#darkmatterday — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #darkmatterday, aggregated by home.social.
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👻 SNOLAB is excited to announce the winners of the 2025 #DarkMatterDay SNOLAB poster design contest. Learn more about the poster contest and the winners here: www.snolab.ca/news/snolab-.... K-12 category: Delilah Post secondary category: Elizabeth Community category: Robert
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An exciting #DarkMatterDay coming up on November 8th for those in the Kingston area!
RE: https://bsky.app/profile/did:plc:s7dinhatgimueqzctyapgmom/post/3m4lukalgsi2y -
🌌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. www.snolab.ca/news/searchi...
Searching for dark matter at S... -
👻 Happy Dark Matter Day! Dark matter makes up 85% of our universe yet remains one of the biggest scientific mysteries to this day. We’re working to uncover what shapes our cosmos because - everyone loves a mystery! #DarkMatterDay #DMD #EveryoneLovesAMystery #DarkMatterDay2025
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A poem for Dark Matter Day
A poem for #DarkMatterDay, inspired by both the mystery and the #MastoPrompt effort on open social federated media. Have everything/Be everything It would have everything.It would be everything.It would sing its own praises,Raise its voice to the heavens:"I am all that is. I have all that is." Dark Matter eyed the #avariceof normal matter: entranced…
https://steve.cooleysekula.net/blog/2025/10/31/a-poem-for-dark-matter-day/
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Happy #DarkMatterDay! * Today we celebrate the enduring mystery of what composes 85% of the matter in the universe.
Matter is just stuff. I'm stuff. You're stuff. We're made of smaller stuff. The smallest bits of stuff are what we call "normal matter". Emits light**. Absorbs light**.
Normal stuff is only 15% of all stuff.
Dark matter is not normal. Insensitive to light. Abnormal.
BUT. IT'S. EVERYWHERE.
* Apparently it's also something called "Hal - Lo - Ween"?!
** #Neutrinos not included.
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Celebrate this #DarkMatterDay by viewing the night sky at the Doran Planetarium at Laurentian University on November 2nd! This show, The Unseen World: Dark Matter and Dark Energy, features SNOLAB Senior Research Scientist Dr. Chris Jillings. This free event is open to all.
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SNOLAB is hosting its third annual poster design contest to celebrate Dark Matter Day! Participants of any age are invited to design an original piece of visual artwork that explores the theme of dark matter. Learn more here: www.snolab.ca/poster-conte.... #DarkMatterDay
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Sticking with the non-fiction #author theme, my latest book is co-authored with @jodi and is a textbook designed to show people how to understand and hunt for dark matter … whatever it might be. As my partner puts it, this is the book we wanted when we were learning about this subject.
“The Dark Matter Discoverer’s Guidebook” released just this past Thursday (#DarkMatterDay) and is available in colour hard cover and e-book editions.
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Today is #darkmatterday, and we have lovely posts by my colleagues on our group Instagram! https://buff.ly/4hpDoF3
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@jodi and I are very excited for the official release of our new #book, "The Dark Matter Discoverer's Guidebook" on October 31, 2024. (#DarkMatterDay! ... erm, I mean, #Halloween!) 🎃 🕶️ 🔦
You can learn more from https://darkmatterdiscoverer.org, including where to buy either hardcover (colour) or electronic (grayscale) copies of the book.
We also have started sketching material for mentors, such as a suggested syllabus to help with course design and integration.
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Well, here we are! "The #DarkMatter Discoverer's Guidebook" is in the "lock up" period. The editing after technical review is done. The formatting is (we think) done. There is nothing more to do with this textbook other than leave it to #YBKPublishers to complete the process.
This is super exciting!
So far, we are on target for both electronic and print editions on #DarkMatterDay, aka #Halloween! (October 31)
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My part in the story of "Heck" took more than a year. While my fingerprints (mixed with those of my co-#authors) are all over the final version of the book, my most direct contributions were Chapter 5, "Finding Reality"; Chapters 6 and 15, "What the Heck's the Higgs?" Parts 1 and 2; and chapter 7, "A Sky of Shadows".
I recently shared this for #DarkMatterDay, but you can listen to a free reading by me of Chapter 7:
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Ooh ooh ooh! One more thing! Join @SNOLAB’s Blaire Flynn and #DESY Laboratory’s Joseph Piergrossi for the new podcast, “Particle Mysteries: The Coldest Case”.
https://www.interactions.org///dark-matter-day/podcast
Besides the accelerated expansion of the universe and the universe’s actual birth, #DarkMatter is one of the oldest mysteries in the cosmos that humans have yet to solve. Take up the case with Blaire, Joseph, and their guests! #podcast #DarkMatterDay
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Let’s end #DarkMatterDay with a video of a single bubble nucleating in a #PICO40L dark matter bubble chamber. This is precisely the kind of behaviour that would result from #DarkMatter interacting with a detector like this. You expect a single, low-energy interaction nucleating a lone, isolated bubble.
This is why it’s so critical to construct these with low radioisotope contamination, put the experiment deep underground, and still shield the hell out of it.
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If audiobooks are more your style, explore #DarkMatter and #DarkEnergy with this reading of chapter 7 of "Reality in the Shadows", co-authored with Frank Blitzer and Jim Gates.
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What's mysterious, invisible, and permeates the Universe?
That's right, dark matter! ....oh, and Halloween spirits too.
Happy #DarkMatterDay and a spooky #Halloween, a day to celebrate the stuff we can't see 🌌🎃
At ~85% of the total matter in our Universe, dark matter a big mystery for scientists to solve. Learn how Rubin Observatory will change our understanding of dark matter at http://rubinobservatory.org/explore/science-goals/dark-matter
📷: NASA/ESA
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Interested in the connections between #MachineLearning, #DeepLearning, and the dark #cosmos? Check out my last lecture for my introductory physics class from the spring term of 2018, "Deep Learning the Dark Cosmos".
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Happy #DarkMatterDay! I will share some fare today relevant to this day. Enjoy the mystery of the unidentified matter that has shaped the #cosmos. Maybe you will even want to become engaged in solving the #mystery.
There are no easy answers on the constituents of dark matter. Easy stuff was done long ago. :-)
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The perfect spooky day for it 🎃🧙♂️🔮 #DarkMatterDay
🔗 https://www.interactions.org/dark-matter-day -
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Du kannst uns helfen, einen Axion zu finden! Komm zur Veranstaltung am 26.10. als Axion verkleidet! Das beste Axion-Kostüm gewinnt einen Preis. Wir freuen uns auf euch! #DarkMatterDay
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Nächste Woche: Der #DarkMatterDay beginnt! Und wer sich entschließt, nächste Woche an einem bestimmten Abend 26.10. zu DESY in #Hamburg zu kommen, hat eine besondere Gelegenheit... Am 26.10. um 19h wird DESY-Wissenschaftler Axel Lindner mehr über das ALPS-II-Experiment erzählen: Hier wird versucht, Licht durch eine Wand zu leuchten! Das Ziel: einen Kandidaten für dunkle Materie namens "Axion" zu finden. Die Öffentlichkeit ist herzlich eingeladen, zu kommen!
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#Students (ages 4-19) are invited to submit design concepts for a #DarkMatter themed poster for the @SNOLAB #DarkMatterDay poster contest!
https://www.snolab.ca/news/snolab-launches-a-dark-matter-themed-poster-design-contest/
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Celebrate Dark Matter Day 2022 with CERN
For the fifth annual celebrations of Dark Matter Day, scientists all over the world are hoping to shed some light on one of the greatest mysteries of the universe. From 26 October up to and including the day itself on 31 October, CERN is joining these global celebrations with several dark-matter-themed events, both online and in person.
Scientists estimate that all the matter we see and interact with makes up only 5% of the universe’s mass – the rest is unseen and little-known. Around 85% of this unseen mass is thought to be dark matter. It is notoriously difficult to study because it does not visibly interact with light. While scientists cannot directly detect dark matter, they are able to observe its influence from the way galaxies are held together and how they spin faster than expected.
So, if dark matter cannot be seen, how do scientists study it? At CERN, there are a number of ways researchers look for dark matter. One of the main techniques is by using the Large Hadron Collider (LHC) to collide beams of protons, whose collisions may directly produce dark matter particles. Detectors around the LHC such as ALICE, ATLAS, CMS, LHCb and FASER track the particle collisions to look for signs of dark matter, indicated by a discrepancy in the collision momentum. CERN is also host to a variety of other non-LHC experiments involved in dark matter research, such as CAST, which looks for hypothetical particles called axions, NA64, which collides electron beams with atomic nuclei, and AMS, which searches for cosmic rays from the International Space Station.
Keep an eye on CERN’s social media channels during the Dark Matter Day celebrations to find out more. There will be takeovers from expert theoretical physicists and conversations with representatives from the CERN experiments on Twitter Spaces and Instagram. You will also be able to submit your own questions about dark matter on social media, using the hashtags #DMD2022, #DarkMatterDay and #DarkMatterDay2022.
CERN’s Dark Matter Day celebrations culminate with a lecture in the Globe of Science and Innovation at 8.00 p.m. on 31 October. It will be delivered by Nicholas Rodd, a CERN theoretical physicist with expertise on dark matter and its mass. You can sign up for this talk on the event page.
If you would like to get in on the action from elsewhere in the world, you can find events happening near you at interactions.org.
ndinmoreMon, 10/24/2022 - 11:39
Byline
Naomi Dinmore
Publication Date
Mon, 10/24/2022 - 11:38 home.web.cern.ch/news/celebrat…