of comet 3I/ATLAS: where #planetaryscience meets #heliophysics.
I am lucky to work in the same building as most of the PUNCH team, so I get early peaks at the great science. They are doing amazing work with that mission, and some of it will benefit planetary science. Very cool!
I am lucky to work in the same building as most of the PUNCH team, so I get early peaks at the great science. They are doing amazing work with that mission, and some of it will benefit planetary science. Very cool!
Here's a little more info on the @swri.org team that tracked 3I/ATLAS using @punch-mission.bsky.social data! ☀️🔭🧪🛰️🚀
SwRI researchers use PUNCH to track interstellar comet 3I/ATLAS | Southwest Research Institute
SwRI-led spacecraft provides vital data while 3I/ATLAS is too close to the Sun for others to observe
www.swri.org
December 8, 2025 at 5:31 PM
PUNCH observations of comet 3I/ATLAS: where #planetaryscience meets #heliophysics.
I am lucky to work in the same building as most of the PUNCH team, so I get early peaks at the great science. They are doing amazing work with that mission, and some of it will benefit planetary science. Very cool!
I am lucky to work in the same building as most of the PUNCH team, so I get early peaks at the great science. They are doing amazing work with that mission, and some of it will benefit planetary science. Very cool!
Tomorrow, we may see a strong, G3 geomagnetic storm and auroras occuring further equatorward than usual. This is in response to a coronal mass ejection (CME) heading towards Earth. Impact may occur sometime Monday night into Tuesday. Here's what's happening and what to expect 🧵
#heliophysics
#heliophysics
December 7, 2025 at 7:53 PM
Tomorrow, we may see a strong, G3 geomagnetic storm and auroras occuring further equatorward than usual. This is in response to a coronal mass ejection (CME) heading towards Earth. Impact may occur sometime Monday night into Tuesday. Here's what's happening and what to expect 🧵
#heliophysics
#heliophysics
Just now: NOAA SWPC Is forecasting the M8.1 CME to arrive around 5 UT on Dec 9. This is essentially the same arrival time as the NASA M2M model, so it's great these models are converging. Monday night is "the night" for potential auroras at mid-latitudes. Fingers crossed!
#heliophysics #aurora
#heliophysics #aurora
December 7, 2025 at 4:05 AM
Just now: NOAA SWPC Is forecasting the M8.1 CME to arrive around 5 UT on Dec 9. This is essentially the same arrival time as the NASA M2M model, so it's great these models are converging. Monday night is "the night" for potential auroras at mid-latitudes. Fingers crossed!
#heliophysics #aurora
#heliophysics #aurora
The M1.1 flare from AR 4299 apparently destabilized a filament immediately to the east of the active region. A CME may be associated with this development, but we'll need to see what emerges in coronagraph imagery to confirm... finally the Sun gives us something to talk about!
#heliophysics
#heliophysics
December 6, 2025 at 7:33 PM
The M1.1 flare from AR 4299 apparently destabilized a filament immediately to the east of the active region. A CME may be associated with this development, but we'll need to see what emerges in coronagraph imagery to confirm... finally the Sun gives us something to talk about!
#heliophysics
#heliophysics
Parker Solar Probe is heading towards these sunspots, got a direct hit from the CME they unleashed some days ago. #heliophysics #astronomy
December 3, 2025 at 7:28 PM
Parker Solar Probe is heading towards these sunspots, got a direct hit from the CME they unleashed some days ago. #heliophysics #astronomy
The sunspot number for November is in, and it was a steep drop close to late 2022-levels. We are on the declining phase of the solar cycle.
A "double-hump" solar cycle does NOT seem likely to me, but the declining phase is a very exciting time for aurora chasers, here's why 🧵
#heliophysics
A "double-hump" solar cycle does NOT seem likely to me, but the declining phase is a very exciting time for aurora chasers, here's why 🧵
#heliophysics
December 3, 2025 at 2:14 AM
The sunspot number for November is in, and it was a steep drop close to late 2022-levels. We are on the declining phase of the solar cycle.
A "double-hump" solar cycle does NOT seem likely to me, but the declining phase is a very exciting time for aurora chasers, here's why 🧵
#heliophysics
A "double-hump" solar cycle does NOT seem likely to me, but the declining phase is a very exciting time for aurora chasers, here's why 🧵
#heliophysics
Here is the current Sun and a summary thread of what is going on. We have three major-flare players in the east with a large, trans-equatorial coronal hole currently staring us down. There is a forecast for G1-G2 (slight G3) on Dec 3-4 and mid-latitude aurora possibilities.
#heliophysics
#heliophysics
December 2, 2025 at 4:50 PM
Here is the current Sun and a summary thread of what is going on. We have three major-flare players in the east with a large, trans-equatorial coronal hole currently staring us down. There is a forecast for G1-G2 (slight G3) on Dec 3-4 and mid-latitude aurora possibilities.
#heliophysics
#heliophysics
First time imaging the Sun for a while. White light image (on the right) from the Seestar, left hand image from a Coronado Solar Max H-alpha 🔭 . Both images are best 25% frames from video, stacked in AstroSurface and processed with PixInsight SolarToolbox. #astrophotography #heliophysics
December 2, 2025 at 12:39 PM
First time imaging the Sun for a while. White light image (on the right) from the Seestar, left hand image from a Coronado Solar Max H-alpha 🔭 . Both images are best 25% frames from video, stacked in AstroSurface and processed with PixInsight SolarToolbox. #astrophotography #heliophysics
In case you are wondering about the NASA M2M prediction for the X1.9 CME, they are modeling it as a miss. Here is the WSA-ENLIL+Cone model showing the shock and bulk heading east of the Earth.
#heliophysics
#heliophysics
December 2, 2025 at 5:19 AM
In case you are wondering about the NASA M2M prediction for the X1.9 CME, they are modeling it as a miss. Here is the WSA-ENLIL+Cone model showing the shock and bulk heading east of the Earth.
#heliophysics
#heliophysics
BOOM! X-CLASS FLARE HAPPENING NOW from an un-numbered active region (AR) on the Sun's northeastern limb. This is ex-AR 4274 which gave us the G4 storm earlier in November. Apparently, it still has some juice left for more fireworks.
#heliophysics
#heliophysics
December 1, 2025 at 2:47 AM
BOOM! X-CLASS FLARE HAPPENING NOW from an un-numbered active region (AR) on the Sun's northeastern limb. This is ex-AR 4274 which gave us the G4 storm earlier in November. Apparently, it still has some juice left for more fireworks.
#heliophysics
#heliophysics
Looks like Parker Solar Probe is right in the path of the latest CME! Go Parker!
iswa.gsfc.nasa.gov/downloads/20...
iswa.gsfc.nasa.gov/downloads/20...
#heliophysics #astronomy
iswa.gsfc.nasa.gov/downloads/20...
iswa.gsfc.nasa.gov/downloads/20...
#heliophysics #astronomy
iswa.gsfc.nasa.gov
December 1, 2025 at 8:02 PM
Looks like Parker Solar Probe is right in the path of the latest CME! Go Parker!
iswa.gsfc.nasa.gov/downloads/20...
iswa.gsfc.nasa.gov/downloads/20...
#heliophysics #astronomy
iswa.gsfc.nasa.gov/downloads/20...
iswa.gsfc.nasa.gov/downloads/20...
#heliophysics #astronomy
Good morning. The X1.9 CME has been modeled by a few agencies. NASA M2M registers a miss at Earth, NOAA SWPC predicts a love tap from the shock front around Dec 4, 11 UT, and HUXt is giving a ~37% chance of a hit around Dec 4, 3 UT with high arrival time uncertainty.
#heliophysics
#heliophysics
December 1, 2025 at 6:33 PM
Good morning. The X1.9 CME has been modeled by a few agencies. NASA M2M registers a miss at Earth, NOAA SWPC predicts a love tap from the shock front around Dec 4, 11 UT, and HUXt is giving a ~37% chance of a hit around Dec 4, 3 UT with high arrival time uncertainty.
#heliophysics
#heliophysics
AR 4294 has now reached the conspiracy pages. Let’s break down this recent post I saw on X with tens of thousands of impressions. The same is happening on other platforms, too.
#heliophysics
#heliophysics
November 30, 2025 at 10:01 PM
AR 4294 has now reached the conspiracy pages. Let’s break down this recent post I saw on X with tens of thousands of impressions. The same is happening on other platforms, too.
#heliophysics
#heliophysics
the cover art by @damienmammoliti.bsky.social for @hellomcdm.bsky.social's Crack the Sun is gorgeous! is this a #heliophysics post too? 😉
Crack the Sun for Draw Steel is coming! I worked on the cover! What???
Thanks @eriopsis.bsky.social :) A huge honor!
Follow the project here!
www.backerkit.com/c/projects/m...
Thanks @eriopsis.bsky.social :) A huge honor!
Follow the project here!
www.backerkit.com/c/projects/m...
The MCDM RPG: Draw Steel Project Update: Draw Steel Updated PDFs Now Available
Hey Folks!
If you spend time on our Discord or r/DrawSteel you probably know most of this, but just in case here is a brief update of all the things we have going right now ...
www.backerkit.com
November 30, 2025 at 3:25 AM
the cover art by @damienmammoliti.bsky.social for @hellomcdm.bsky.social's Crack the Sun is gorgeous! is this a #heliophysics post too? 😉
Working with #legacy data?
Share your experiences w/ @innako.bsky.social & GRStahlman as part of a study of how such resources are perceived, preserved, and collaboratively managed
#histsci #astrophysics #science #heliophysics #planetaryscience #earthscience
fsu.qualtrics.com/jfe/form/SV_...
Share your experiences w/ @innako.bsky.social & GRStahlman as part of a study of how such resources are perceived, preserved, and collaboratively managed
#histsci #astrophysics #science #heliophysics #planetaryscience #earthscience
fsu.qualtrics.com/jfe/form/SV_...
Legacy Data: Value and Practices
This is a study to develop a systematic understanding of legacy research data efforts across disciplines and stakeholder communities.
fsu.qualtrics.com
November 20, 2025 at 5:05 AM
Working with #legacy data?
Share your experiences w/ @innako.bsky.social & GRStahlman as part of a study of how such resources are perceived, preserved, and collaboratively managed
#histsci #astrophysics #science #heliophysics #planetaryscience #earthscience
fsu.qualtrics.com/jfe/form/SV_...
Share your experiences w/ @innako.bsky.social & GRStahlman as part of a study of how such resources are perceived, preserved, and collaboratively managed
#histsci #astrophysics #science #heliophysics #planetaryscience #earthscience
fsu.qualtrics.com/jfe/form/SV_...
Scientists can use helioseismology to probe for large active regions we can't see. In this annotated image courtsey of SolarHam, we can see two chunky active regions approaching the east limb potentially rotating into our view in the coming days. Ex-AR 4274 looks healthy, too.
#heliophysics
#heliophysics
November 19, 2025 at 10:59 PM
Scientists can use helioseismology to probe for large active regions we can't see. In this annotated image courtsey of SolarHam, we can see two chunky active regions approaching the east limb potentially rotating into our view in the coming days. Ex-AR 4274 looks healthy, too.
#heliophysics
#heliophysics
Small, negative-polarity coronal hole no. 96 is currently facing Earth and could send a small burst of fast wind our way, reaching us by perhaps the weekend. Minor geomagnetic storming is possible, but I am not getting super excited about this one... 🧵
#heliophysics
#heliophysics
November 18, 2025 at 11:26 PM
Small, negative-polarity coronal hole no. 96 is currently facing Earth and could send a small burst of fast wind our way, reaching us by perhaps the weekend. Minor geomagnetic storming is possible, but I am not getting super excited about this one... 🧵
#heliophysics
#heliophysics
New paper alert!
We report unseen piece of CME-driven wave dynamics: the first evidence of coherent global compressive oscillations in the outer corona +inner heliosphere.
#solarphysics #heliophysics #spaceweather #CME
We report unseen piece of CME-driven wave dynamics: the first evidence of coherent global compressive oscillations in the outer corona +inner heliosphere.
#solarphysics #heliophysics #spaceweather #CME
November 18, 2025 at 3:48 PM
New paper alert!
We report unseen piece of CME-driven wave dynamics: the first evidence of coherent global compressive oscillations in the outer corona +inner heliosphere.
#solarphysics #heliophysics #spaceweather #CME
We report unseen piece of CME-driven wave dynamics: the first evidence of coherent global compressive oscillations in the outer corona +inner heliosphere.
#solarphysics #heliophysics #spaceweather #CME
www.sr.bham.ac.uk/nam2026/sess...
Session proposals are now open for the 2026 UK National Astronomy Meeting at the University of Birmingham, with a 19th December deadline. #astronomy #heliophysics #uknam2026
Session proposals are now open for the 2026 UK National Astronomy Meeting at the University of Birmingham, with a 19th December deadline. #astronomy #heliophysics #uknam2026
November 17, 2025 at 7:02 PM
www.sr.bham.ac.uk/nam2026/sess...
Session proposals are now open for the 2026 UK National Astronomy Meeting at the University of Birmingham, with a 19th December deadline. #astronomy #heliophysics #uknam2026
Session proposals are now open for the 2026 UK National Astronomy Meeting at the University of Birmingham, with a 19th December deadline. #astronomy #heliophysics #uknam2026
The X4 CME from AR 4274 generated a nice coronal mass ejection (CME), but most of the blast is headed away from our planet. This is because the active region is positioned on the Sun's limb and not facing Earth like it was last week. Still, we may see a clip from this CME.
#heliophysics
#heliophysics
November 14, 2025 at 3:54 PM
The X4 CME from AR 4274 generated a nice coronal mass ejection (CME), but most of the blast is headed away from our planet. This is because the active region is positioned on the Sun's limb and not facing Earth like it was last week. Still, we may see a clip from this CME.
#heliophysics
#heliophysics