Michael Stark

A closer look at the coronal mass ejection produced by last night’s major solar flare. Some models are predicting that the eruption may have a minor Earth-directed component! #spaceweather

Was going through my old laptop and found this animation of comet Kudo-Fujikawa transiting the SOHO/LASCO C2 FOV! The images are from January 2003. Enjoy! ☄️
#CometWatch #ESA #NASA

A look at big sunspot region 4294 as it rotates into view on Saturday. The region is currently producing occasional M-Flares and is likely a threat for an isolated strong X-Flare. SolarHam.com

Versäumnisse der Regierung Johnson - Corona-Bericht: Tausende vermeidbare Tote in Großbritannien Eine Expertenkommission in Großbritannien wirft der damaligen konservativen Regierung von Premier Johnson schwere Versäumnisse zum Beginn der Corona-Pandemie 2020 vor.

www.deutschlandfunk.de/corona-beric...
Ich hatte mal überschlagen, dass eine ca. 2-3 Woche spätere Reaktion in D ca. 60.000 zusätzliche Todesfälle bedeutet hätte. Das scheint wohl mit dieser Schätzung aus UK übereinzustimmen.

A closeup of a comet's head with three apparent fragments in the inner coma. The comet has a white, dusty tail towards the upper right. In the background star trails are visible.

The at least three fragments of comet C/2025 K1 (ATLAS) imaged by Michael Jäger on Nov 18, 2025, at 3:17 UT, 42x7 sec, f= 1200 mm.
☄️🔭

Let's see if @kat-astro-bot.bsky.social can recognise anything.✨

A few impressions from the evening.✨

#astrophotography #astronomy

Sunday Night Doubleheader: Catch the 2025 Leonid Meteors and an Aurora Encore Keep an eye on the sky Sunday night and early Monday morning for the Leonid meteors, and a possible second auroral storm. Once every other generation, the Lion roars. If skies are clear Monday morning...

Keep an eye on the sky tonight for the peak of Leonid meteors...also, the skies may stream with aurora once again. Massive sunspot region AR 4274 kicked off another X-class flare Friday. Here’s our post on what to expect for @universetoday.com - www.universetoday.com/articles/sun...

Voll schön das Bild mit den Lichtern und dem Bodennebel! 🙃

Bei meinem gestrigen Post zu den #Polarlichtern handelt es sich leider um Lichtverschmutzung. Die Werte sahen ja gestern auch nicht so gut aus. Vielleicht auch ein Effekt durch den Saharastaub in der Atmosphäre?

Ich habe den Post deshalb auch mal wieder entfernt. Schön ausgesehen hat es dennoch. 🥲

Die Bilder sind voll schön! 😃 Das Wochenende, wo man die sehen konnte, war einfach episch! ✨🌈

That looks epic!

Hey Alice, hast du es denn auch gesehen? 🙃

Photographic red Aurora borealis from last night near Bielefeld (Germany).

Date: 12 November 2025
Time: Around 23:00 (CET)

#northernlights #Polarlichter #auroraborealis

The pictures are amazing!

The SOHO LASCO instrument is drowned in solar energetic particles due to the X5 flare earlier today Nov 11. A bit west of the disk center the particles are magnetically well connected to Earth. A massive #solarstorm was produced which we will model once initial conditions are available.

Resulting in a massive maximum total magnetic field of 63 nT, presumably the #solarstorm from Monday morning arrived 2025 Nov 11 23:38 at L1, and interacted with the previous storm just before it arrived at the L1 point near Earth. Dst reached - 238 nT, which is the 3rd strongest storm of this cycle

We just got an X5 flare from the same active region that launched the 2 #solarstorms earlier this week, at around 20 degrees north and west of disk center. We will again need to see whether a storm was launched with coronagraphs and then evaluate its potential arrival at Earth in the upcoming days.

A #solarstorm with an initial speed of ~730 km/s is on its way toward Earth! It’s associated with an X1.7-class flare that peaked today around 07:35 UTC.
The CME is expected to arrive Tuesday, 11 November, around 20:00 UTC (21:00 CET).
Let’s hope for a better aurora show than on Friday🤞🌌

Three plots showing current space weather conditions at Earth. The left-most plot shows the magentic field conditions, with a currently positive Bz component that was previously negative. The middle plot shows the Dst index, which currently sits at around -110 nT. The right-most plot shows the Newell coupling, which is currently at close to 0, but has peaked around 4.

☀️ Earth is currently experiencing a class G3 geomagnetic storm (likely caused by a #solarstorm flank hit), with Dst values going as low as -136 nT in the last 12 hours. Bz magnetic field component is currently positive, Dst values remain around -110 nT

I was worried for my crew mates when I saw them circling in the eye for over 20 mins. Looks like the very rough ride was confirmed. Plane had to leave early. They reported svr turb and a "sawtooth" eye. Looks like they moved 600-700ft up & down during this stretch in ~1 min.

From a crewmember on yesterday's Teal 74 mission into now-Category 5 Hurricane #Melissa. As clear of an eye as you will see in the Atlantic basin.

You might’ve heard the news: SpaceX just passed 10,000 Starlink satellites launched. And that number is already old news, as there’s now a new Starlink batch launched every other day. Here’s what that looks like in a short animation of Comet A6 Lemmon courtesy of Michael Jaeger:

A starfield with many small and colorful stars is dominated by comet Lemmon which is oriented diagonally in the frame. The comet has a greenish coma and a diffuse yellowish dust tail is pointing up from the nucleus. Layered with the dust tail is the blueish ion-tail which is much narrower and longer, stretching beyond the top of the image. The ion tail shows some slight undulations from changes in the comets activity over time.

#Comet C/2025 A6 #Lemmon in the constellation Boötes, on the evening of October 24th. Captured from the light polluted outskirts of Munich.

16 minutes integration time with my Fujifilm X-S10 and 135mm f4.5 lens (untracked).

#astrophotography 🔭

INTERNATIONAL #ROSETTA MISSION
Target: 67P/CHURYUMOV-GERASIMENKO 1 (1969 R1)
Date: 12 aug 2015 21:21:11 utc
Distance to Target: 329 km
Camera: OSINAC Orange filter
rosetta-osiris.eu/image/NAC_20...

ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA/j. Roger

It's amazing how high-resolution the images from CCOR-1 are.

Comet ATLAS vs CCOR-1

This is cool. While Interstellar Comet 3I/ATLAS is currently 2.35 AU from Earth on the farside of the Sun, it is visible in the CCOR-1 coronagraph aboard NOAA’s GOES-19 satellite. Worachate Boonplod found the +11th magnitude comet in recent images, and traced out its path through CCOR-1’s imager:

Very exciting, I was wondering which comet had passed through the field of view of the C3.

Here is another longer animation of #comet #3I/ATLAS in CCOR-1.

Date: 24 October 2025
Time span: 06:30-15:45

Animation by me.
FITS data source: GOES-19 / CCOR-1 / NOAA

#Comet 3I/ATLAS will soon leave the field of view of CCOR-1.

Date: 24 October 2025
Time span: 06:30-10:45

Animation by me.
FITS data source: GOES-19 / CCOR-1 / NOAA

#CometWatch #3I/ATLAS