Nat. Astron.: "WOH G64 has become a yellow hypergiant"
MNRAS: "No, it hasn't"
π€βοΈππ§ͺ
04.03.2026 02:03 β π 5 π 0 π¬ 0 π 0@saschatrippe.bsky.social
βοΈ Astronomer β MSc, PhD, Professor (κ΅μ) βοΈ Seoul National University / μμΈλνκ΅ βοΈ Black holes, AGN, radio astronomy, VLBI βοΈ Born at 332 ppm COβ βοΈ Trigger warning: math, physics, irony βοΈ Signature: (+,-,-,-)
Nat. Astron.: "WOH G64 has become a yellow hypergiant"
MNRAS: "No, it hasn't"
π€βοΈππ§ͺ
04.03.2026 02:03 β π 5 π 0 π¬ 0 π 0Cochran & Pain 1995, The amount of plutonium and highly-enriched uranium needed for pure fission nuclear weapons
Nun ja, Plutonium sollten wir ja ein paar Tonnen ΓΌbrig haben ...
03.03.2026 22:30 β π 5 π 0 π¬ 1 π 0π
02.03.2026 10:36 β π 2 π 0 π¬ 1 π 0South Korean Police Lose Seized Crypto By Posting Password Online gizmodo.com/south-korean...
01.03.2026 21:52 β π 6 π 2 π¬ 1 π 0Julius-Leber-Kaserne, nehme ich an?
01.03.2026 22:26 β π 1 π 0 π¬ 0 π 0I'm in #19.
01.03.2026 07:07 β π 1 π 0 π¬ 0 π 0What building are you in?
01.03.2026 04:40 β π 0 π 0 π¬ 1 π 0A white, glowing egg-shaped object lies in the centre of the black-and-white image, on a dark, starry background. Glowing streaks spread upwards from the object. In the top left, a yellow arrow marked βSunβ points straight down, and a blue arrow marked βVelocityβ points towards the 7 oβclock direction. In the bottom left, an inset shows the same object on a lighter grey starry background, filled with ragged-edged, concentric egg shapes gradiented black-to-white.
Our first glimpse of comet 3I/ATLAS from Juice's science camera πβοΈ
The precious data from the mission's November observations of the interstellar comet arrived on Earth last week. Teams are now digging in to discover what they reveal.
Stay tuned for updates!
More π www.esa.int/ESA_Multimed...
π π§ͺ
Once upon a time, at Pico Veleta Observatory, the staff called this a "midnight bug": all kinds of strange electronics glitches that happen at midnight (either local or UTC), presumably because some timer deep in some system goes through a discontinuity. π‘
27.02.2026 05:41 β π 2 π 0 π¬ 0 π 0xkcd cartoon "Little Red Dots".
@xkcd.com on fire π
26.02.2026 03:16 β π 24 π 3 π¬ 0 π 0
"... enough to power a toaster, laser printer or gaming computer."
I have questions. π
Interesting point re data centers in space π°οΈ
24.02.2026 01:39 β π 0 π 0 π¬ 0 π 0Nun ja, individuelle Verantwortung besteht, reicht aber nicht weit. Ein nationales Infrastruktursicherheitsgesetz mit klaren technischen Vorgaben (Verwendung quelloffener Software, 2FA, rΓ€umlich weit getrennte Backups, robuste UmzΓ€unung und Bewachung wichtiger Anlagen usw.) wΓ€re besser.
23.02.2026 09:42 β π 3 π 0 π¬ 0 π 0
It's perfectly normal to encounter the idea of datacenters in space and wonder, "Why?" As an aerospace engineer who has been in this industry for ~15 years, let me try to give some historical context:
No one has yet found The Ideaβ’ that makes space-based civilizations a profitable investment. 1/
Wenn asiatische GroΓunternehmen legal in Deutschland investieren, ist das eine gute Sache. Die Kundschaft entscheidet ob Cotti erfolgreich ist oder nicht β nicht irgendwelche "Kritiker".
Dieser Artikel ist eher antikapitalistisches / antichinesisches MeinungsstΓΌck als sachlicher Bericht.
Indeed. It's the only way all of this makes sense.
23.02.2026 02:14 β π 0 π 0 π¬ 0 π 0
This is a portion of the video taken by Perseverance during its touchdown sequence, showing the Skycrane lowering the rover before cutting the bridles and flying away to its destruction.
The video is in real time.
The distance BerlinβMoscow is 1600 km. Apparently, some remarkable scenarios are being discussed behind closed doors. π
19.02.2026 08:10 β π 0 π 0 π¬ 0 π 0
"Bedford Borough Council ... was not responsible for the creation of the moon 4.53 billion years ago."
Message approved. π
Zoom iOS app got upgraded last week. Now every time I touch the time zone settings, it moves the meeting to a different *day*. Not impressed.
18.02.2026 11:23 β π 0 π 0 π¬ 0 π 0German Academic Exchange Service (DAAD) has been banned in Russia. Autocratic governments apparently don't like the free exchange of knowledge. π§ͺ
18.02.2026 09:43 β π 1 π 1 π¬ 1 π 0
So much this.
Other fields have been revolutionized by the wonders ofβ¦Google Scholar, which compared to ADS is hot garbage.
Other fields routinely submit to *multiple* journals, each of which demand major re-writes *before rejecting* papers.
In other fields you often cannot access some papers.
Happy Lunar New Year π
16.02.2026 16:41 β π 1 π 0 π¬ 1 π 0Amazon Prime, "Death PhD" When Ph.D. students are faced with completing their 7-year-long degree program or staying one night in an infamous haunted house to graduate early, some students pay for their decision with the ultimate sacrifice.
"The ultimate sacrifice" being exmatriculation for academic fraud, I presume.
15.02.2026 10:43 β π 0 π 0 π¬ 1 π 0[iPhone system message] Recommended Charge Limit Based on your iPhone habits, a charge limit of 80% is recommended to help preserve your battery.
"Your phone battery works great, as long as you don't actually use it." π€¨
14.02.2026 07:37 β π 2 π 1 π¬ 0 π 0Training and directing others to do research, rather than doing it yourself, is pretty much what university professors do.
14.02.2026 02:05 β π 2 π 0 π¬ 0 π 0