All the lectures for the first #LISASchool that was held at Ecole de physique des Houches on Oct 7-17 2025 are now available on Youtube! 📽️ Check them out here 👉 www.youtube.com/playlist?lis...

Celebrate Wednesday with #GravitationalWave candidate #S251105aj If real, the source is probably a binary black hole (chirp mass ~22–44 solar masses) False alarm rate 1 in 39000 yr GraceDB gracedb.ligo.org/superevents/... GCN gcn.nasa.gov/circulars/42... Rating 🟦🍰🦢 [🧪🔭⚛️]

We are pleased to announce our discovery of #GW241011 and #GW241110 Both come from binary black holes where one black hole is much larger than the other. The larger black holes have large spin. Could these black holes have formed in a previous merger? ligo.org/science-summ... #O4IsHere 🔭🧪⚛️☄️

#GravitationalWave candidate #S251103f If real, the source is probably a binary black hole (chirp mass ~11–22 solar masses) False alarm rate 1 in 7.6×10^5 yr GraceDB gracedb.ligo.org/superevents/... GCN gcn.nasa.gov/circulars/42... Rating 🦆🍁🍦 [🧪🔭⚛️]

More discoveries to look forward to, including more overlap with Rubin observations! 🔭🧪

Can't even take a bath in peace!!

Halloween #GravitationalWave candidate #S251031cq If real, the source is probably a binary black hole (chirp mass ~22–44 solar masses) False alarm rate 1 in 45 yr GraceDB gracedb.ligo.org/superevents/... GCN gcn.nasa.gov/circulars/42... Rating 👻🍫 [🧪🔭⚛️]

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...

Delighted to share a couple of new articles in this expanding collection. First off, here's 'Gravitational waves from core-collapse supernovae with no electromagnetic counterparts' by Jade Powell and Bernhard Müller iopscience.iop.org/article/10.1...

For 61 years the #BBCWorldService has been broadcasting the latest in science via its weekly Science in Action programme. That dies in the next half hour, with this final edition, reflecting on the fall in trust in expertise driven by malign interests over recent years.

glad to see Chase’s work being brought up again !!

Back in 2010, my PhD student Chase Kimball led a study of the population of binary black holes that found evidence for repeated mergers arxiv.org/abs/2011.05332 There were still lots of uncertainties then. Now, these new discoveries are great candidates for hierarchical mergers! 🔭🧪⚛️☄️ #O4IsHere

43 years ago today, readers the world over opened their newspapers and gazed upon cow tools for the first time. happy birthday cow tools. you look great.

Wind power has cut at least £104bn from UK energy bill since 2010 - the cost of avoided gas and gas-fired power plants significantly outweiged subsidies for wind power Story by @fionaharvey.bsky.social www.theguardian.com/environment/...

...aaaand Melissa is now the strongest tropical cyclone ever measured in the satellite era. T8.5 = 185kt

As the single most important news story this year, I can't wait to see the detailed and central coverage this will get in every media outlet we have

Snoozy-time #GravitationalWave candidate #S251026bn If real, the source is probably a binary black hole (chirp mass ~5.5–11 solar masses) False alarm rate 1 in 6600 yr GraceDB gracedb.ligo.org/superevents/... GCN gcn.nasa.gov/circulars/42... gcn.nasa.gov/circulars/42... Rating 🍨🐑🍁 [🧪🔭⚛️]

love fall beary mush 🐻🍄🍂 #art #illustration

📌 Annual Industry Showcase Programme 🥗 Networking Lunch 🌍 External partners share real-world challenges 🧭 Doctoral researchers pitch research project plans 🧩 Hackathon-style sessions where teams co-create solutions to challenges 📢 Closing presentations 👉Register: www.divein.org.uk/2025/10/16/a...

In Super Mario 3D Land, the welcome screen that is displayed when starting the game for the first time appears to be much less enthusiastic about the game in the European version compared to the US version.

Celebrate Diwali with #GravitationalWave candidate #S251021u If real, the source is probably a binary black hole (chirp mass ~22–88 solar masses) False alarm rate 1 in 14 yr GraceDB gracedb.ligo.org/superevents/... GCN gcn.nasa.gov/circulars/42... Rating 🎆🐍 [🧪🔭⚛️]

How it feels citing your old papers: (Me et al. 2024b) = "per my last email" (Me et al. 2019) = "told you so!" (Me et al. 2009) = "as the prophesy foretold"

My afternoon nap interrupted by #GravitationalWave candidate #S251018bi If real, the source is probably a binary black hole (chirp mass ~22–88 solar masses) False alarm rate 1 in 100 yr GraceDB gracedb.ligo.org/superevents/... GCN gcn.nasa.gov/circulars/42... Rating 🐌🍦🍂 [🧪🔭⚛️]

If you like astronomy posts, then you'll probably really like the astronomy feeds! If you didn't know, Bluesky gives you direct control over your social algorithm. Instead of doomscrolling, look at space instead:

This afternoon's #GravitationalWave candidate #S251014cn If real, the source is probably a binary black hole (chirp mass ~11–22 solar masses) False alarm rate 1 in 100 yr GraceDB gracedb.ligo.org/superevents/... GCN gcn.nasa.gov/circulars/42... Rating 🍪🧋🦆 [🧪🔭⚛️]

Catching up with #GravitationalWave candidate #S251013x If real, the source is probably a binary black hole (chirp mass ~22–88 solar masses) False alarm rate 1 in 2.1 yr GraceDB gracedb.ligo.org/superevents/... GCN gcn.nasa.gov/circulars/42... gcn.nasa.gov/circulars/42... Rating 🐶🐞 [🧪🔭⚛️]

Ada Lovelace Day has begun! As midnight arrives on Kiritimati Island in the middle of the Pacific Ocean, our global celebration of women in science, technology, engineering and maths begins! Join us in celebrating by posting about your fave women in STEM #ALD25!

Why invest in the future when you can polute instead. Bad for the environment, bad for the economy, bad for your health.

Celebrate the full moon with #GravitationalWave candidate #S251006dd If real, the source is probably a binary black hole (chirp mass ~5.5–11 solar masses) False alarm rate 1 in 5.9 10^7 yr GraceDB gracedb.ligo.org/superevents/... GCN gcn.nasa.gov/circulars/42... Rating 🐇🏔️🥮 [🧪🔭⚛️]

I like my plot of equipotentials a lot, but I can never shake the fact that @sabinastro.bsky.social calls it the Teenage Mutant Ninja Turtle plot... zingale.github.io/stars/notebo...

@giantmolecular.cloud, Bill Smith and I wrote about why the new modification to the eligibility rules for the premier NSF graduate fellowship is actually A Really, Really Big Deal -- and not in a good way.

This list is astonishing. Individuals recording rainfall for 50, 60, 70 years. 👇All hail the reliable people!

In November 1887, Northwestern’s astronomy journey began with the Dearborn Telescope. 135+ years later, @nuciera.bsky.social leads one of the top 10 astronomy programs in the nation. 🔭 Explore the rich history: sites.northwestern.edu/highlightsof... #CIERA #Northwestern #Astronomy #SpaceScience

I'd vote for more cheesecake and less pollution

Count down the top 10 breakthroughs in the 10 years since our first detection with @space.com. Do you agree with their picks? www.space.com/astronomy/li... by @robleascijorno.bsky.social #GW10Years 🔭 ⚛️ 🧪

Overnight #GravitationalWave candidate #S250929c If real, the source is probably a binary black hole (chirp mass ~11–44 solar masses) False alarm rate 1 in 1.3 yr GraceDB gracedb.ligo.org/superevents/... GCN gcn.nasa.gov/circulars/42... Rating 🐈‍⬛ [🧪🔭⚛️]

Second #GravitationalWave candidate of the day #S250927cy If real, the source is probably a binary black hole (chirp mass ~22–44 solar masses) False alarm rate 1 in 0.6 yr GraceDB gracedb.ligo.org/superevents/... GCN gcn.nasa.gov/circulars/42... Rating 🍟 [🧪🔭⚛️]

Saturday #GravitationalWave candidate #/S250927ck If real, the source is probably a binary black hole (chirp mass ~44–88 solar masses) False alarm rate 1 in 1.0 yr GraceDB gracedb.ligo.org/superevents/... GCN gcn.nasa.gov/circulars/42... Rating 🖌️ [🧪🔭⚛️]

This is FINE, everything is FINE We worked with a bunch of talented animators and artists on a music video for The Living Tombstone’s remix of Everything is Fine!!! CHECK IT OUT NOW!

Mirror, mirror, reflecting our [LASER] beam... What is the loudest [gravitational wave] signal that we've seen? It’s #GW250114! (Yes, it’s been two weeks since it was announced, but I can still celebrate! 🎉 ) #EinsteinWasRight #HawkingWasRight @ligo.org @egovirgo.bsky.social

I missed everyone talking about the 100th anniversary of Cecilia Payne-Gaposchkin’s dissertation yesterday. BUT, just four short months ago I wrote a whole thread about her and work, so idk maybe I was early?

We *absolutely* should celebrate it. Do your part by enjoying the 200+ page masterpiece in its entirety on ADS! ui.adsabs.harvard.edu/abs/1925PhDT... 🔭 Special shoutout to Figure 2, an incredible piece of art that I want on my wall (and suspect could even make an excellent tattoo if executed well?)

Things I Google after eating perhaps one too many biscuits: arxiv.org/abs/2509.18903

<looks over at bulleted outline of JWST proposal, sighs>

⏰ Start your countdown clock for the exact moment of the autumn #equinox, 19:19 (UK) 22nd Sept, when the Northern hemisphere and Southern hemisphere are equally illuminated. Today the day length in 🏴󠁧󠁢󠁳󠁣󠁴󠁿Scotland is ~the same as in 🇳🇿New Zealand 🤓🧪🔭 📷: National Maritime Museum, Greenwich

The #GR24Amaldi16 art gallery is now online! Some really amazing pieces on display - I especially like the papier mâché and clay one by Riccardo Buscicchio (And of course all of @theastrophoenix.bsky.social's art but does that need to be said?) 🐡🔭🧪 uofgravity.github.io/amaldi-art/

The climate impacts of fossil fuel CO₂ will last longer than nuclear waste.

Cleanse your timeline with science cakes!

Yesterday's #GravitationalWave candidate #S250917aq If real, the source is probably a binary black hole (chirp mass ~5.5–11 solar masses) False alarm rate 1 in 2.9×10^5 yr GraceDB gracedb.ligo.org/superevents/... GCN gcn.nasa.gov/circulars/41... gcn.nasa.gov/circulars/41... Rating 🍰🐑🦢 [🧪🔭⚛️]