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Ben

@benritchie.co.uk

Astronomer, runner & parkrunner, cyclist. Former developer, day job is now engineering director. London & Sussex, UK.

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30.06.2023
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Latest posts by Ben @benritchie.co.uk

A photo of an ice cream machine with a sign reading, "Anything is possible with ice cream." Beneath that is a hand lettered sign reading, "No ice cream".

A photo of an ice cream machine with a sign reading, "Anything is possible with ice cream." Beneath that is a hand lettered sign reading, "No ice cream".

2026 basically

18.02.2026 16:23 ๐Ÿ‘ 40994 ๐Ÿ” 10914 ๐Ÿ’ฌ 311 ๐Ÿ“Œ 339

A reminder that London is far safer than many major cities, that crime is falling and that racists hate both these truths because they undermine their vicious little divisive narrative.

Multiculturalism works. London works. And those who hate both things hate themselves most of all.

01.12.2025 19:30 ๐Ÿ‘ 697 ๐Ÿ” 214 ๐Ÿ’ฌ 20 ๐Ÿ“Œ 5

I heard there was a secret verse
That David used to make AI worse
But you don't really want to pub that, do ya

30.11.2025 15:36 ๐Ÿ‘ 949 ๐Ÿ” 229 ๐Ÿ’ฌ 4 ๐Ÿ“Œ 0

but your RBAC shouldnโ€™t be

19.11.2025 02:19 ๐Ÿ‘ 145 ๐Ÿ” 16 ๐Ÿ’ฌ 5 ๐Ÿ“Œ 0
A nebula with countless stars of varying brightness and colour scattered across the scene. In the centre, a bright, glowing region is surrounded by swirling clouds of gas and dust in shades of orange, brown, and blue. On the right, reddish gas and dark filaments outline the edge of the nebula.

A nebula with countless stars of varying brightness and colour scattered across the scene. In the centre, a bright, glowing region is surrounded by swirling clouds of gas and dust in shades of orange, brown, and blue. On the right, reddish gas and dark filaments outline the edge of the nebula.

A section of Ara OB1, a stellar association, is visible in this image.

Stellar associations are large groupings of loosely bound stars that have not yet completely drifted away from their initial formation site.

Read more: https://www.eso.org/public/news/eso1510/ ๐Ÿ”ญย 

๐Ÿ“ท ESO
#Flashback

18.11.2025 08:02 ๐Ÿ‘ 65 ๐Ÿ” 19 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1
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For the airplane + red aurora + big dipper fans. ๐Ÿ˜

12.11.2025 06:11 ๐Ÿ‘ 989 ๐Ÿ” 190 ๐Ÿ’ฌ 15 ๐Ÿ“Œ 11

TV conspiracies: weโ€™ve hacked their computers but theyโ€™ve perfectly cleaned up the evidence!

Real conspiracies:
To: conspirator
From: famous person
Attachment: evidence.png

12.11.2025 20:19 ๐Ÿ‘ 8127 ๐Ÿ” 2105 ๐Ÿ’ฌ 60 ๐Ÿ“Œ 78
Post image
24.10.2025 01:27 ๐Ÿ‘ 157 ๐Ÿ” 21 ๐Ÿ’ฌ 7 ๐Ÿ“Œ 0
1
Nurse:
Itโ€™s become a real problem in this area

2
Nurse:
Weโ€™ve seen the whole community lost to addiction

3
Show a building sign posted:
Westminster โ€˜Xโ€™ Addiction Clinic
With various Westminster people or looking at their phones outside it

Nurse:
Ministers, Spads, Researchersโ€ฆ

4
Nurse:
Most mornings weโ€™ll get a call about someone acting strangely 

[Nurse on phone taking a call]
Ok - weโ€™ll be right over

5
Nurse:
We just have a gentle chat 

[Nurses approach a minister โ€“Robert Jenrick? - standing in the Palace of Westminster

Minister:
I understand your concernsโ€ฆ

6
Nurse:
Are you OK love?

Minister:
Yes Iโ€™m just hearing legitimate concerns from real voters

7
Nurse:
Thatโ€™s a robot, a Nazi and a poorly-disguised Russian 

[Show that the people he is talking to are precisely these characters]

Nurse 2:
Give us your phone, love

8
Nurse:
At the clinic we put them in a Grass-Touching Pod, with a real voter to talk to

[We see them back at the clinic, holding the minister's head and pushing him into a glass isolation booth with a grass floor. And it is a baffled looking woman, on a chair, ready to talk to him.]

9
Minister:
YOU MUST BE WORRIED ABOUT THE COMING CIVIL WAR

[woman looks baffled]

10
woman:
I just want a bus service 

Minister:
LOOK AT MY FLAG 
[produces a St George's flag]

[ends]

1 Nurse: Itโ€™s become a real problem in this area 2 Nurse: Weโ€™ve seen the whole community lost to addiction 3 Show a building sign posted: Westminster โ€˜Xโ€™ Addiction Clinic With various Westminster people or looking at their phones outside it Nurse: Ministers, Spads, Researchersโ€ฆ 4 Nurse: Most mornings weโ€™ll get a call about someone acting strangely [Nurse on phone taking a call] Ok - weโ€™ll be right over 5 Nurse: We just have a gentle chat [Nurses approach a minister โ€“Robert Jenrick? - standing in the Palace of Westminster Minister: I understand your concernsโ€ฆ 6 Nurse: Are you OK love? Minister: Yes Iโ€™m just hearing legitimate concerns from real voters 7 Nurse: Thatโ€™s a robot, a Nazi and a poorly-disguised Russian [Show that the people he is talking to are precisely these characters] Nurse 2: Give us your phone, love 8 Nurse: At the clinic we put them in a Grass-Touching Pod, with a real voter to talk to [We see them back at the clinic, holding the minister's head and pushing him into a glass isolation booth with a grass floor. And it is a baffled looking woman, on a chair, ready to talk to him.] 9 Minister: YOU MUST BE WORRIED ABOUT THE COMING CIVIL WAR [woman looks baffled] 10 woman: I just want a bus service Minister: LOOK AT MY FLAG [produces a St George's flag] [ends]

19.10.2025 15:07 ๐Ÿ‘ 3366 ๐Ÿ” 1571 ๐Ÿ’ฌ 30 ๐Ÿ“Œ 90
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This sadly demented man doesn't realize *he* was president on Jan 6, 2021. Get him in an assisted living facility ASAP.

12.10.2025 13:58 ๐Ÿ‘ 20791 ๐Ÿ” 6709 ๐Ÿ’ฌ 1346 ๐Ÿ“Œ 469
Goody-bag merch from Tory Conference branded "When Labour negotiates Britian loses" and signed "Kemi Badenoch".

Goody-bag merch from Tory Conference branded "When Labour negotiates Britian loses" and signed "Kemi Badenoch".

It helps to be able to spell the country you say only you are competent enough to run.

06.10.2025 14:06 ๐Ÿ‘ 2991 ๐Ÿ” 918 ๐Ÿ’ฌ 260 ๐Ÿ“Œ 170
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Way past its prime: how did Amazon get so rubbish? Sick of scrolling through junk results, AI-generated ads and links to lookalike products? The author and activist behind the term โ€˜enshittificationโ€™ explains whatโ€™s gone wrong with the internet โ€“ and ...

This is so good from Cory Doctorow on all the tricks Amazon uses to get both consumers to pay more, and how businesses on the platform end up paying it 45-51 cents on every dollar.

Plus he rightly calls for regulatory change, not just individual consumer action
www.theguardian.com/technology/2...

05.10.2025 08:19 ๐Ÿ‘ 242 ๐Ÿ” 126 ๐Ÿ’ฌ 10 ๐Ÿ“Œ 13

WHAT YOU FAIL TO SEE MR POPE

02.10.2025 11:37 ๐Ÿ‘ 6593 ๐Ÿ” 1094 ๐Ÿ’ฌ 126 ๐Ÿ“Œ 70
Preview
Trump Spends Entire U.K. Trip Trying To Figure Out Where He Knows Prince Andrew From LONDONโ€”Claiming that he recognized the member of the royal family, but his memory was hazy, President Donald Trump has spent his entire trip to the U.K. trying to figure out where he knows Prince Andr...

Trump Spends Entire U.K. Trip Trying To Figure Out Where He Knows Prince Andrew From

18.09.2025 16:00 ๐Ÿ‘ 12786 ๐Ÿ” 3085 ๐Ÿ’ฌ 174 ๐Ÿ“Œ 165

If you're new to the Unix or Linux command line, I just want you to know:

Me and all my colleagues with years of experience

Still get confused between `ln -s` and `ln` daily.

31.08.2025 17:36 ๐Ÿ‘ 299 ๐Ÿ” 26 ๐Ÿ’ฌ 30 ๐Ÿ“Œ 6
A circular roadside mirror reflecting the image of a large astronomical observatory dome. The sky glows with bands of green airglow and orange light near the horizon.

A circular roadside mirror reflecting the image of a large astronomical observatory dome. The sky glows with bands of green airglow and orange light near the horizon.

Flashback: A mirror shows a reflection of one of the telescopes located at La Silla Observatory, with an incredible background view of the Milky Way galaxy and the sunrise.

Read more: https://www.eso.org/public/images/IMG_0047-CC/

๐Ÿ“ท Sangku Kim/ESO ๐Ÿ”ญ

12.08.2025 07:02 ๐Ÿ‘ 37 ๐Ÿ” 3 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 1
Warm, Encouraging Email From CEO Quickly Identified As Phishing Attempt

Warm, Encouraging Email From CEO Quickly Identified As Phishing Attempt

Warm, Encouraging Email From CEO Quickly Identified As Phishing Attempt theonion.com/warm-en...

07.08.2025 15:00 ๐Ÿ‘ 1957 ๐Ÿ” 250 ๐Ÿ’ฌ 18 ๐Ÿ“Œ 6

Me as an individual developer: โ€œWhat do project managers do, exactly?โ€

Me managing a huge project: โ€œOh. OH. This is really hardโ€ฆโ€

06.08.2025 04:00 ๐Ÿ‘ 20 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

it has been said over and over but itโ€™s worth reiterating in the face of this horrifying decision: RFK is quite literally joining the war on cancer on the side of cancer

06.08.2025 02:47 ๐Ÿ‘ 6854 ๐Ÿ” 2028 ๐Ÿ’ฌ 106 ๐Ÿ“Œ 49

I remember my father bringing one of these home, probably late 1984. It weighed something like 30 pounds and I couldnโ€™t lift it off the floor. Even had a 5MB (?) hard disk installed.

He had to carry it on the train to and from the office, until it was eventually replaced with a IBM PC Convertible.

04.08.2025 06:37 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
An infographic titled "How BIG are the BLACK HOLES we find with GRAVITATIONAL WAVES?" by @astronerdika. The graphic displays a range of black hole masses detected via gravitational waves, categorized by their size in solar masses (mass of the Sun) and represented with playful cat-like black hole illustrations.

The categories from left to right are:

1. "<5 times the mass of the Sun"
- Labeled "smol"
- Very small black hole illustration represented by a curled up black cat
- Arrow pointing left: "THIS WAY TO NEUTRON STARS"
- Example: "Big component of GW230529 (~3.6 times the mass of the Sun)"

2. "~10 times the mass of the Sun"
- Labeled "basic"
- Slightly larger black hole cat illustration
- Caption: "LOTS OF BLACK HOLES"

3. "~35โ€“45 times the mass of the Sun"
- Labeled "hefty"
- Bigger black hole cat illustration
- Continues the idea of a populated range

4. ">60 times the mass of the Sun"
- Labeled "chonky"
- Large black hole cat illustration
- Caption: "FORBIDDEN TERRITORY? (can these even be made from the collapse of star cores?!)"
- Example: "Components of GW190521 (~85 + ~66 times the mass of the Sun)"

5. ">100 times the mass of the Sun"
- Labeled "oh lawd"
- Very large, curled-up black hole cat illustration
- Arrow pointing right: "THIS WAY TO INTERMEDIATE MASS BLACK HOLES"
- Example: "Components of GW231123 (~137 + ~103 times the mass of the Sun)"

Below the categories is a stylized black curve representing the inferred population of black holes detected by LIGO-Virgo-KAGRA. It rises sharply in the "basic" range and falls off toward the "hefty" and "chonky" ranges, with a note reading:
"this curve is an artistic representation of the black hole population inferred by LIGO-Virgo-KAGRA."

This infographic draws from the โ€œChonky Catโ€ meme.

An infographic titled "How BIG are the BLACK HOLES we find with GRAVITATIONAL WAVES?" by @astronerdika. The graphic displays a range of black hole masses detected via gravitational waves, categorized by their size in solar masses (mass of the Sun) and represented with playful cat-like black hole illustrations. The categories from left to right are: 1. "<5 times the mass of the Sun" - Labeled "smol" - Very small black hole illustration represented by a curled up black cat - Arrow pointing left: "THIS WAY TO NEUTRON STARS" - Example: "Big component of GW230529 (~3.6 times the mass of the Sun)" 2. "~10 times the mass of the Sun" - Labeled "basic" - Slightly larger black hole cat illustration - Caption: "LOTS OF BLACK HOLES" 3. "~35โ€“45 times the mass of the Sun" - Labeled "hefty" - Bigger black hole cat illustration - Continues the idea of a populated range 4. ">60 times the mass of the Sun" - Labeled "chonky" - Large black hole cat illustration - Caption: "FORBIDDEN TERRITORY? (can these even be made from the collapse of star cores?!)" - Example: "Components of GW190521 (~85 + ~66 times the mass of the Sun)" 5. ">100 times the mass of the Sun" - Labeled "oh lawd" - Very large, curled-up black hole cat illustration - Arrow pointing right: "THIS WAY TO INTERMEDIATE MASS BLACK HOLES" - Example: "Components of GW231123 (~137 + ~103 times the mass of the Sun)" Below the categories is a stylized black curve representing the inferred population of black holes detected by LIGO-Virgo-KAGRA. It rises sharply in the "basic" range and falls off toward the "hefty" and "chonky" ranges, with a note reading: "this curve is an artistic representation of the black hole population inferred by LIGO-Virgo-KAGRA." This infographic draws from the โ€œChonky Catโ€ meme.

Heard the latest news from the LIGO-Virgo-KAGRA collaboration? We detected the collision of the most massive pair of black holes so far: #GW231123 weighing in at ~137 + ~103 times the mass of the Sun!

So to celebrate, hereโ€™s a handy chart โœจ

Just how chonky are these black holes? ๐Ÿค”

26.07.2025 10:42 ๐Ÿ‘ 535 ๐Ÿ” 151 ๐Ÿ’ฌ 15 ๐Ÿ“Œ 15
A star field set against a glowing red and orange nebula. Bright, bluish-white stars dominate the scene. Scattered throughout the image are dark, irregular-shaped clouds of gas and dust.

A star field set against a glowing red and orange nebula. Bright, bluish-white stars dominate the scene. Scattered throughout the image are dark, irregular-shaped clouds of gas and dust.

Dive into this spectacular image of the stellar nursery IC 2944!

You see those thick clouds of dust? They are being bombarded by the UV radiation from nearby stars, and are likely to be destroyed before they can collapse and form new stars.

04.07.2025 07:02 ๐Ÿ‘ 68 ๐Ÿ” 14 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 0
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I imagined the Chatsubo in 1984. 41 years later I opened its door. Neuromancer is in production.

01.07.2025 19:14 ๐Ÿ‘ 7342 ๐Ÿ” 1880 ๐Ÿ’ฌ 307 ๐Ÿ“Œ 675
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Scientists at Loughborough University create 'world's smallest violin' The violin is smaller than a human hair and has "laid the groundwork" for future research.

Well this couldnโ€™t have come at a better time www.bbc.com/news/article...

05.06.2025 21:08 ๐Ÿ‘ 10834 ๐Ÿ” 3141 ๐Ÿ’ฌ 122 ๐Ÿ“Œ 202
An article titled "How the Web Became Unreadable", posted on Medium. There is a soft paywall asking you to sign in, covering most of the article.

Screenshot found on Mastodon https://beige.party/@mayintoronto/114497234942335666

An article titled "How the Web Became Unreadable", posted on Medium. There is a soft paywall asking you to sign in, covering most of the article. Screenshot found on Mastodon https://beige.party/@mayintoronto/114497234942335666

14.05.2025 00:23 ๐Ÿ‘ 17650 ๐Ÿ” 6391 ๐Ÿ’ฌ 7 ๐Ÿ“Œ 247

If you want to catch up on the new pope, this thread is the wildest ride.

Because at any time like this for world news what everyone needs is a nerd whose wheelhouse it is livetweeting the process of finding out.

09.05.2025 00:03 ๐Ÿ‘ 122 ๐Ÿ” 26 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 0
This cluster of stars is known as Messier 15, and is located some 35,000 light-years away in the constellation of Pegasus (The Winged Horse). It is one of the oldest globular clusters known, with an age of around 12 billion years. This new image is made up of observations from Hubble's Wide Field Camera 3 and Advanced Camera for Surveys in the ultraviolet, infrared, and optical parts of the spectrum. (NASA, ESA)

This cluster of stars is known as Messier 15, and is located some 35,000 light-years away in the constellation of Pegasus (The Winged Horse). It is one of the oldest globular clusters known, with an age of around 12 billion years. This new image is made up of observations from Hubble's Wide Field Camera 3 and Advanced Camera for Surveys in the ultraviolet, infrared, and optical parts of the spectrum. (NASA, ESA)

Figure 1. Comparing two theoretical isochrones we constructed with different ages, MC parameters, distance, and reddening. The observational data for M15 is plotted in the background, with photometric uncertainty estimated from the AS test plotted on the right.

Figure 1. Comparing two theoretical isochrones we constructed with different ages, MC parameters, distance, and reddening. The observational data for M15 is plotted in the background, with photometric uncertainty estimated from the AS test plotted on the right.

This is the globular cluster M15, imaged by Hubble. It's a great target for binoculars or backyard telescopes, in the constellation Pegasus.

Jiaqi Ying et al. measured M15's age with 3% precision. This group of stars formed *immediately* after the Universe did.

arxiv.org/abs/2505.02969

๐Ÿ”ญ๐Ÿงช #stars

07.05.2025 16:13 ๐Ÿ‘ 232 ๐Ÿ” 35 ๐Ÿ’ฌ 4 ๐Ÿ“Œ 4

I feel really stupid asking again

07.05.2025 01:28 ๐Ÿ‘ 9083 ๐Ÿ” 1357 ๐Ÿ’ฌ 220 ๐Ÿ“Œ 27
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Pete Hegseth: โ€˜There Are No State Secrets In A Healthy Relationshipโ€™ WASHINGTONโ€”Staunchly defending his decision to share sensitive military data in messages to his wife, Defense Secretary Pete Hegseth told reporters Monday, โ€œThere are no state secrets in a healthy rel...

Pete Hegseth: โ€˜There Are No State Secrets In A Healthy Relationshipโ€™

21.04.2025 18:57 ๐Ÿ‘ 10323 ๐Ÿ” 1234 ๐Ÿ’ฌ 190 ๐Ÿ“Œ 85