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Jacco Vink

@jaccovink.bsky.social

X-ray & gamma-ray astrophysicist at the @api.uva.nl and @grappainstitute.bsky.social at the @uva.nl. Book author of "Physics and Evolution of Supernova Remnants" published by @springer1842.bsky.social.

145 Followers  |  154 Following  |  83 Posts  |  Joined: 18.11.2024  |  2.2382

Latest posts by jaccovink.bsky.social on Bluesky

There is an important conversation that should be going on (maybe at the UN level?) about this, as it will become worse with time (as more satellites are orbited).

Nations worked together to build the Montreal Protocol to protect the Ozone Layer.

These constellations threaten all of that work.

06.10.2025 23:55 β€” πŸ‘ 107    πŸ” 39    πŸ’¬ 3    πŸ“Œ 0
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1 to 2 Starlink satellites are falling back to Earth each day

"There are currently one to two Starlink satellites falling back to Earth every day ... Soon, McDowell told us, there will be up to 5 satellite reentries per day." 😳

05.10.2025 19:00 β€” πŸ‘ 583    πŸ” 289    πŸ’¬ 48    πŸ“Œ 81
Laurel & Hardy - Dance Routine - Way Out West (1937)
YouTube video by Gian Laurel & Hardy - Dance Routine - Way Out West (1937)

Was it inspired by the dance of two other true friends?https://youtu.be/LXCwlO2jnYU?si=BTs7BXowSs154760

03.10.2025 23:39 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

BREAKING: Our client Mario Guevara, an Emmy-winning journalist detained by ICE in retaliation for livestreaming law enforcement activity, will be deported tomorrow to El Salvador.

Mario and his family are being punished for his reporting. This cruelty is meant to stifle our free press.

02.10.2025 22:42 β€” πŸ‘ 32285    πŸ” 15543    πŸ’¬ 655    πŸ“Œ 736

These towers surround Gaza's Roman Cemetery β€” an ancient intact burial site with 125 tombs that was discovered in 2022. @premiereurgenceint.bsky.social worked on the site before the war: www.theartnewspaper.com/2023/07/26/r...

Can see the site in a video from 2023: www.youtube.com/watch?v=VStQ...

29.09.2025 14:02 β€” πŸ‘ 107    πŸ” 53    πŸ’¬ 5    πŸ“Œ 7

Prijsverschillen kunnen, maar waarom wrijft de Hema het zo in? Te krenterig om twee labeltjes te maken voor de twee markten?

29.09.2025 09:42 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Hij bedoelt niet dat steden niet veilig zouden zijn maar te democratisch. Sowieso schrappen: straks worden voetballers en supporters nog door ICE opgepakt. Trump zelf bedreigt de veiligheid.

26.09.2025 13:20 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Pritzker: "One of the reasons Trump wants to send troops into cities is bc he wants to be able to take control of the 2026 elections...if they've got troops in cities, & it becomes a kind of norm for people, then it won't be abnormal for them when they're going to vote having troops at ballot boxes"

23.09.2025 13:51 β€” πŸ‘ 9270    πŸ” 3504    πŸ’¬ 201    πŸ“Œ 238
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That Time Ulysses S. Grant Met Otto von Bismarck in Berlinβ€”and Talked About the Civil War The conversation between the former president and the Prussian prince was more than just pleasantries.

www.historynet.com/encounter-ul...

22.09.2025 14:12 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I am think here on what general Grant told Bismarck: " A great commander [...] might have organized an army and put down the rebellion in six months or a year [...]. But that would have saved slavery, perhaps, and slavery meant the germs of new rebellion. There had to be an end of slavery."

22.09.2025 14:11 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

So without those "fire-eaters" there could have been a compromise, but would that have meant that by 1865 slavery would still not have been abolished? So perhaps these "fire-eaters" played the role Judas played in Bible: necessary actors fulfill what was coming.

22.09.2025 14:10 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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De reactie van gematigd rechts op rechtsextremisme bepaalt hoe het de democratie vergaat In de VS wordt de cancelcultuur van Donald Trump geholpen door bedrijven. In Nederland is het de VVD die extreemrechts normaliseert.

www.volkskrant.nl/columns-opin...

21.09.2025 23:34 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

If not stopped. This will effectively finish killing the research and teaching infrastructure of universities in the US

20.09.2025 00:08 β€” πŸ‘ 27    πŸ” 9    πŸ’¬ 2    πŸ“Œ 0
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Dutch late night TV has its take

19.09.2025 14:39 β€” πŸ‘ 21022    πŸ” 9025    πŸ’¬ 520    πŸ“Œ 2102
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Beelden van Chinees toilet gaan viraal: pas na bekijken reclame een paar velletjes wc-papier In Nederland vinden we het heel normaal om een reclame te bekijken voordat we een video op YouTube kunnen zien. In China is dit reclamemodel ook op andere plekken ingevoerd: een toiletpapierdispenser ...

In China wordt de term enshitification wel heel letterlijk genomen….

Beelden van Chinees toilet gaan viraal: pas na bekijken reclame een paar velletjes wc-papier www.ad.nl/buitenland/b...

17.09.2025 06:54 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Is it Bill Clinton?

07.09.2025 08:23 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

"the promise of the 14th Amendment was derailed by white supremacist violence, congressional inaction, and hostile Supreme Court rulings. " Sounds familiar...

05.09.2025 13:27 β€” πŸ‘ 5    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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ERC Starting Grant voor astronomen Ziggy Pleunis (UvA) en Tim Lichtenberg (RUG)

ERC Starting Grant voor astronomen Ziggy Pleunis (UvA) en Tim Lichtenberg (RUG)

www.astronomie.nl/nieuws/erc-s...

@erc.europa.eu

04.09.2025 10:03 β€” πŸ‘ 4    πŸ” 3    πŸ’¬ 0    πŸ“Œ 1
The main panel of this graphic is Chandra data that has been selected to show the location of different elements in the remains of the explosion: silicon (red), sulfur (yellow), calcium (green) and iron (purple). The blue color reveals the highest-energy X-ray emission detected by Chandra in Cas A, with the blue outer ring highlighting the expanding blast wave from the original explosion hundreds of years ago.

The inset to the upper left zooms in a smaller region of Cas A. This reveals data collected by Chandra that picks up relative amounts of silicon and neon.

The main panel of this graphic is Chandra data that has been selected to show the location of different elements in the remains of the explosion: silicon (red), sulfur (yellow), calcium (green) and iron (purple). The blue color reveals the highest-energy X-ray emission detected by Chandra in Cas A, with the blue outer ring highlighting the expanding blast wave from the original explosion hundreds of years ago. The inset to the upper left zooms in a smaller region of Cas A. This reveals data collected by Chandra that picks up relative amounts of silicon and neon.

29.08.2025 14:49 β€” πŸ‘ 3    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
Chandra Press Room :: NASA's Chandra Reveals Star's Inner Conflict Before Explosion :: 28 August 2025

About 26 years ago, the Chandra X-ray Observatory released its "First Light" images. The supernova remnant Cassiopeia A was the highlight. All of these years later, Chandra is still delivering discoveries about this exploded star.
chandra.si.edu/press/25_rel...

29.08.2025 14:44 β€” πŸ‘ 1    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0

Auteur is russisch, dus taalfout is van de vertaler. Gezien het anglicisme is het uit het engels vertaald. Des te erger eigenlijk, want een vertaler moet zijn vak beheersen, en daarna ook alles nog eens goed controleren ;)

28.08.2025 22:27 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Where is Sancho Panza when you need him?

26.08.2025 17:34 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

The research on electric and magnetic fields made it necessary.

23.08.2025 16:57 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

For the EU, this should be a very urgent matter of national security. All EU member states should build on Denmark's wise strategy to phase out Microsoft products

23.08.2025 08:05 β€” πŸ‘ 1385    πŸ” 654    πŸ’¬ 23    πŸ“Œ 54

Ja Femke Wiersma schrijft de miljoenen nota, maar kondigt op prinsjesdag aan dat ze tot januari wacht om vervolgens de volgende Prinsjesdag door te schuiven naar 2036.

22.08.2025 22:02 β€” πŸ‘ 12    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Nee dan de "continentale" filosoof Heidegger: na hem "is er geen Europese filosoof meer geweest die zijn statuur ook maar heeft benaderd." Heidegger was inderdaad geen (neo)liberaal, maar een Nazi.

21.08.2025 21:27 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

"Volgens [Schuringa] is die de filosofie geworden van de neo-liberale gevestigde orde, die iedere vorm van β€˜gevaarlijke’ en ondermijnende filosofie onderdrukt en koloniseert."

21.08.2025 21:27 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Slavery didn't end because of democracy or a system of government. It took a civil war to end it. The war itself started because southern states didn't acknowledge democracy.

20.08.2025 20:16 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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β€˜Speciale eenheid van IsraΓ«lische leger belast met het framen van journalisten als Hamasstrijders’

β€˜Speciale eenheid van IsraΓ«lische leger belast met het framen van journalisten als Hamasstrijders’

16.08.2025 09:15 β€” πŸ‘ 56    πŸ” 40    πŸ’¬ 8    πŸ“Œ 7
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Fascinating, but also very slimy: two leppard slugs mating. #slugs #mating

14.08.2025 21:00 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

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