Sergio Pereira
sergiopereiralema.bsky.social
Sergio Pereira
@sergiopereiralema.bsky.social
Ciencia, astronomía e análisis de datos. Aprendendo a procesar os datos de Gaia (ESA).
Science, astronomy and data analysis. Learning to process data from Gaia (ESA).

https://exploregaiadata.com/
Pinned
Hello, everyone! I have something I'm really excited to share. After tinkering around for a while, I've launched exploregaiadata.com. It's a personal project to learn how to play around with data from ESA's Gaia space mission and perform some relevant analyses

#AstroMethods
Welcome
Are you fascinated by the universe and wonder how its secrets are unravelled? In this blog, I will recount my learning process, where I combine my ...
exploregaiadata.com
Reposted by Sergio Pereira
In most cases, we don't have the technology to directly see newborn planets orbiting baby stars. But the Gaia space telescope is so sensitive that it can measure the stars being yanked back & forth by the gravity of the hidden objects around them.

Full paper at link. 🧪🔭

arxiv.org/abs/2512.00157
December 18, 2025 at 7:58 PM
Reposted by Sergio Pereira
Wow! Not only can we see the disks where planets are being born around young stars, now we can sense the pull of the worlds taking shape within.

Blue ovals show orbits of 31 newfound stellar companions. Bottom right: a simulation of our solar system at the same age. 🔭🧪

www.esa.int/ESA_Multimed...
December 18, 2025 at 7:47 PM
As predicións xa apuntan a un anomalía na temperatura de +1.7° no 2027, empuxado polo fenómeno de "El Niño".

E mentres tanto a ultradereita negacionista medrando en medio planeta.

Agora explicádeme con debuxos como fago para confiar na humanidade
NEW from Hansen et al

"At least a moderate El Nino beginning in 2026 leads us to the projection in Fig. 5, with global temperature reaching a minimum at or above +1.4°C within several months and then rising to a record global temperature of about +1.7°C in 2027."

Source: www.columbia.edu/~je...
December 18, 2025 at 9:12 PM
Reposted by Sergio Pereira
🔭 El Banco Europeo de Inversiones (BEI) asesorará el desarrollo del Telescopio de Treinta Metros #TMT en La Palma.

La iniciativa contará con asesoría económica y financiera para una de las grandes infraestructuras científicas del futuro.

🔗 www.iac.es/es/divulgaci...
December 17, 2025 at 5:23 PM
Aínda estades a tempo. As dúas actividades sobre CESAR e sobre observatorio virtual son imprescindibles
Docentes queridísimos/as que andades por aquí. Ben sei que tocan unhas merecidas vacacións. Pero temos unha AstroGalicia tamén para vós.
Perfil docente?
- charla sobre o programa educativo da @esa.int denominado CESAR
- uso de telescopios virtuais. Para a aula é un planazo.
De BALDE!!

Para inscritos, obradoiro de observación do Sol e a Escola de Astronomía.

Unha AstroGalicia para cada interese!!

ceosgalegos.com/astrogalicia...
December 17, 2025 at 6:21 PM
O desmantelamento das estruturas científicas nos Estados Unidos continúa. É indignante. E hai quen lle segue a corrente, e está moi preto de tocar o goberno estatal en España. Cómo era o das barbas e o veciño?
Exclusive: The Trump administration is moving to dismantle the National Center for Atmospheric Research in Colorado, according to a senior White House official, taking aim at one of the world's leading climate research labs.
Trump moves to dismantle major US climate research center in Colorado
The Trump administration is breaking up the National Center for Atmospheric Research, taking aim at one of the world's leading climate research labs.
bit.ly
December 17, 2025 at 8:28 AM
Reposted by Sergio Pereira
Perfil docente?
- charla sobre o programa educativo da @esa.int denominado CESAR
- uso de telescopios virtuais. Para a aula é un planazo.
De BALDE!!

Para inscritos, obradoiro de observación do Sol e a Escola de Astronomía.

Unha AstroGalicia para cada interese!!

ceosgalegos.com/astrogalicia...
AstroGalicia25: o programa
Sábado 20 de decembro de 2025 O programa é definitivo, se ben pode haber lixeiras modificacións polas circunstancias (voos, meteoroloxía...). 9:00 Che
ceosgalegos.com
December 16, 2025 at 10:37 PM
Reposted by Sergio Pereira
O cumio dun traballo de moitos meses, moitas persoas e moitas entidades.

O PROGRAMA completo da AstroGalicia25, a festa galega das estrelas.

😊

ceosgalegos.com/astrogalicia...
AstroGalicia25: o programa
Sábado 20 de decembro de 2025 O programa é definitivo, se ben pode haber lixeiras modificacións polas circunstancias (voos, meteoroloxía...). 9:00 Che
ceosgalegos.com
December 15, 2025 at 12:17 PM
Como yo prefiero el orden, podemos hacerlo mejor: os invito y me ayudáis a recoger mi casa
Vienen visitas y recoges tu casa que está hecha una mierda porque tu referencia de orden son las casas que visitas tú, que recogen la casa antes de que vayas porque ven tu casa recogida cuando te visitan.

Entre todos podemos parar esto. No recojas.
December 13, 2025 at 3:13 PM
Pero aínda seguimos así? 😖😖😖
December 12, 2025 at 6:18 PM
Reposted by Sergio Pereira
Uno de los mejores divulgadores sobre astronomía. No es extraño que haya largas colas para escuchar a @borjatosar.bsky.social. 👏👏
Borja Tosar, astrofísico y divulgador: «Nadie es indiferente a las estrellas»
Los últimos sábados de cada mes se forman colas para escucharlo en la Casa de las Ciencias de A Coruña, donde expande su pasión por las estrellas desde hace 20 años
www.lavozdegalicia.es
December 11, 2025 at 9:22 AM
Reposted by Sergio Pereira
December 10, 2025 at 10:04 PM
No New York Times: "La maravilla de ver las estrellas en la oscuridad"
www.nytimes.com/es/2025/12/0...
La maravilla de ver las estrellas en la oscuridad
www.nytimes.com
December 8, 2025 at 9:31 AM
Reposted by Sergio Pereira
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.
Mark Zuckerberg’s gamble on the ‘Metaverse’ has cost Meta more than $77B

The company now plans to cut spending on it and shift focus to AI wearables instead

(via WSJ)
December 7, 2025 at 2:03 AM
Reposted by Sergio Pereira
Bombed Chornobyl shelter no longer blocks radiation and needs major repair – IAEA
www.theguardian.com/world/2025/d...
Bombed Chornobyl shelter no longer blocks radiation and needs major repair – IAEA
Drone attack that Ukraine blamed on Russia blew hole in painstakingly erected €1.5bn shield meant to allow for final clean-up of 1986 meltdown site
www.theguardian.com
December 6, 2025 at 9:20 AM
O CEO de Palantir di que convertir os crímenes de guerra (cunha os barcos afundidos no Caribe) en constitucionais sería bo para o seu negocio. Pois xa chegamos a water punto. Os noxentos fachendosos de ser noxentos e ruins e nós mirando como imos cara o desastre sen remedio.
December 4, 2025 at 11:38 PM
Reposted by Sergio Pereira
It’s a symptom of our current debased condition that guys like this feel comfortable making these kind of vile statements in public.
December 4, 2025 at 12:18 PM
Reposted by Sergio Pereira
Every single thing that comes out about him is testament to the grifting he is involved in.

The guy that led the "make Govt. efficient machine" that has now harmed and killed many.

Meanwhile, his good mate is about to become the next NASA Administrator next week. So ... more grifting!
“Elon Musk’s charitable foundation grew larger than ever in 2024. But, for the fourth year in a row, the huge charity failed to give away the minimum amount required by law — and the donations it did make went largely to charities closely tied to Mr. Musk himself.”

www.nytimes.com/2025/12/02/u...
Elon Musk’s Foundation Grows to $14 Billion, but Gives Little to Outsiders
www.nytimes.com
December 4, 2025 at 12:45 AM
Reposted by Sergio Pereira
By 2040, ~40% of the images from Hubble Space Telescope, and more than 96% from new and future space telescopes like SPHEREx, ARRAKIHS, and Xuntian will be contaminated by internet satellite constellations.

Read our new NASA article in Nature:
nature.com/articles/s4158…
December 3, 2025 at 6:55 PM
Reposted by Sergio Pereira
De gases e pós... @ceosgalegos.bsky.social
December 3, 2025 at 9:51 PM
Reposted by Sergio Pereira
"Sería muy triste comprobar dentro de unos años que, como en el 'Ensayo sobre la ceguera' de Saramago, sabíamos que nos quedaríamos ciegos y no hicimos nada al respecto".

Eva Villaver — Subdirectora del Instituto Astrofísico de Canarias (IAC)
December 3, 2025 at 5:34 PM
Reposted by Sergio Pereira
#COMET #3IATLAS MONITORED TONIGHT from #MontsenyObservatory. The antitail keeps being the most relevant feature, but nuclear activity exhibits many active, bended jets.
Just a #comet, our research paper
➡️ arxiv.org/abs/2511.191...
Outreach article:👇
theconversation.com/desvelada-la...
#PlanetSci
December 1, 2025 at 2:23 PM
Reposted by Sergio Pereira
Sin duda la protección radiológica ☢️ debe formar parte de los temarios de alumnos de secundaria y bachillerato.
Aquí una guía publicada por el Consejo de Seguridad Nuclear en colaboración con la Sociedad Española de Protección Radiológica.
👍
www.csn.es/documents/10...
www.csn.es
December 1, 2025 at 9:34 PM
Uuuffff! @astrogalicia.bsky.social ponse moi interesante!!!
Hoxe pechamos a presenza dun dos responsable (en España) da sonda Euclid 😎

Iniciamos as conversas en xuño, así que non foi sen tempo.

Teremos unha charliña didáctica para todos os públicos e un seminario, para inscrito, sobre os datos que toma, a súa utilidade...

Promete.
December 1, 2025 at 9:50 PM
Reposted by Sergio Pereira
Calendario de adviento de curiosidades espaciales ✨🎄
Por cada día que lo compartáis tenéis un descuento del 1% en la web si sois seguidores.

Día 1
La sonda New Horizons de la NASA lleva el procesador MIPS R3000, el mismo que tiene la PlayStation 1.
Se lanzó en 2006 y sobrevoló Plutón y Arrokoth 🛰️
December 1, 2025 at 2:04 PM