Remco de Kok

My dad's dad grew vegetables in a glass house. My mother's dad worked at a bank (I think?). I looked up my ancestors from both sides and it's basically all gardeners, builders, and farm hands 6 generations deep.

When someone says „Scientists do not want you to know“ you can dismiss everything from there on. Scientists want you to know. They are desperate that you know. They can’t shut up about what they found out and want you to know.

Het is misschien ook deels omdat de cirkels niet in hetzelfde perspectief staan? Zijn ovaaltjes of 'gekantelde' vierkantjes beter?

Amazing weather here. At least there's that.

Similar here this week!

Beautiful diagrams from a circa 17th-century copy of Muslim polymath Ismail al-Jazarī’s *Book of Knowledge of Ingenious Mechanical Devices*, originally published in 1206: https://publicdomainreview.org/collection/arabic-machine-manuscript

CNN reporting that the strikes on Iran tonight are joint US and Israeli strikes.

Which means Donald Trump should be impeached for a third time.

What he has done tonight is illegal under the US constitution and the UN charter.

The state of the world matches the state of my brains these last few years....

"Seems" is my favourite word, because so many things seem so subjective to me.

It seems like most of the noticeable technological advancements of the last decades are in software, not so much in hardware. Cars, houses, trains,... pretty much look the same. Drones are the exception I guess. And the size of mobile phones? Or am I missing stuff?

It is time we stop this madness. Just because you can, doesn't mean you should. We have to stop these billionaires ruining our planet.

Spaanse programmeur krijgt per ongeluk het gezag over een leger van robotstofzuigers

Heerlijke kop :)

Still writing "planet" instead of "plant". It's deeply engrained.

"De bijna blinde Rohingya-vluchteling Nurul Amin Shah Alam, die nauwelijks Engels spreekt, wordt door Border Patrol opgepakt en later vrijgelaten bij een tankstation in Buffalo, 7 kilometer van zijn huis, zonder telefoon, vervoer (...). Enkele dagen later wordt hij dood op straat aangetroffen." 💔

Image of blue bands/spots and a violet extended spot near the lower-left lib

No spots or bands. 3.26 to 3.36 Microns

Emission at 4.35 Microns. Likely aurora.

(1/2)
Planet #Neptune with #JWST NIRSpec. Observation date: 2025-11-27

First image (color) is a combination of blue (2.88 to 3.1 Microns) and orange (4.21 to 5.02 Microns) with emission around 4.35 Microns (aurora H3+ emission) in violet.

The Nordic Excluded.

Werk! Op de afdeling van @ionica.mathstodon.xyz.ap.brid.gy en deels op de Sterrewacht Leiden careers.universiteitleiden.nl/job/Assistan...

A red-white striped parachute seen from below against a reddish-grayish sky.

The perseverance heatshield falling away towards the surface of Mars. The inside is black and has serveral orange cables running across. around the perimeter are eight spiral springs that helped to push the heatshield away.

The Perseverance rover as seen from the skycrane above, dangling from three ropes and a cable umbilical. The Red Mars dust from the surface is getting blown away where the plume from the skycrane hits the the martian surface. The rover deck is still remarkably clean as compared to later in the mission.

The skycrane from below, partially obscured by Mars dust and small rocks it flies away. Each of the four corners has a pair of thrusters and the umbilical cable that has just been cut is curled up below the skycrane.

I can't believe it has already been 4 years since the Perseverance rover landed on Mars! #planetsci

The rover was equipped with six engineering camera that captured more than 26.000 images during the landing!

This thread contains some of my favorites:

Starting this Friday, four separate #JWST programmes will be exploring physical processes in Jupiter's atmosphere and ionosphere. We're asking amateur astronomers to help provide context imaging over the next few weeks to understand how the atmosphere is changing with time. #planetaryscience

This is also because they let more water flow through the rivers, which have been dried up in recent decades. It's not like they are planting trees throughout the desert. See e.g. some promo here en.people.cn/n3/2025/0930...
It's a fascinating area, I think.

It's great, but it would be nice to see credits.

Cloud!

Book cover "Human body decomposition "

Lol, I had this one once.

This...

Possible orbits for the exoplanet 51 Eri b drawn around the star, along with the planet at two locations in its orbit showing a dayside illuminated disk and a nightside disk.

Oh now this is VERY cool! Denis+ on “Cold and eccentric: a high-spectral resolution view of 51 Eri b with
VLT/HiRISE” where radial velocity measurements of the exoplanet enable a determination of the 3D orbit, and therefore you can calculate the PHASE as seen by Earth! #astrodon #exoplanet ☄

Origin of Hyperion and Saturn's Rings in A Two-Stage Saturnian System Instability The age of the rings and some of the moons of Saturn is an open question, and multiple lines of evidence point to a recent (few hundred Myr ago) cataclysm involving disruption of past moons. The main ...

Hey let’s talk about cool science for once! 🧵

A new paper is out showing something that’s been discussed for about a decade…Titan may have originally been multiple Titan-ish objects that merged!

And it may have even happened recently!

Here’s the new paper: arxiv.org/abs/2602.09281

Why do we do astrophysics? At time of writing, large language models (LLMs) are beginning to obtain the ability to design, execute, write up, and referee scientific projects on the data-science side of astrophysics. What implic...

David Hogg has written a white paper on doing astrophysics in the age of LLMs. It looks to be thought-provoking. My initial reaction is that either LLMs will destroy the field or they will force a reckoning with and re-imagining of the current system that often prioritizes output over quality. 🧪

Was their partner in the cc, reading along? (Oh hello dear!)

Anything fancy with these suits tends to be aerodynamics related. I guess this is the outside leg when going through a corner, which will be exposed and have the higher speed. They tend to want to break laminar flow to reduce resistance, like with golf balls.
That's my guess, but not 100% sure.

Blooming crocus.

Spriiiing!