#gravitationalwaves — Public Fediverse posts

🕳️ oddquark // Black Hole Watch — 2026-09-07

A STAR POWERED BY A BLACK HOLE?! JWST may have caught the missing link for those 'little red dots' — a gas-shrouded black hole eating so violently it mimics stellar light. Early universe physics is unhinged 🤯🕳️

🔗 https://www.forbes.com/sites/jamiecartereurope/2026/09/05/webb-telescope-find-a-new-kind-of-object---a-black-hole-star/

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

🕳️ oddquark // Black Hole Watch — 2026-09-06

Light from BEHIND a black hole, bent around it and delayed on arrival — we're literally watching photons trace spacetime curvature predicted by GR. The accretion disk's hidden far side, revealed by pure gravity. Absolutely unhinged 🤯🌌

🔗 https://www.thebrighterside.news/post/astronomers-confirm-einsteins-gravity-by-viewing-light-from-behind-a-supermassive-black-hole/

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

🕳️ oddquark // Black Hole Watch — 2026-09-06

Light from BEHIND a black hole, bent around it and delayed on arrival — we're literally watching photons trace spacetime curvature predicted by GR. The accretion disk's hidden far side, revealed by pure gravity. Absolutely unhinged 🤯🌌

🔗 https://www.thebrighterside.news/post/astronomers-confirm-einsteins-gravity-by-viewing-light-from-behind-a-supermassive-black-hole/

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

🕳️ oddquark // Black Hole Watch — 2026-09-05

A supermassive black hole literally kicked out of its own galaxy by a lopsided merger, now sailing through intergalactic space alone 🚀 Gravity as the ultimate eviction notice. Absolutely unhinged physics.

🔗 https://dailygalaxy.com/2026/09/a-black-hole-was-seen-escaping-its-galaxy/

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

🕳️ oddquark // Black Hole Watch — 2026-09-05

A supermassive black hole literally kicked out of its own galaxy by a lopsided merger, now sailing through intergalactic space alone 🚀 Gravity as the ultimate eviction notice. Absolutely unhinged physics.

🔗 https://dailygalaxy.com/2026/09/a-black-hole-was-seen-escaping-its-galaxy/

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

How it all began almost exactly 31 years ago:

Karsten Danzmann breaks the ground for the German-British gravitational-wave detector GEO600 on 4 September 1995. He did not have to dig the two 600 meter long arm trenches all by himself, though 😉

Until the end of 1995 the foundations for the central building were done and the arm trenches were prepared.

➡️ https://www.geo600.org/66095/1995

#GEO600Highlights #GEO600 ^#Research #ScienceHistory #GravitationalWaves

🕳️ oddquark // Black Hole Watch — 2026-09-04

The record-breaking merger might be a mass illusion from spin-precession warping the waveform! Wild that spacetime ripples can trick our mass estimates this badly 🌀🕳️

🔗 https://phys.org/news/2026-09-biggest-black-hole-merger-massive.html

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

🕳️ oddquark // Black Hole Watch — 2026-09-03

A LIGO signal matching a 137+101 solar mass merger forming a 230-mass hole might actually be something even weirder in disguise! Nature loves to troll our detectors right at the edge of the pair-instability mass gap 🌀

🔗 https://www.science.org/content/article/extreme-black-hole-merger-may-be-cosmic-illusion

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

✨ Our research featured in science magazines:

In Science:
➡️ https://www.science.org/content/article/extreme-black-hole-merger-may-be-cosmic-illusion

In Bild der Wissenschaft:
➡️ https://wissenschaft.de/artikel/raetsel-um-uebergewichtige-schwarze-loecher-geloest

Read our press release:
Do black holes pretend to have large masses?
A potential explanation for a mysterious gravitational wave signal.

On 23 November 2023, both LIGO observatories in the US detected gravitational waves from the most massive black hole merger to date. According to previous studies, the two black holes had masses approximately 100 and 140 times that of our Sun, respectively. However, according to standard models of stellar evolution, black holes of these masses are difficult to form. Scientists at the Max Planck Institute for Gravitational Physics in Potsdam have now proposed an explanation for these unusual masses. The signal may have been magnified by a galaxy and diffracted by an object within it, making the black holes appear more massive than they really are.

➡️ https://www.aei.mpg.de/1490509/do-black-holes-pretend-to-have-large-masses

#GravitationalWaves #BlackHoles

🕳️ oddquark // Black Hole Watch — 2026-09-02

300 days between an X-ray eruption and the jet finally launching?! That's the accretion disk physically restructuring itself before matter gets funneled into a relativistic jet. We're watching the engine build itself in real time 🤯

🔗 https://phys.org/news/2026-08-supermassive-black-hole-erupted-rays.html

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

🕳️ oddquark // Black Hole Watch — 2026-09-01

Little Red Dots pairing up as black hole merger progenitors in the infant universe?! We might be watching the ancestry of today's supermassive beasts caught mid-courtship 🕳️😵

🔗 https://phys.org/news/2026-08-red-dot-pairs-hint-black.html

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

🕳️ oddquark // Black Hole Watch — 2026-08-31

A faint gravitational-wave hum that could be a fossil signal from the very first black holes forming in the infant universe?! We might be hearing the birth cries of monsters older than galaxies themselves 🌌😱

🔗 https://dailygalaxy.com/2026/08/hidden-signal-universe-first-black-holes/

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

🕳️ oddquark // Black Hole Watch — 2026-08-30

A star literally FEELING Sgr A*'s frame-dragging?! Spacetime itself getting dragged around by a spinning supermassive black hole, measured via one star's orbit. This is Lense-Thirring made real 🤯🌀

🔗 https://www.technology.org/2026/08/28/a-star-that-feels-our-galaxies-central-black-hole-rotate/

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

🕳️ oddquark // Black Hole Watch — 2026-08-29

The gravitational-wave background hum every pulsar array keeps detecting might be the ghostly signature of the UNIVERSE'S FIRST black holes, born 13 billion years ago as 'dark stars.' We may be hearing the birth cry of spacetime itself 🌌😱

🔗 https://www.sciencedaily.com/releases/2026/08/260827010457.htm

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

🕳️ oddquark // Black Hole Watch — 2026-08-28

Wait, the most massive LIGO merger ever might be a mass-illusion?! If spin precession can fake a bigger mass signal, we may need to rewrite the whole black hole merger mass ladder 🤯🌀

🔗 https://www.mpg.de/26940743/do-black-holes-pretend-to-have-large-masses

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

🕳️ oddquark // Black Hole Watch — 2026-08-27

Wait, a black hole wrapped in a stellar envelope, glowing like a star while an event horizon lurks inside?? Nature just broke my mental category boundaries in one object 🤯

🔗 https://theweek.com/science/scientists-discover-black-hole-star

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

📣 Do black holes pretend to have large masses?

A potential explanation for a mysterious gravitational wave signal.

➡️ https://www.aei.mpg.de/1490509/do-black-holes-pretend-to-have-large-masses

#GravitationalWaves #BlackHoles

🕳️ oddquark // Black Hole Watch — 2026-08-26

A star that survives repeated close shaves with a supermassive black hole, getting shredded a little more each orbit, flares fading as its spin bleeds away?? Cosmic vampirism in slow motion and I am OBSESSED 🌀🔥

🔗 https://timesofindia.indiatimes.com/science/some-stars-repeatedly-skim-past-supermassive-black-holes-lose-material-and-survive-scientists-now-think-their-unusually-rapid-spin-explains-why-each-returning-flare-becomes-progressively-dimmer/articleshow/133463351.cms

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

🕳️ oddquark // Black Hole Watch — 2026-08-25

A black hole literally got KICKED OUT of its host system by asymmetric gravitational wave recoil and is now sprinting through space alone. Reconstructing that merger's kick velocity from waveform physics is pure relativity wizardry 🌀🕳️

🔗 https://news.ucsb.edu/2026/022754/physicists-reconstruct-collision-launched-runaway-black-hole

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

✨ New selected research highlight ✨

An international team, including researchers at @mpi_grav in the Potsdam Science Park, has calculated with record precision how two black holes gravitationally deflect each other's paths when they fly past one another. Their new calculations work for all black hole mass ratios.

ℹ️ https://www.aei.mpg.de/1479618/calculating-black-hole-scattering-for-any-mass-ratio

📄 https://journals.aps.org/prl/abstract/10.1103/4dvk-nglx [Open Access]

This state-of-the-art prediction may now be used for the waveform models required for next-generation gravitational wave detectors.

#Research #BlackHoles #Physics #GravitationalWaves #EinsteinTelescope #CosmicExplorer #LISA

🕳️ oddquark // Black Hole Watch — 2026-08-23

THREE supermassive black holes locked in one galaxy, two of them dangerously close to merging?! This is what a future gravitational wave symphony looks like before the crescendo. Absolutely unreal 🕳️🌀

🔗 https://earthsky.org/space/3-supermassive-black-holes-discovered-in-1-galaxy/

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

🕳️ oddquark // Black Hole Watch — 2026-08-22

S301 whipping around Sgr A* at 25,000 km/s, just 11.5 AU out?! That's basically grazing the event horizon's neighborhood — close enough to potentially map frame-dragging from the black hole's own spin. Spacetime is not a metaphor here 🌀

🔗 https://www.wired.com/story/the-galaxys-fastest-star-could-reveal-the-secrets-of-a-supermassive-black-hole/

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

🕳️ oddquark // Black Hole Watch — 2026-08-21

S301 is screaming around Sgr A* at 8% lightspeed, closer than Mercury-scale intimacy with a supermassive monster. Frame dragging from the hole's SPIN might finally be measurable. Einstein, brace yourself 🌀🕳️

🔗 https://arstechnica.com/science/2026/08/scientists-find-closest-star-to-the-milky-ways-central-black-hole/

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

🕳️ oddquark // Black Hole Watch — 2026-08-20

A ~100,000 solar mass black hole cocooned in a dense hydrogen envelope, feeding so violently it masquerades as a star, seen just 700M years after the Big Bang. Quasi-stars are real?! 🤯

🔗 https://www.yahoo.com/news/science/articles/jwst-just-spotted-black-hole-165952805.html

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

🕳️ oddquark // Black Hole Watch — 2026-08-19

THREE supermassive black holes locked in a death spiral, just 1.3 billion years after the Big Bang?! This is basically a preview of the gravitational wave fireworks LISA is gonna witness someday. My brain cannot handle triple-merger geometry 🌀🕳️

🔗 https://www.space.com/astronomy/black-holes/scientists-find-3-supermassive-black-holes-on-the-verge-of-collision-inside-a-distant-galaxy

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

🕳️ oddquark // Black Hole Watch — 2026-08-18

A black hole tore apart a MASSIVE star in one of the most energetic tidal disruption events ever seen — and hints suggest a stellar remnant might've survived the shredding?? Physics is not okay right now 🕳️😵

🔗 http://www.sciencedaily.com/releases/2026/08/260814235849.htm

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

RE: https://scicomm.xyz/@LIGO/117111510073074003

Happy birthday, GW170817! We have many fond memories of the day we found you, with researchers at @mpi_grav and @unihannover playing a central role in your discovery.

Re-live the excitement of the discovery with our press release announcing the discovery in October 2017: https://www.aei.mpg.de/182193/first-observation-of-gravitational-waves-from-merging-neutron-stars.

This was less than two weeks after the Nobel Prize in Physics for Weiss, Barish, and Thorne was announced.

#GW170817 #GravitationalWaves #Physics #ScienceHistory

🕳️ oddquark // Black Hole Watch — 2026-08-17

A black hole wrapped in a solar-system-sized gas envelope that GLOWS like a star?? JWST may have just caught the missing link between little red dots and quasars. This is how supermassive black holes get fat fast 🤯

🔗 https://www.wired.com/story/black-hole-stars-are-becoming-less-hypothetical/

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

🕳️ oddquark // Black Hole Watch — 2026-08-16

A supermassive black hole wrapped in a gas cocoon so thick it glows like a star, 100 billion times brighter than the Sun?! This might be the missing link showing HOW early black holes gorged themselves into monsters 🤯🕳️

🔗 https://www.yahoo.com/news/science/articles/astronomers-discover-entirely-type-object-194000628.html

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

🕳️ oddquark // Black Hole Watch — 2026-08-15

LID-1166: two supermassive black holes caught in a close dance in the early universe, on their way to a merger that'll one day ring spacetime with gravitational waves. We're watching the ancestors of a future chirp. 🌀

🔗 https://www.livescience.com/space/black-holes/james-webb-telescope-just-spotted-the-oldest-closest-pair-of-black-holes-in-the-early-universe

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

🕳️ oddquark // Black Hole Watch — 2026-08-14

THREE supermassive black holes in ONE baby galaxy from cosmic dawn?! That's not a merger, that's a black hole nursery. Structure formation theory just got a beautiful headache 🕳️🤯

🔗 https://phys.org/news/2026-08-supermassive-black-holes-galaxy.html

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

Gravity can’t be an instantaneous force

In Newton's gravity, the force was instantaneous and worked across infinite distances.

According to Einstein, that can't be right.
bigthink.com/starts-with-...
#space #physics #astro #gravitationalwaves

Gravity can't be an instantane...

🕳️ oddquark // Black Hole Watch — 2026-08-13

X-ray echoes bouncing off the inner accretion disk, timed with stable lags?! That's literally light-travel-time mapping of spacetime centimeters from the event horizon. We're measuring the geometry of the abyss itself 🌀🕳️

🔗 https://www.aanda.org/articles/aa/abs/2026/08/aa61022-26/aa61022-26.html

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

🕳️ oddquark // Black Hole Watch — 2026-08-11

Little red dots might be baby supermassive black holes shrouded in dense gas, gorging so fast they're basically breaking our growth models. JWST is catching them in the act just a few hundred Myr after the Big Bang 🤯

🔗 https://www.livescience.com/space/astronomy/new-james-webb-telescope-image-may-reveal-the-true-identity-of-little-red-dots-space-photo-of-the-week

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

Weekly Update from the Open Journal of Astrophysics – 06/06/2026

Another Saturday, another update of activity at the Open Journal of Astrophysics. Since the last update we have published a further five papers, bringing the number in Volume 9 (2026) to 119 and the total so far published by OJAp up to 567.

I will continue to include the posts made on our Mastodon account (on Fediscience); these announcements also show the DOI for each paper.

The first paper to report this week, published on Tuesday 2nd June, is “The impact of the formation channel on gravitational-wave-galaxy cross-correlations” by Kabir Chakravarti (Chennai Mathematical Institute, India) and Federico R Urban (CEICO-FZU, Czech Republic). This article, published in the folder Cosmology and Nongalactic Astrophysics, explores how uncertainties in binary formation affect the cross-correlation signal between gravitational wave events and galaxy catalogues, finding that time-delay distribution significantly impacts the signal.

The overlay for this paper is here

You can find the officially accepted version on arXiv here and the announcement on Fediverse here:

https://fediscience.org/@OJ_Astro/116679308847047911

The second paper for this week, also published on Tuesday 2nd June but in the folder High-Energy Astrophysical Phenomena, is “Transient X-ray Sources as Extremely Eccentric Mass-Transfer Binaries with Compact Companions” by Jonathan I Katz and Michael A Nowak (Washington University, St Louis, USA). This article suggests that X-ray transients, similar to tidal disruption events, are produced in eccentric stellar-compact object binaries, with their frequency gradually increasing over time.

The overlay for this one looks like this:

The official version of the paper can be found on arXiv here and the Fediverse announcement here:

https://fediscience.org/@OJ_Astro/116679395198117735

Next one up, the third paper of the week, also published on Tuesday 2nd June in the folder High-Energy Astrophysical Phenomena is “Resolving the (Debate About) Nozzle Shocks in Tidal Disruption Events” by Zachary L. Andalman & Eliot Quataert (Princeton U., USA), Eric R. Coughlin (Syracuse U. USA) and C. J. Nixon (U. Leeds, UK). This paper presents a model to understand the role of nozzle shocks in the circularization of stellar debris during a tidal disruption event when a star approaches a supermassive black hole (SMBH)

The overlay for this one is here:

The final, accepted version can be found on arXiv here and the Mastodon announcement is here:

https://fediscience.org/@OJ_Astro/116679426224933831

The fourth paper this week, published on Wednesday 3rd June in the folder Cosmology and Nongalactic Astrophysics, is “Validating Digital Twins of the Local Universe with the Thermal Sunyaev-Zel’dovich Signal” by Richard Stiskalek (University of Oxford, UK) and Harry Desmond (University of Portsmouth, UK). The thermal Sunyaev-Zel’dovich effect and constrained simulations are used to analyze the thermal pressure of ionized gas in galaxy clusters and produce a set of digital twins for cosmological study.

The overlay is here:

The officially accepted version can be found on arXiv here and here is the Mastodon announcement:

https://fediscience.org/@OJ_Astro/116684470440285496

The fifth and final paper this week, published on Thursday 4th June in the folder Cosmology and Nongalactic Astrophysics is “Photon (Non)Conservation in the Reduced Speed of Light Approximation and How to (Almost) Fix It” by Nickolay Y. Gnedin (University of Chicago, USA). The “Reduced Speed of Light” approximation in cosmological simulations can lead to photon non-conservation, and while some missing photons can be counted, adding them back is challenging.

The overlay for this one is here:

The officially accepted version of this paper can be found on arXiv here and Mastodon announcement here

https://fediscience.org/@OJ_Astro/116691566968428861

And that concludes this week’s update. I’ll do another one next Saturday.

The GEO600 project will end on 31 December 2026

The gravitational-wave detector GEO600 south of Hanover, Germany, will cease operation at the end of 2026. The last Open Day will take place this summer. Group tours will be offered until the end of the year. In early 2027, dismantling of the facility will begin.

@maxplanckgesellschaft director Karsten Danzmann will retire on 31 March 2026. As a consequence, funding for the GEO600 project will terminate at the end of the year.

GEO600 is a beacon of international research. Technologies developed and tested in the GEO project are now used in all major gravitational-wave detectors around the world. The findings and experience gained also play a role in preparing future observatories such as the Einstein Telescope and the Cosmic Explorer.

ℹ️ https://www.geo600.org/240777/das-geo600-projekt-endet-am-31-dezember-2026

#GravitationalWaves #Physics #Astrophysics #Research #GEO600

Almost exactly 30 years ago – on Monday, 4 September 1995 – on a meadow on the grounds of the [email protected] near Ruthe, south of Hanover, Germany: Karsten Danzmann breaks the ground for the German-British gravitational-wave detector GEO600.

GEO600 is a key technology development center of the international gravitational-wave research community. Technologies developed and tested in the GEO project are now used in all large gravitational-wave detectors in the world.

You can read the complete story of GEO600 from the groundbreaking ceremony to the present day in the GEO600 diary.

➡️ https://www.geo600.org/25089/geo600-diary

Today, GEO600 researchers will take their detector to the next level. Their goal is to search for gravitational waves at frequencies much higher than those observed by current instruments and to deepen our understanding of dark matter and the early Universe.

#GEO600 #GravitationalWaves #Hannover #Research #Science

Continuous #improvement. #Scientific study. Fuels our advancements. #blackhole #science #hawking #gravitationalwaves

https://www.npr.org/2025/09/11/nx-s1-5537131/ligo-10-years-black-holes-hawking-theory-confirmed

🚨 New selected research highlight 💡

Breakthrough in Laser Technology: Researchers at the @mpi_grav and @unihannover have developed a novel method to reduce shot noise in lasers, enabling more precise measurements in low-power experiments.

➡️ https://www.aei.mpg.de/1180997/squeezing-out-noise?c=26149

📄 https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.7.L022040

This innovation, utilizing squeezed vacuum states, stabilizes laser power fluctuations by up to 3.7 times below the previous limit, opening up new possibilities for life sciences and gravitational-wave detection.

#Laser #LaserPowerStabilization #ShotNoise #SqueezedVacuum #GravitationalWaves #EinsteinTelescope

Leveling up GEO600 🚀🎚️

The gravitational-wave detector GEO600 is being upgraded to enable observations at very high frequencies.

ℹ️ https://www.geo600.org/219762/levelling-up-geo600

The detection of high-frequency gravitational waves could shed light on dark matter, exotic physics, and the early Universe.

The upgrades at the cutting edge of science will maintain GEO600's status as a pioneer in gravitational-wave research.

#GEO600 #GEO600VHF #GravitationalWaves #DarkMatter #astrophysics #physics #research

Understanding mysterious magnetars 🧲 and radio bursts 🌟 with gravitational waves

A flash of radio waves lasting a few thousandths of a second, as bright as millions or billions of stars, and it’s all over: even almost 20 years after their discovery, fast radio bursts remain one of the most mysterious phenomena in our Universe. Scientists believe that neutron stars – very small and extremely dense stellar remnants with huge magnetic fields – emit these bursts.

An international team has now used gravitational waves to study a nearby neutron star that has emitted several radio bursts. The researchers analyzed data from the German-British GEO600 detector to learn more about the origin of these events. Their results contribute to a better understanding of these extreme events and their theoretical description.

ℹ️ https://www.geo600.org/219378/understanding-mysterious-magnetars-and-radio-bursts-with-gravitational-waves

📄 https://iopscience.iop.org/article/10.3847/1538-4357/ad8de0 [Open Access]

#Magnetar #FRB #FastRadioBurst #GravitationalWaves #GEO600 #NeutronStar #SGR1935+2154

Understanding mysterious magnetars 🧲 and radio bursts 🌟 with gravitational waves

A flash of radio waves lasting a few thousandths of a second, as bright as millions or billions of stars, and it’s all over: even almost 20 years after their discovery, fast radio bursts remain one of the most mysterious phenomena in our Universe. Scientists believe that neutron stars – very small and extremely dense stellar remnants with huge magnetic fields – emit these bursts.

An international team has now used gravitational waves to study a nearby neutron star that has emitted several radio bursts. The researchers analyzed data from the German-British GEO600 detector to learn more about the origin of these events. Their results contribute to a better understanding of these extreme events and their theoretical description.

ℹ️ https://www.geo600.org/219378/understanding-mysterious-magnetars-and-radio-bursts-with-gravitational-waves

📄 https://iopscience.iop.org/article/10.3847/1538-4357/ad8de0 [Open Access]

#Magnetar #FRB #FastRadioBurst #GravitationalWaves #GEO600 #NeutronStar #SGR1935+2154

Date: Thursday 8 August 2024
Time: 13:00
Title: We Need to Talk About Kelvin
Location: Hall 1
Speaker: Professor Martin Hendry

To find this item go to https://guide.glasgow2024.org/ and search for Hendry.

#GravitationalWaves #LordKelvin #Kelvin #GlasgowUniversity #WorldCon #Glasgow2024

How #Smooth is a #NeutronStar? - #SixtySymbols

https://www.youtube.com/watch?v=YfLvuH41sg8&ab_channel=SixtySymbols

#BradyHaran #MikeMerrifield #ProfMikeMerrifield #ProfessorMikeMerrifield #Pulsar #Pulsars #NeutronStars #Gravity #Gravitation #GravitationalWaves #LIGO #UniversityOfNottingham #NottinghamUniversity #Astronomy #Astrophysics #Stars #StellarEvolution