Graphic with the text "Action Alert: AAS urges advocacy against proposed cuts to science in President's Budget Request"
The President's Budget Request proposes a 47% cut to NASA Science, a 55% cut to NSF, and a 13% cut to the DOE Office of Science. AAS President Dr. Dara Norman sent a call to action to AAS members via email today. Urge your members of Congress to reject these cuts now! aas.org/reject-2027-...
Hi! For this study we focussed on merging stellar-mass black holes but our results might also apply to black holes that merge with neutron stars
very cool astrobite article for a new paper I'm involved with led by Mor Rozner 🧪🔭😎
Last week over 400 scientists of the @ligo.org - Virgo - KAGRA Collaboration met in Pisa, Italy for the LVK Meeting, the biannual gathering of the global community studying gravitational waves 🌟🌍
Princeton's Blair hall pictured on a sunny day covered in snow. A snowman can be seen at the base of the hall
A snowy scene of Princeton campus framed by trees. The central building features a white flag with the orange and black Princeton crest inside
A snowy photo of one of the old halls at Princeton University
A snowy scene showing Nassau hall at Princeton University with people gathered in the foreground
Snowy Princeton 😍❄️☃️
Our fourth LIGO @egovirgo.bsky.social KAGRA observing run has now drawn to a close. We will be busy analysing data for a while to come—watch out for more discovery announcements.
We will be back next year observing.docs.ligo.org/plan/
An infographic created by @astronerdika titled “MIRROR, MIRROR, reflecting our LASER beam… what’s the LOUDEST signal gravitational wave we’ve seen?” explaining the gravitational-wave discovery GW250114 and how the observation confirms Hawking’s area law. The visual shows the mirrors in a gravitational-wave interferometer speaking about the loudest event they have seen. There are several illustrations as follows: 1. A simplified diagram of a laser interferometer. A red laser beam from a labeled “LASER source” hits a beam splitter, travels down two perpendicular arms, reflects off round mirrors, and recombines at a labeled “detector.” A label near the top-right mirror reads: “the DETECTOR, signal seen by LIGO Hanford & LIGO Livingston.” 2. An illustration of a binary black hole merger, with two black circles spiraling inward. They are labeled ~34 solar masses and ~32 solar masses. Surrounding spiral lines represent gravitational waves. A nearby caption reads: “the SOURCE, Discovered in 2025, on January 14, at 08:22:03 UTC.” 3. A prominent speech bubble with white text on a purple background states: “GW250114 is the loudest & clearest signal we’ve seen!” A smaller note below reads: “as of January 2025.” 4. Another speech bubble reads: “AND we saw that Hawking was right too!” 5. Visual explanation of Hawking’s Area Law. Two small circles labeled “this BH” + “this BH” are shown to the left of a “<” symbol, pointing to a larger circle labeled “the surface area of the merged BH.” Below there is the explanatory sentence: “GW250114’s remnant event horizon area is larger than the sum of the individual areas.” 6. A section titled “the PAPERS” lists two arXiv references: https://arxiv.org/abs/2509.08054 and https://www.arxiv.org/abs/2509.08099 Note: This infographic plays off the classic line from Snow White, “Mirror, mirror on the wall…” Here, the “mirrors” are the ones inside the laser interferometer, reflecting light to detect passing gravitational waves.
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
A photo of me in a green vest holding a pink cake with yellow sprinkles that says "p h done". I have a big smile with a slightly anxious look in my eyes
Occupation: Student'nt
Thanks @pinkastrophysicist.bsky.social for making me the delicious cake and taking this photo of me being equally excited and terrified 5 minutes after submitting my PhD 🥰🎂🧑🎓
Front page news! 📰 Monash PhD researcher Christian Adamcwicz leads new LVK results revealing the mysterious 40 M☉ gap in black hole populations. Exciting clues about how the universe’s heaviest stars live and die! #BlackHoles #LVK #Astrophysics www.theaustralian.com.au/science/grav...
New masses in the stellar graveyard plot, showing astronomical observations of black holes and neutron stars. The number of gravitational-wave observations of black holes is overwhelming. The plot is arranged to look nice, the horizontal axis has no meaning, but the vertical one shows masses. We have a significant range of masses from about 1 solar mass to over 200 solar masses for our largest merger remnant. New out today is a neutron star black hole binary GW230518_125908, as well as a lot of binary black holes.
Results from the first part of our fourth LIGO @egovirgo.bsky.social KAGRA observing run are out today!
We're pleased to share the largest catalog of gravitational-wave observations with more discoveries of black holes and neutron stars
📰 arxiv.org/abs/2508.18082
🔭🧪⚛️☄️ #GWTC4
Congrats to everyone in the LVK collaboration who worked so hard to get these exciting results out 🤩🧪🔭
JWST slays with this bisexual lighting for the super fascinating bullet cluster 😍🌈
Welcome to a new era in astronomy and astrophysics ✨🔭🧪
Get ready to join us virtually for the reveal of Rubin's first images! #RubinFirstLook
🗓️ June 23, 2025
⌚️ 11am US EDT
🔗 ls.st/rubin-first-look-livestream
Detector dashboard showing all five detectors happily in Observing status
The gang are all here! Today we resumed our fourth observing run with LIGO Hanford, LIGO Livingston, Virgo, KAGRA and GEO all observing together!
You can check detector status live at online.ligo.org
☄️🔭🧪
Did you know NASA science is facing a 50% budget cut??? Please read this @astrobites.bsky.social post to learn more about it and what you can do astrobites.org/2025/04/15/h...
Publication day! With @sarinastro.bsky.social , Eric Howell, @plasky.bsky.social and Eric Thrane, we explore a hypothetical coincident neutron star-black hole merger and fast radio burst. We hope this work helps pave the way for future multimessenger detections! 🔭🧪⚛️
journals.aps.org/prd/abstract...
Live from the kestrel box: Season 2 is now streaming!
Our kestrel camera is back online – the first eggs have arrived. 🥚🥚 Drop by our kestrel couple 🦅 and watch the little family grow.
www.mpinat.mpg.de/kestrel-camera
#MPI_BioDiversum #KestrelCamera #LiveStream #Kestrels
Oh wow, this is *such* a cool concept - a 'game' procedurally generated from Wikipedia, in which you can literally traverse all of human knowledge and walk down rabbit holes
A poster for the economic blackout on February 28. It is a big red Jack rabbit on an aqua blue back ground. It says economic blackout in hand done black type. There are two black speech bubbles. One says “don’t buy stuff Friday February 28th. The other says we have power. Below it says No Amazon, Walmart, target, gas food, gas. Below that it says OK small business, use cash. Designed by Martha Rich.
I made this the other night while procrastinating, mainly because I thought all the posts about the blackout were boring. It feels like there is momentum bringing people together!
The best dark sky in the world - the Atacama Desert in Chile, which hosts many @eso.org telescopes - is under threat from an industrial project. 🔭
Astronomers can sign a petition in favour of moving the planned industrial project: docs.google.com/forms/d/e/1F...
#February11 is the International Day of Women and Girls in Science #IDWGS. Meet some of our international #WomenInSTEM through #HumansOfLIGO
1/🧵
Exciting news! We’re thrilled to announce that tapir Yuna gave birth to a rare and endangered Malayan tapir calf Sunday night. The newborn, covered in distinctive white spots and stripes resembling a fuzzy walking watermelon, is only the second tapir born in our 120-year history.
A bright comet seen next to the telescopes of the ESO observatory in Chile
ESO has some fantastic images of comet C/2024 G3 from their observatory in Chile
🧪🔭
Credit for this one belongs to F. Millour/ESO
The most shocking part of this photo are the words that have not been painted over as yet.
They aren't even all "DEI" words. And yet, they are being wiped away.
A re-write of history's lessons, the removal of the things that build a functioning society, to please the Emperor.
Here is a highly recommended thread that summarizes what has happened in scientific landscape in the US since Trump's inauguration. It makes for dystopian reading ⬇️
As expected, the Trump team is already deleting climate info from government websites. In anticipation, our team at Urban Ocean Lab created a permanent archive of 100+ key resources and published a permanent archive: www.urbanoceanlab.org/resource-hub 👩🏽💻
Petro, in 2021: “At NASA and Kennedy Space Center, our commitment to diversity, equity, inclusion and accessibility has been paramount to mission success.”
we have a pypi pypi.org/project/SK8p...
