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Cristóbal Sifón

@csifon

Astrophysicist. Dark matter, galaxies and clusters through optical/submm/other wavelengths.

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05.01.2025
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Latest posts by Cristóbal Sifón @csifon

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Esta columna de Matamala va al meollo del proyecto que 23 senadores de derecha de la coalición de Kast, votaron a favor y esperan avanzar para que sea ley: Liberar a 12 mil de los más peligrosos criminales, es solo un "daño colateral" para liberar a los psicopatas ya privilegiados de Punta Peuco:

08.03.2026 16:30 👍 28 🔁 29 💬 2 📌 0

For all the but how can we afford space exploration folks…this means we’ve already spent more on this war that started last week than Cassini cost in the 26 years it took to build, launch, and operate it.

04.03.2026 20:41 👍 1488 🔁 546 💬 7 📌 7

just thinking about how USAID was dismantled under the rationale of cost savings but there's an unlimited budget for war

04.03.2026 06:43 👍 1933 🔁 483 💬 36 📌 24

It's funny to read this from the other hemisphere where it has been a full 2 days since the semester started (the todo list leftover from three months ago says hi)

04.03.2026 00:20 👍 2 🔁 0 💬 1 📌 0

No shit

22.02.2026 16:11 👍 1 🔁 0 💬 0 📌 0

The National Science Foundation’s entire budget is $10 billion.

21.02.2026 18:02 👍 933 🔁 376 💬 11 📌 9

If you think about it, the very best books are really just extremely long spells that turn you into a different person for the rest of your life

16.02.2026 18:21 👍 469 🔁 70 💬 7 📌 5
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La semana pasada y sin ninguna cobertura de medios de comunicación, se desarrolló el Campeonato #Nacional de #Ajedrez de Menores 2026 en Santiago, en el que participaron más de 500 deportistas entre 6 y 18 años. Un gran evento que merece mayor difusión!

12.02.2026 22:14 👍 0 🔁 0 💬 0 📌 0

Paid for by @theonion.com

10.02.2026 18:30 👍 0 🔁 0 💬 0 📌 0

I have read this 20 times, have checked that the author is reputable anither 20, and still cannot believe this would be real

19.01.2026 14:27 👍 1 🔁 0 💬 0 📌 0

Robots have mirror neurons too

28.12.2025 01:01 👍 1 🔁 0 💬 0 📌 0
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another robot highlight for 2025: man wearing humanoid mocap suit kicks himself in the balls

27.12.2025 17:27 👍 47046 🔁 14486 💬 953 📌 3136
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a dog is walking on a wooden floor with a dogcore logo on the back ALT: a dog is walking on a wooden floor with a dogcore logo on the back

The semester. is. over.

12.12.2025 15:04 👍 1 🔁 0 💬 0 📌 0

For comparison, every robotic mission NASA has ever sent in its history, from the dawn of the Space Age 65 years ago to today, from Mercury to Pluto and beyond, has cost less than $40B.

I know which one has done more for humankind and which one should be dismantled.

07.12.2025 02:03 👍 2133 🔁 709 💬 26 📌 14
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Fifteen Years

i’m not crying you’re crying

xkcd: Fifteen Years

25.11.2025 01:58 👍 5038 🔁 1347 💬 77 📌 142

The Winter Fortress by Neal Bascomb is really good

19.11.2025 23:34 👍 0 🔁 0 💬 0 📌 0

Oh-oh not again

15.11.2025 03:43 👍 1 🔁 0 💬 0 📌 0

There's no falling below going from "Trump has nothing to do with this pedophile" to "He was not the *bad* kind of pedophile, you know?" and expecting people to go "oh, ok"

[Narrator in a few months: Yes, there was...]

13.11.2025 23:59 👍 1 🔁 1 💬 0 📌 0
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James Watson, dead at 97, was a scientific legend and a pariah among his peers James Watson, the co-discoverer of the structure of DNA who died Thursday at 97, was a scientific legend and a pariah among his peers.

A Sharon Begley byline, almost 5 years after her death.

Upon hearing the news James Watson had died, a STAT reporter said in our Slack, "I wish I could read what Sharon would have written."

Incredible news: Sharon in fact did pre-write a Watson obit. And it is masterful and excoriating.
🧪🧬🧫

08.11.2025 13:39 👍 6037 🔁 1983 💬 112 📌 340
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my god, what a paragraph

(from tonight's @hcrichardson.bsky.social)

31.10.2025 04:51 👍 3394 🔁 1272 💬 59 📌 41

Excelente experiencia la exhibivión de Van Gogh en el Mall Marina en Viña, hasta los niños se entretuvieron con la historia inmersiva y el recorrido de realidad virtual ⭐⭐⭐⭐⭐

28.09.2025 22:20 👍 0 🔁 0 💬 0 📌 0
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It’s hard to get someone to understand something when their salary depends on NOT understanding it.
 
Well, the Republican Party depends on fossil fuel money.

14.09.2025 02:09 👍 1046 🔁 335 💬 31 📌 15
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Melt Pizzas comprando comentarios positivos

30.07.2025 14:44 👍 1 🔁 0 💬 0 📌 0
Login • Instagram Welcome back to Instagram. Sign in to check out what your friends, family & interests have been capturing & sharing around the world.

Por enésima vez, astrónomo de Harvard: No hay evidencia de tecnologías extraterrestres y 3I/ATLAS no es tecnología avanzada. Estos sinsentidos generan un daño enorme: falsas expectativas y menor credibilidad. Avi Loeb solo daña al público y la comunidad astronómica

www.instagram.com/reel/DMdr1A5...

24.07.2025 12:43 👍 0 🔁 0 💬 0 📌 0
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Um...

12.07.2025 19:01 👍 1 🔁 0 💬 0 📌 0
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Journey with us to the star that exploded twice! 🚀

The remains of supernova SNR 0509-67.5 are all that is left of this star. Our VLT found out that it suffered a pair of explosive blasts, shedding new light on some of the most important explosions in the Universe.

www.eso.org/public/news/...

🔭 🧪

07.07.2025 08:06 👍 128 🔁 23 💬 5 📌 3
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Por ejemplo, esta imagen de la zona central del cúmulo de Virgo muestra galaxias gigantes intercambiando materia. Detalles como éstos nos ayudarán a descifrar la evolución de las galaxias, incluyendo el rol (y posiblemente la naturaleza) de la materia oscura.

23.06.2025 14:20 👍 0 🔁 0 💬 0 📌 0

¡Pensar que tendremos una imagen como éstas, cubriendo todo el cielo visible desde el norte de Chile, cada tres días, durante los próximos 10 años! Será realmente una revolución en astronomía y traerá descubrimientos que aún no imaginamos.

23.06.2025 14:20 👍 0 🔁 0 💬 1 📌 0
El Observatorio Vera C. Rubin y su cámara digital, la más grande del mundo, revelan desde Chile sus primeras imágenes del Universo – Planetario Chile

Las primeras imágenes tomadas con la cámara más grande del mundo, LSSTCam, por el Observatorio Vera C. Rubin @vrubinobs.bsky.social, ya están disponibles y son una maravilla!

planetariochile.cl/el-observato...

23.06.2025 14:20 👍 0 🔁 0 💬 1 📌 0

#GoPacers

20.06.2025 02:02 👍 1 🔁 0 💬 0 📌 0