Dr. Ryan French
@ryanjfrench.bsky.social
British Solar Astrophysicist at the Laboratory of Atmospheric & Space Physics ☀️ Author of ‘Space Hazards’ and 'The Sun: Beginner’s Guide to Our Local Star' - (views my own)
I use software called JHelioViewer to download and process the data! If you’re interested, I uploaded a YouTube tutorial on how to do it:
youtu.be/dBkQaAyWZZ4?...
youtu.be/dBkQaAyWZZ4?...
How to make movies of the Sun from NASA data (JHelioviewer tutorial)
YouTube video by Dr. Ryan French ☀️ Sun Scientist
youtu.be
December 4, 2025 at 3:18 AM
I use software called JHelioViewer to download and process the data! If you’re interested, I uploaded a YouTube tutorial on how to do it:
youtu.be/dBkQaAyWZZ4?...
youtu.be/dBkQaAyWZZ4?...
The major sunspot cluster of ARs 14296/14294/14298 continues its solar flare dry spell… for now.
December 4, 2025 at 3:07 AM
The major sunspot cluster of ARs 14296/14294/14298 continues its solar flare dry spell… for now.
If you make a painting based on this, I’d love to see it!
December 4, 2025 at 12:54 AM
If you make a painting based on this, I’d love to see it!
I’m so pleased you enjoyed it! Thanks again for putting the review together.
December 2, 2025 at 11:55 PM
I’m so pleased you enjoyed it! Thanks again for putting the review together.
We are now truly entering the declining phase of the solar cycle, but we’re far from over! Although solar flares are less common during this phase, some of the strongest flares of the solar cycle typically occur during this declining period.
December 2, 2025 at 11:53 PM
We are now truly entering the declining phase of the solar cycle, but we’re far from over! Although solar flares are less common during this phase, some of the strongest flares of the solar cycle typically occur during this declining period.
Movie is a composite of SDO/AIA broadband images, with red from 304 Å and white from 171 Å.
December 1, 2025 at 6:57 PM
Movie is a composite of SDO/AIA broadband images, with red from 304 Å and white from 171 Å.
The recent X-class solar flare is from the newly-visible region in the north east of the Sun, and not the larger region visible in to south east. Expect more large flares in the coming days!
December 1, 2025 at 3:00 AM
Yes I agree! Impossible to say for certain whether an individual event is from SEU, but great news that they’ve found that vulnerability.
November 29, 2025 at 5:45 PM
Yes I agree! Impossible to say for certain whether an individual event is from SEU, but great news that they’ve found that vulnerability.
Caveat: I’m a Sun expert, not an aviation expert! These posts are to educate on solar energetic particles & single event upsets, in response to (but not verifying) Airbus’s claim. Solar activity was lower on the day, but there is a constant background level of bit flips!
November 29, 2025 at 4:10 PM
Caveat: I’m a Sun expert, not an aviation expert! These posts are to educate on solar energetic particles & single event upsets, in response to (but not verifying) Airbus’s claim. Solar activity was lower on the day, but there is a constant background level of bit flips!
Ah, sorry! Hopefully the rest of the thread made it clearer!
November 29, 2025 at 12:57 AM
Ah, sorry! Hopefully the rest of the thread made it clearer!
To wrap up with a minor plug, my new book, 'Space Hazards', explores the effects of solar energetic particles, alongside other types of solar activity and risks from space. (8/8) amzn.to/3ZLuL0f
November 28, 2025 at 9:44 PM
To wrap up with a minor plug, my new book, 'Space Hazards', explores the effects of solar energetic particles, alongside other types of solar activity and risks from space. (8/8) amzn.to/3ZLuL0f
It's important to remember that Earth is not isolated in space, but we are living with a star! It is important for us to dedicate resources to improving our understanding of our Sun, and to better predict its influences on the technology we rely on. (7/8)
November 28, 2025 at 9:44 PM
It's important to remember that Earth is not isolated in space, but we are living with a star! It is important for us to dedicate resources to improving our understanding of our Sun, and to better predict its influences on the technology we rely on. (7/8)
In 2003, a candidate for a local election in Belgium received 4096 additional votes as an event of a single event upset. In 2008, a Qantas Airlines flight suddenly entered a ‘pitch-down’ manoeuvre at 38000 feet – similar to the story in the recent news, due to solar particles.
November 28, 2025 at 9:44 PM
In 2003, a candidate for a local election in Belgium received 4096 additional votes as an event of a single event upset. In 2008, a Qantas Airlines flight suddenly entered a ‘pitch-down’ manoeuvre at 38000 feet – similar to the story in the recent news, due to solar particles.
Flipping computer commands like this can cause many seemingly-random effects. Some are harmless and unnoticeable, but some can be serious. The influence on computer systems in this way is called a 'single event upset' or 'bit flip'. (5/8)
November 28, 2025 at 9:44 PM
Flipping computer commands like this can cause many seemingly-random effects. Some are harmless and unnoticeable, but some can be serious. The influence on computer systems in this way is called a 'single event upset' or 'bit flip'. (5/8)
Our computer systems work via a myriad of components sending and receiving electrical signals. To a computer, there is no difference between intentional electrical signals (which are sent via electrons), and incoming electrons from the Sun/space. (4/8)
November 28, 2025 at 9:44 PM
Our computer systems work via a myriad of components sending and receiving electrical signals. To a computer, there is no difference between intentional electrical signals (which are sent via electrons), and incoming electrons from the Sun/space. (4/8)