Dark Matter Day

On and around October 31 the world will celebrate the hunt for dark matter. Please visit @particlenews for more info.

[Dark Matter Day @DarkMatterDay]

The search for dark matter is a global pursuit to broaden our understanding of the universe. Explore this map to see where active and upcoming searches for dark matter are happening; you might even be surprised to find one near you!

https://t.co/36l0WJJL1W

#DarkMatterDay

[Dark Matter Day @DarkMatterDay]

Join the adventure! Storyteller David Telese and @CERN physicist Baptiste Ravina present a magical show for kids that unveils the mysteries of dark matter 🌌✨ #DarkMatterDay

🗓 November 8, 2025
⏰ 2:30PM
📍 Physical Event

Learn more: https://t.co/4T2rHOtw8u

[Dark Matter Day @DarkMatterDay]

This #DarkMatterDay, join Dr. Sebastian Trojanowski for a science talk on the search for dark matter — from astrophysics to particle cosmology. 🌌✨

🗓 November 4, 2025
⏰ 6:00PM
📍 Physical Event

Learn more: https://t.co/Ihw5aJxrfq

[ATLAS Experiment @ATLASexperiment]

What happens when you mix Halloween with #darkmatterday? Physics pumpkins, of course! 🎃 🎃

Grab spooky science stencils from the ATLAS Experiment at @CERN, including a special Dark Matter design!

🔗 https://t.co/mmCViG5gEo

[ESA's Euclid mission @ESA_Euclid]

Who else is celebrating #DarkMatterDay?

Euclid, our #DarkUniverse 🕵️ detective certainly is, though not taking the day off.

With 1% of the its survey recently marked, there is plenty more to observe to unlock the secrets of dark matter and dark energy.

[Brookhaven Lab @BrookhavenLab]

Happy Halloween and #DarkMatterDay! 🎃👻

On Oct. 31, we celebrate the hunt for the universe's missing matter. 🔎

Ordinary matter, like stars and planets, makes up just 4.9% of the universe's mass and energy. The rest is a spooky physics mystery: https://t.co/LneBjkz5cY

[National Academy of Sciences @theNASciences]

What if the first stars were powered not by fusion, but by dark matter? 🌌 On #DarkMatterDay, explore a new @PNASNews study from #NASmember Katherine Freese, whose team used @NASAWebb to identify possible supermassive dark stars. Read more: https://t.co/VqrBfz8GrY

[SciComm Excellence @SciCommAwards]

Halloween is also #DarkMatterDay! 🎃🌌

Celebrate the invisible forces that shape our universe with @savagitsky, @ClaireLamman, and @sanjanacurtis as they reflect on how studying the origins, elements, and mysteries of the cosmos connects us all.💫

#scicomm #astronomy #cosmology

[NSF-DOE Rubin Observatory @VRubinObs]

Today isn't just #Halloween🎃, it's also #DarkMatterDay!

Dark matter interacts via gravity, so while we can’t see it directly, we know it’s there.

NSF–DOE Rubin Observatory's 10-year survey will measure distortions in billions of galaxies, revealing where dark matter is hiding.

[LZ Dark Matter @lzdarkmatter]

Happy #DarkMatterDay! Every year around the 31st October, we celebrate the historic hunt for the unseen... 🔍🌌

See if there's an event near you: https://t.co/JntpJhpW7e

[SNOLAB @SNOLABscience]

🌌Dark matter is a huge cosmic mystery, and much of the research underway at SNOLAB is focused on it.

This #DarkMatterDay read about the international efforts that are in progress at Canada’s deep underground science lab. https://t.co/y1OuK45qC9 @DarkMatterDay

[Gary McFarlane @GaryM]

WHAT IS DARK MATTER DAY? There’s more to the universe than stars, planets, asteroids, comets & space dust. In fact, there’s a lot more to the universe that we can’t yet explain. https://t.co/sbLLuL7cbl #STEM #DarkMatterDay #SciChat #Halloween 🎃

[KEK 高エネルギー加速器研究機構 @kek_jp]

／
ハロウィンだけじゃない🎃
10/31は #ダークマターデー #DarkMatterDay
＼

ダークマターにダークエネルギー...🌚
宇宙はダークなもので満ちている⁉️
Quantum Kate 第10話「ダークな物ばかり」
https://t.co/WgDVZoizVQ

KEKは、デンマークにある素粒子物理学の研究機関 CP3-Origins が制作した動画「Quantum Kate」の日本語吹き替え版を制作しました。2分程度でさくさく観られるので、ぜひご覧ください✨

[King's College London @KingsCollegeLon]

Did you know most of our universe is made up of something unknown?

While researchers have inferred the existence of dark matter, no one knows what it actually is.

Here to explain more this #DarkMatterDay is Dr Shyam Balaji, @KingsNMES.

https://t.co/ragSX5dObN
#ScienceAtKings

[Dark Matter Day @DarkMatterDay]

Happy #DarkMatterDay!

[CNRS Nucléaire & Particules @CNRS_IN2P3]

🌌 31 octobre, on célèbre le #DarkMatterDay !

Une journée pour plonger dans les mystères de la matière noire, cette matière invisible qui compose près de 27 % de l’Univers.

🔗 En savoir plus : https://t.co/FQ6ioo3PLf

@DarkMatterDay @particlenews @symmetrymagazine

[Dark Matter Day @DarkMatterDay]

Explore the mysteries of dark matter at the Faculty of Science! Kids & adults can enjoy hands-on experiments and a telescope observation of the night sky. 🌌 #DarkMatterDay

🗓 Oct 31, 2025
⏰ 5:30 PM
📍 In person

More info 👉 https://t.co/fZ010F0Kj3

[Dark Matter Day @DarkMatterDay]

The Planetarium of Castelló is once again bringing the mystery of the Universe to life with special events celebrating Dark Matter Day in Castelló de la Plana! @PlanetariCs #DarkMatterDay

🗓 October 31, 2025
⏰ 5:00PM
📍 Physical Event

Learn more: https://t.co/IFHaMjYZr0

[Encyclopedia MDPI @Encyclopedia_X]

The Invisible Force Shaping Our Universe 🌌

Dark matter makes up 27% of the cosmos, but we can't see it! 🤫 This visual explains its gravitational effects. Love science visuals? Share your own & earn points!

📸: https://t.co/hEVEOxC8KI

#DarkMatter #Astronomy #Science

[Inst.Fís.Corpuscular @IFICorpuscular]

Compartimos algunas imágenes de nuestra compañera, la Dra. Emma Torró Pastor, durante la conferencia que impartió ayer en la @CACiencies con motivo de la celebración del #DarkMatterDay.

Fue una tarde estupenda y aprendimos mucho con ella.

¡Enhorabuena! 👩‍🔬🚀🌑

[Particles MDPI @Particles_MDPI]

✨Celebrate #DarkMatterDay with MDPI! ✨
Join our webinar featuring Prof. @ArmenSedrakian, EiC of @Particles_MDPI, who'll speak on “Axion Cooling of Neutron Stars”, highlighting how axions, as dark matter candidates, may influence stellar evolution.

🔗: https://t.co/WpZmxY1rAS