Reymond Aguinaldo

An aerial view of an astronomical observatory situated in a rocky, arid landscape. The image shows several telescope domes and smaller structures scattered across the site, connected by paved roads.

#TourESO 📹🔴 Grab a cozy seat, we’re going live in 5 minutes with our virtual tour of the La Silla Observatory! Don’t miss out! 

Streamed here: https://www.youtube.com/user/ESOobservatory/  

📷 ESO/A. Tsaousis
🔭

Secret route to warm cosmic ‘inflation’: the nuclear force Modelling shows how the infant Universe might have stayed warm and dense during its primoridal expansion.

Modelling shows how the infant Universe might have stayed warm and dense during its primoridal expansion

go.nature.com/47AzOE7

Moons

Learn more about the fascinating moons of our solar system—and the secrets they hold: science.nasa.gov/solar-system...

#FunFact: There are 891 confirmed moons in our solar system (so far). As telescopes become more powerful and space missions venture deeper, we’ll likely find more hidden worlds—small, icy, and mysterious—circling the distant giants. The story of our solar system’s moons is still unfolding.

An image of the galaxy cluster MACS J1423, showing thousands of galaxies and gravitational lensing effects. Credit: NASA, ESA, CSA, STScI, C. Willott (NRC-Canada), L. Mowla (Wellesley College), K. Iyer (Columbia)

ESA/Webb (@esa.int) images (Dec 11, 2024)

Discover the galaxy cluster MACS J1423, where thousands of galaxies are intertwined, revealing stunning gravitational lensing effects.

esawebb.org/images/weic2429c/

Carl Sagan sitting on a wooden bench.

After the earth dies, some 5 billion years from now, after it's burned to a crisp, or even swallowed by the Sun, there will be other worlds and stars and galaxies coming into being -- and they will know nothing of a place once called Earth.

― Carl Sagan

Has November 1st always come right after October 31st? Seems kind of abrupt.

For Halloween, a Hubble image of the star-forming region and nebula NGC 2080, also known as the Ghost Head Nebula.

This ESO image resembling a giant bat, shows a large cloud of cosmic gas and dust. The most prominent clouds here are RCW 94, which represents the right wing of the bat, and RCW 95, which forms the body, while the other parts of the bat have no official designation.

Smashing particles at the energy frontier At CERN's Large Hadron Collider, physicists create the world's highest energy human-made collisions to explore the fundamental building blocks of the universe. Join Yale Professor Sarah Demers as she ...

At CERN's Large Hadron Collider, physicists explore the fundamental building blocks of the universe. | https://bit.ly/4ofnlw6

Join Yale Professor Sarah Demers as she describes how CERN researchers create, and learn from, these collisions at the energy frontier.

#philsci ⚛️ 🧪

A deep look at the Milky Way Core | 135mm HaRGB Mosaic

AstroBin's Image of the Day: "A deep look at the Milky Way Core | 135mm HaRGB Mosaic" by Jakob Sahner
www.astrobin.com/kgjlxo/
#astrophotography

Apply to Write for Astrobites 2025! Love astronomy, astrophysics, and science communication? Come join the Astrobites team! Applications due November 26th.

Are you a grad student interested in writing for Astrobites, or do you know one? We're recruiting! Apply by November 26 :)

astrobites.org/2025/10/31/a...

All Eyes on Interstellar Comet 3I/ATLAS Interstellar comet 3I/ATLAS will soon exit the Sun's glare to enter the morning sky. Get ready for the observing opportunity of a lifetime.

Live in the Northern Hemisphere and want to see a comet older then the Solar System? Nice overview of upcoming pre-dawn visibility for interstellar comet 3I/ATLAS with small amateur telescopes 🔭🧪

What makes even your strangest dreams feel familiar, explained by a neuroscientist - BBC Science Focus Magazine Our sleeping brains weave a patchwork out of our memories in complex, baffling ways.

What makes even your strangest dreams feel familiar, explained by a neuroscientist

www.sciencefocus.com...

Because it's weird, right? You're dreaming of being upside down in a flaming boat made of fingernails, talking to a bat who's also your mother, and be all like "Yup, this is fine"

Here's why

The Peace Particle 🔵

Join us on 13 November at #CERNScienceGateway for the screening of The Peace Particle, a documentary exploring the history and future of #CERN.

This documentary blends poetry, music, and rare archival footage.
Register here: indico.cern.ch/event/1586858/

Quantum-inspired algorithm could help reveal hidden cosmic objects Combining a quantum-inspired algorithm and quantum information processing technologies could enable researchers to measure masses of cosmic objects that bend light almost imperceptibly

Combining a quantum-inspired algorithm and quantum information processing technologies could enable researchers to measure masses of cosmic objects that bend light almost imperceptibly

Egypt's Grand Museum opens, displaying Tutankhamun tomb in full for first time The launch of the billion-dollar site sees fresh calls for the return of antiquities held in museums overseas.

Egypt's Grand Museum opens, displaying Tutankhamun tomb in full for first time. 🧪 www.bbc.co.uk/news/article...

#NASA's #Mars #Perseverance rover

Sol 1670 Oct. 31, 2025: Left Navigation Camera (Navcam)

mars.nasa.gov/mars2020/mul...

NASA/JPL-Caltech/j. Roger

Image: three figures in protective suits watch from behind a screen as a child approaches a door-like mechanical structure in which stands a man. Between them is an amorphous glowing shape. Caption: Scientists at the institute of halloween studies have succeeded in creating "The treak": a quantum state that is simultaneously trick and treat. It is stable for a millionth of a second before decaying into a half-hearted prank and a mediocre candy bar.

A halloween cartoon for @newscientist.com

Black labels indicate absolute biomass estimates, gray labels indicate the fraction of the total estimated biomass of mammals (see Fig. S9 for the estimated fraction of global biomass). Top: the total biomass of humans and domesticated mammals (cattle, buffalo, swine and others). Bottom: the total biomass of wild marine mammals, along with a coarse, preliminary estimate of the total biomass of wild land mammals, based on previously published temporal abundance estimates.

Fascinating graph shows the estimated total mass of all the mammals living on Earth.

In 1850, it was evenly divided between wildlife and humans + domesticated animals. Today, humans and their livestock account for about 95% of the total. 🧪

www.nature.com/articles/s41...

A gorgeous gibbous Moon rests above a ridge line near Cerro Pachón, the home of four NOIRLab-operated telescopes including NSF–DOE Vera C. Rubin Observatory, jointly funded by the U.S. National Science Foundation (NSF) and the U.S. Department of Energy Office of Science (DOE/SC); Gemini South, one half of the International Gemini Observatory, supported in part by NSF; and the SOAR Telescope of Cerro Tololo Inter-American Observatory, a Program of NSF NOIRLab. The particular beauty of the Moon and its features are visible in this delightful image. The dark splotches of ancient, basaltic flats known as maria splatter across our satellite. These features formed when basalt moved from the lunar interior to fill basins on the surface during a time of active volcanism on the Moon. On the left side of the Moon, as seen from this perspective, are the two famous maria: Mare Tranquillitatis (immediately above center left) and Mare Serenitatis (center left). These maria, respectively, were the landing sites for the first and last human visits to the Moon. On the upper left-hand edge of the Moon, the slopes and edges of the Moon’s other distinct feature, craters, appear starkly against the dark blue sky. One of the most distinct lunar craters, the massive Tycho crater, is in the upper right quadrant of the Moon in this image, flipped almost 180 degrees compared to the view from the northern hemisphere. Craters on the Moon are younger than the maria, and Tycho crater is particularly young, as evident by its sharp appearance.

NOIRLab image of the week

A Lunar Delight Deep in the Desert

Credit: NOIRLab/NSF/AURA/P. Horálek (Institute of Physics in Opava)

noirlab.edu/public/image... 🧪🔭

👻

YouTube video by European Space Agency, ESA Seas of the Sun: The story of Cluster (Full documentary)

Join us from 19:00 CET for the live premiere of 'Seas of the Sun: The story of Cluster' 🍿

#ESACluster scientists & engineers, as well as the filmmakers will be waiting for your questions in the live chat.

Watch here👉 www.youtube.com/watch?v=Go_r...

Heads up @esww2025.bsky.social #ESWW2025

🔭 🧪 ☀️

After the ISR shut down in 1984, CERN’s focus shifted to the Large Electron-Positron Collider (LEP), but the tunnel is still used today for storage and magnet works.

Read more: home.cern/science/acce...

#ThrowbackThursday to 1970 when scientists were measuring the magnets for the Intersecting Storage Rings (ISR) – the world’s first hadron collider. The ISR started operations on 27 January 1971, when two beams of protons collided for the very first time.

This Is The Largest Radio Color Image Of The Milky Way Ever Assembled – And It's Gorgeous It is the best radio map of our galaxy ever made.

This Is The Largest Radio Color Image Of The Milky Way Ever Assembled – And It's Gorgeous

www.iflscience.com/this-is-the-...

Tron Ares joke here

30 years ago today, while trapped in a 3D world, Homer Simpson asked if anyone had seen the movie Tron. “Treehouse of Horror VI” premiered October 29, 1995.