Knud Jahnke
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knudjahnke.bsky.social
Knud Jahnke
@knudjahnke.bsky.social
Astronomer, Euclid Consortium functionary; likes black holes, galaxies, and sustainable research.
And now the protons are coming in. Whow!

(Of course, #ESAEuclid has a mode for dealing with so many protons. In case of doubt it just goes into some hold position and only carries on after that. All fine.)
November 12, 2025 at 7:24 AM
Let me point you to a public talk – that has a video recording – to show a bit more of what we saw in early #ESAEuclid data.

If your German isn't up to speed then you might have to add auto-dubbed subtitles, sorry!

youtu.be/2x0W2ZggU1M?...
38C3 - Euclid, das Weltraumteleskop - 180 Millionen Galaxien sind ein guter Anfang
YouTube video by media.ccc.de
youtu.be
November 11, 2025 at 7:21 PM
In one basket that probably doesn't even exist.
November 11, 2025 at 7:13 PM
Yeah, this was from an M-class flare in late 2023, so imagine 10x more protons:
November 11, 2025 at 7:11 PM
Let me tell you, our officially-not-an-X-ray-telescope #ESAEuclid did notice this flare. Very much so. A gazillion cosmic ray hits, plus a shadow of hardware where the instruments aren't fully X-ray shielded.

I mean this was the 39th (?) strongest flare in 30 years.
November 11, 2025 at 7:05 PM
That colour is so Yellow 5 (E102, Tartrazine) and Blue 1 (E133).
November 8, 2025 at 11:09 AM
Yes, that really wants me to read the paper. Thank you! :-)
November 7, 2025 at 7:21 AM
Is there impact on the whole galaxy? Or little global impact? Or do I have to wait for the paper? 🥺
November 6, 2025 at 7:46 PM
I also said that this week, after this announcement:

fortune.com/2025/11/05/m...
‘Big Short’ investor Michael Burry has a $1.1 billion bet against AI stocks, and markets are plunging | Fortune
Wall Street expects tech stocks to take a hammering this morning—again.
fortune.com
November 6, 2025 at 7:40 PM
SOOOO FLUFFY! Now I have to spend the next hour staring at mom and kid seal.
November 6, 2025 at 12:09 PM
Reposted by Knud Jahnke
Here's a cutout, this is about 1% of the full image. Young stars, dust and gas being blown out, a lot is going on. The #ESA page has in-depth explanations.

#stars #starformation #astronomy

6/
November 5, 2025 at 10:42 AM
Reposted by Knud Jahnke
The second image released today is by the EC and @esa.int, of the 'Dark Cloud' LDN 1641 – a near-infrared colour view through thick dust by #Euclid's NISP instrument:

www.esa.int/ESA_Multimed...

#space #astronomy

4/
Euclid peers through a dark cloud’s dusty veil
www.esa.int
November 5, 2025 at 9:21 AM
Take the German system: fixed fraction of salary goes to med insurance, matched by employer. No lock-in to some system, no dependency on job (if unemployed your insurance is covered). Funds everything but some minimal copay. Works.
November 4, 2025 at 10:14 PM
I guess in that administration you have to grift periodically if you don't want to get fired.
October 30, 2025 at 12:31 PM
I think CO2 is a leftists ruse, the real thing is CO!1!! It will end all of the described illnesses. Permanently.
October 23, 2025 at 7:29 PM
Meine Apothekarin sagte, neben Corona und Grippe sollte ich meine MMR-Auffrischung nicht parallel machen, weil die alleine häufiger ein Hammer ist - wegen Lebendimpfung. Also nur 2 und MMR dann demnächst.
October 23, 2025 at 10:36 AM
No, this also is 50% distraction. The core approach and goals of Project 2025 are being implemented step by step. Don't be distracted by the not-so-clever clowns that are put in the limelight.
October 22, 2025 at 3:17 PM