Lightnews — Scholar-powered news

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El Espectro 👻 🎃 @telescoper.bsky.social · 17d

Euclid Flagship 2 Update

The largest ever synthetic galaxy catalogue is now public; a team of 8 institutions within the Euclid Consortium, led by the Institute of Space Sciences (ICE-CSIC) and the Port d’Informació Científica (PIC)in Barcelona have developed this `mock' catalogue, which includes…

Euclid Flagship 2 Update

The largest ever synthetic galaxy catalogue is now public; a team of 8 institutions within the Euclid Consortium, led by the Institute of Space Sciences (ICE-CSIC) and the Port d’Informació Científica (PIC)in Barcelona have developed this `mock' catalogue, which includes 3.4 billion galaxies with 400 modelled properties available for the scientific community.

telescoper.blog

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Emily Hunt @emily.space · Sep 10

I think that this is a *huge* result for galactic dynamics & stellar streams - the fact that our galaxy's disk is probably full of *thousands* of these streams is amazing! Far more are detectable than previously thought - thanks to Sebastian's algorithm, SigMA.

🔭☄️🧪 #galactic

Toward the fabric of the Milky Way I. The density of disk streams from a local $250^3$ pc$^3$ volume

We studied 12 disk streams found in a 250$^3$ pc$^3$ volume in the solar neighborhood, which we define as coeval and comoving stellar structures with aspect ratios greater than 3:1. Using \emph{Gaia} ...

arxiv.org

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Emily Hunt @emily.space · 24d

🔭☄️ #galactic

A *huge* new review of Gaia data came out today!

Luke Dones @lukemeister.bsky.social · 24d

Gargantuan Gaia review by Michael Perryman

"271 pages, 126 figures, accepted for publication in Physics Reports"

arxiv.org/abs/2509.10883

Figure 16: Sky projections, in Galactic coordinates, showing various properties of the Gaia DR3 data release (see text for details).

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James Davenport @jradavenport.com · 23d

On the 🔭🧪 postdoc job market? Excited about science with Rubin and big surveys? Come join us at DiRAC. I’m so excited that we’re able to offer a few of these Fellowship positions this year!

Please share, LMK if you have Q’s!

aas.org/jobregister/...

Postdoctoral Scholar - Institute for Data Intensive Research in Astrophysics & Cosmology | American Astronomical Society

We invite applications for the 2026 DiRAC Fellowship in the Department of Astronomy at the University of Washington. These up to 3-year full time postdoctoral positions are available to promising earl...

aas.org

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Institute of Cosmos Sciences of the University of Barcelona @icc-ub.bsky.social · 22d

☄️Hayabusa2 mission just got more exciting!

💫New observations led by @ua.es #ICCUB’s Toni Santana-Ros reveal asteroid 1998 KY26 is just 11m wide and spins every 5 min!

This poses a challenge for the mission, which will attempt a brief ‘kiss’ manoeuvre in 2031 to collect data

Can spacecraft Hayabusa2 touchdown? New study reveals space mission’s target asteroid is tinier and faster than thought. | ICCUB

New observations reveal asteroid 1998 KY26 is just 11 metres wide and spins every 5 minutes, posing new challenges for Japan’s Hayabusa2 mission in 2031, when the spacecraft will attempt a delicate ‘kiss’ manoeuvre, briefly touching the asteroid’s surface to collect data without landing.

bit.ly

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GaiaUB @gaiaub.bsky.social · Jul 24

Eduard Masana and Hector Linares from our group have produced the first global map of Light Pollution in Catalunya @ieec.cat @icc-ub.bsky.social govern.cat/salapremsa/n...

Primer mapa global de la contaminació lumínica a Catalunya desenvolupat mitjançant modelització avançada

govern.cat

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Institut d'Estudis Espacials de Catalunya (IEEC) @ieec.cat · Jul 31

Do you remember the global #map of light #pollution in Catalonia developed using advanced #modelling? 🌃

Today we introduce the #IEEC – @icc-ub.bsky.social group on Light pollution, who make projects like this possible.

Check it out!

👉 www.ieec.cat/en/project/7...

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Institute of Cosmos Sciences of the University of Barcelona @icc-ub.bsky.social · Aug 11

🔵On 12 August 2026, Catalonia will see its first total solar eclipse in over 100 years!

🕶️✨Use 12 August 2025 to check your sunset view and get eclipse-ready

💪The #ICCUB is proud to be part of the scientific outreach efforts, alongside @ieec.cat and other leading institutions

The countdown begins for the total solar eclipse of 2026 in Catalonia | ICCUB

On 12 August 2026, Catalonia will experience a total solar eclipse, a phenomenon not seen in the country since 1905! This coming 12 August is a perfect time to check whether the future eclipse will be visible from your location: if there are no obstacles blocking your view of the sunset, it is a goo...

bit.ly

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Emily Hunt @emily.space · Sep 6

bluesky hive mind: is this unhinged conference poster design actually any good?

I really want to make something eye-catching that's not just the normal black-text-on-white-background, so I turned the entire background into the main figure

still needs layout, text, & figure work, but basic concept:

A science poster titled "We will never find most open clusters". The background of the poster is an artist's impression of the Milky Way.

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Ketan Joshi @ketanjoshi.co · Aug 22

HEY friends: recently seen heaps of "disclosures" from AI companies of the energy cost per question you type into chatbots (most recently from Google)?

Presenting per-query 'efficiency' is part of big tech's efforts to hide its extremely real and happening-right-now climate impacts!

NEW POST -->>>

Big tech’s selective disclosure masks AI’s real climate impact

Google claims to have disclosed new information proving its own efficiency. But it has hidden the bigger picture. Guess what: I’ve got the bigger picture for you right here in this big old po…

ketanjoshi.co

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Astronomy Picture of the Day 🪐 @apod.shinyakato.dev · Aug 25

🔭 The Meteor and the Star Cluster

Image Credit & Copyright: Yousif Alqasimi & Essa Al Jasmi

apod.nasa.gov/apod/ap25082...

A starfield surrounds the bright blue stars of a star cluster: the Pleiades star cluster. Nearly horizontally across the cluster is a bright green streak, most likely a meteor. Please see the explanation for more detailed information.

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James Webb Space Telescope Discoveries Tracker @jameswebbdiscovery.com · Aug 25

Neutron stars mergers ripple spacetime - Start exploring universe with Award Winning Telescopes--> https://www.jameswebbdiscovery.com/top-10-telescopes-telescopeadvisor-awards-2025 or beginners choice--> https://amzn.to/45dxlOF #Astronomy #AmazonAffiliate #NASA #Space

100 Fascinating Facts about Neutron Stars

www.jameswebbdiscovery.com

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James Webb Space Telescope Discoveries Tracker @jameswebbdiscovery.com · Aug 21

Uncover 100 facts on gravitational waves’ cosmic clues - Start exploring universe with Award Winning Telescopes--> https://www.jameswebbdiscovery.com/top-10-telescopes-telescopeadvisor-awards-2025 or beginners choice--> https://amzn.to/45dxlOF #Astronomy #AmazonAffiliate #NASA #Space

100 Fascinating Facts about Gravitational Waves

www.jameswebbdiscovery.com

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Institute of Cosmos Sciences of the University of Barcelona @icc-ub.bsky.social · Jul 24

🔵 ICCNews | 🌐Researchers have developed the first Global map of light pollution in Catalonia!🔦

🌘This new model, designed by lass="text-blue-600 dark:text-sky-400">#[email protected] researcher Eduard Masana, will help assess the impact of specific policies to the quality of the night sky✨

First global map of light pollution in Catalonia developed using advanced modeling | ICCUB

The predictive model, developed by ICCUB-IEEC researcher Eduard Masana and based on supercomputing, enables the assessment of night sky brightness across the territory and opens the door to improved planning and environmental and energy management of outdoor lighting.

bit.ly

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Institut d'Estudis Espacials de Catalunya (IEEC) @ieec.cat · Jul 24

First global #map of light #pollution in Catalonia using advanced modelling! 🌃

The #IEEC has developed the tool in collaboration with the Department of Territory, Housing and Ecological Transition of the Government of Catalonia, with support from @icc-ub.bsky.social

👉 www.ieec.cat/en/first-glo...

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Institut d'Estudis Espacials de Catalunya (IEEC) @ieec.cat · Jul 24

Primer #mapa global de la #contaminació lumínica a Catalunya amb modelització avançada! 🌃

L' #IEEC ha preparat aquesta eina amb el Departament de Territori, Habitatge i Transició Ecològica de la Generalitat de Catalunya, i amb el suport de l' @icc-ub.bsky.social

👉 www.ieec.cat/primer-mapa-...

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GaiaUB @gaiaub.bsky.social · Jul 24

Eduard Masana and Hector Linares from our group have produced the first global map of Light Pollution in Catalunya @ieec.cat @icc-ub.bsky.social govern.cat/salapremsa/n...

Primer mapa global de la contaminació lumínica a Catalunya desenvolupat mitjançant modelització avançada

govern.cat

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James Webb Space Telescope Discoveries Tracker @jameswebbdiscovery.com · Jul 22

WLM dwarf irregular in Webb focus - UNLOCK Secrets of the Universe from your backyard! --> https://amzn.to/4jmO4or Rubin Observatory Unveils First Images--> https://bit.ly/469UbZp #Astronomy #AmazonAffiliate #NASA #Space

Webb image shows Wolf–Lundmark–Melotte a dwarf galaxy full of stars

www.jameswebbdiscovery.com

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ICCUBDivulga @iccubdivulga.bsky.social · Jul 4

✨La Real Acadèmia de Ciències i Arts de Barcelona ha inaugurat l’ #EspaiCatalà a l'Observatori Fabra, una exposició dedicada a l’astrònoma pionera Assumpció Català amb la col·laboració de @ub.edu i #FECYT

🔭Forma part de l’ #AnyAssumpcióCatalà, impulsat per #InstitutCatalàDones♀️

🔗 bit.ly/45VCSeQ

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ICCUBDivulga @iccubdivulga.bsky.social · Jul 4

🚨 Un equip internacional d'astrònoms ha descobert el tercer objecte interestel·lar!

🔭 3I/ATLAS, detectat amb la participació de Toni Santana-Ros ( #ICCUB-#UA), és gran, actiu i serà visible durant mesos!

🌌 Una oportunitat única per estudiar un missatger d’un altre sistema estel·lar

bit.ly/400vGua

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ICCUBDivulga @iccubdivulga.bsky.social · Jul 14

💫Cesca Figueras i Trinitat Cadefau ens presenten l’exposició sobre Assumpció Català amb el seu llegat #científic

🖼️Estarà disponible al #ParcAstronòmicMontsec i per itinerar a escoles, centres cívic i biblioteques

+info i reserves👉🏼 dones.gencat.cat/ca/ambits/ac...

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ICCUBDivulga @iccubdivulga.bsky.social · Jul 14

🔭Comença l’Acte Central de la Commemoració del Centenari d’ #AssumpcióCatalà, astrònoma catalana pionera!

✨ #TalDiaComAvui naixia la Dra. Català al 1925 a Barcelon, i avui ens trobem per celebrar el seu llegat

🤝🏼Organitzen #InstitutCatalàDones, #ParcAstronòmicMontsec, #FGC i @ub.edu - #ICCUB

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ESA Operations @operations.esa.int · Jul 3

ESA's astronomers are actively tracking 3I/ATLAS, which is now the third confirmed interstellar comet to pass through our Solar System!

More info at: www.esa.int/Space_Safety...

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Emily Hunt @emily.space · Jul 9

Postdoc in #stellarastro at the ICCUB in Barcelona ☄️

Everyone I know from the astro community in Barcelona is lovely, so I can highly recommend it!

Institute of Cosmos Sciences of the University of Barcelona @icc-ub.bsky.social · Jul 1

🚨 #MSCA Postdoc Fellowship in Stellar Physics at #ICCUB!

✨Join cutting-edge research on star formation, evolution & exoplanet habitability

🗓️ Deadline: Aug 20, 2025
📩 Apply: [email protected]

🔗https://icc.ub.edu/node/1151639
#Astrophysics #MSCA #PostdocJobs #StellarPhysics #WomenInScience #Barcelona

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Sloan Digital Sky Surveys @sdssurveys.bsky.social · Jul 11

DR19 is the first big data release for SDSS-V, and the first time @milkywaymapper.bsky.social is featured: this mapper loves stars because stars are cool (or hot), but also because they can tell us how the Milky Way formed www.sdss.org/dr19/mwm/abo... #DR19

This image has in the background an artist impression of the Milky Way, face on, featuring its spiral arms. On top with contours we have the number density of target stars for Milky Way Mapper's Galactic Genesis program. The target density is higher closer to the Sun's location, and towards the Galactic Bulge. Image taken from https://www.sdss.org/dr19/mwm/programs/gg/, with image credit to Jon Bird for the target density contours, and Robert Hurt/NASA for the Milky Way image.

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