Dr. Heloise Stevance
@sydonahi.bsky.social
Astrophysicist - Schmidt A.I. in Science Fellow - Oxford Uni - she/they
Sky surveys
Exploding stars
Hungry black holes
AI Literacy
Beatrice Tinsley Lecturer 2021
Caroline Herschel Prize 2024
hfstevance.com
Sky surveys
Exploding stars
Hungry black holes
AI Literacy
Beatrice Tinsley Lecturer 2021
Caroline Herschel Prize 2024
hfstevance.com
Pinned
Caroline Herschel Prize Lecture - How can AI help us find exploding stars and hungry black holes?
YouTube video by University of Bath
www.youtube.com
Tonight I'm speaking at the Cambridge Astronomical society delivering my Caroline Herschel Prize Talk "How can AI help us find explosive stars and hungry black holes?".
You can watch it online for free as it was recorded by the University of Bath in November!
🔭
www.youtube.com/watch?v=dtCj...
You can watch it online for free as it was recorded by the University of Bath in November!
🔭
www.youtube.com/watch?v=dtCj...
Reposted by Dr. Heloise Stevance
This person is paying OpenAI two hundred dollars a month to have a chatbot gaslight them about making an excel spreadsheet
October 20, 2025 at 2:08 AM
This person is paying OpenAI two hundred dollars a month to have a chatbot gaslight them about making an excel spreadsheet
Reposted by Dr. Heloise Stevance
We are pleased to announce that the Astrophysics Centre for Multimessenger Studies in Europe (ACME) EU-funded project has officially launched its online platform for virtual access to multi-messenger expertise. 🔭🧪⚛️☄️
support.acme-astro.eu
Details in the thread below and on: www.acme-astro.eu
support.acme-astro.eu
Details in the thread below and on: www.acme-astro.eu
ACME VA platform
support.acme-astro.eu
October 10, 2025 at 8:44 PM
We are pleased to announce that the Astrophysics Centre for Multimessenger Studies in Europe (ACME) EU-funded project has officially launched its online platform for virtual access to multi-messenger expertise. 🔭🧪⚛️☄️
support.acme-astro.eu
Details in the thread below and on: www.acme-astro.eu
support.acme-astro.eu
Details in the thread below and on: www.acme-astro.eu
Reposted by Dr. Heloise Stevance
Today is the release day of Gazan physics student Wasim Said's memoir of life under the genocide. 🧪
You should grab a copy. #BookSky
1804books.com/products/wit...
You should grab a copy. #BookSky
1804books.com/products/wit...
Witness to the Hellfire of Genocide
I didn’t write this to make you cry.Not for you to tell me: “Poor you.”I write this so I can hang these words around your neck—to make you bear the responsibility of my perspective,the responsibility ...
1804books.com
October 1, 2025 at 8:03 PM
Today is the release day of Gazan physics student Wasim Said's memoir of life under the genocide. 🧪
You should grab a copy. #BookSky
1804books.com/products/wit...
You should grab a copy. #BookSky
1804books.com/products/wit...
Reposted by Dr. Heloise Stevance
"no evidence supporting a statistically significant trend of [O star] multiplicity properties with metallicity" still high (~70%) in the SMC - interesting! 🔭🧪 #AstroSci #extragalactic
A high fraction of close massive binary stars at low metallicity - Nature Astronomy
The analysis of radial velocity variations of O-type stars in the Small Magellanic Cloud reveals a large fraction of close binaries, suggesting that binary physics also plays a prominent role in the l...
www.nature.com
September 8, 2025 at 7:30 PM
"no evidence supporting a statistically significant trend of [O star] multiplicity properties with metallicity" still high (~70%) in the SMC - interesting! 🔭🧪 #AstroSci #extragalactic
How long do we give the techno-bros to start weaponising DEI by saying their fave AI is conscious and has feelings and saying otherwise is "dehumanizing" and cruel?
September 25, 2025 at 5:20 AM
How long do we give the techno-bros to start weaponising DEI by saying their fave AI is conscious and has feelings and saying otherwise is "dehumanizing" and cruel?
Reposted by Dr. Heloise Stevance
That’s a much better title yeah
My preferred title "Bot does Astronomers' Cosmic Laundry"
But I guess it didn't sound serious enough.
Fun fact the tool still works even though we added a whole new telescope in the stream this summer and without retraining 🤣🫶
www.ox.ac.uk/news/2025-09...
But I guess it didn't sound serious enough.
Fun fact the tool still works even though we added a whole new telescope in the stream this summer and without retraining 🤣🫶
www.ox.ac.uk/news/2025-09...
AI tool developed at Oxford helps astronomers find supernovae in a
A new AI-powered tool has reduced astronomers’ workload by 85% - filtering through thousands of data alerts to identify the few genuine signals caused by supernovae (powerful explosions from dying
www.ox.ac.uk
September 11, 2025 at 11:42 AM
That’s a much better title yeah
My preferred title "Bot does Astronomers' Cosmic Laundry"
But I guess it didn't sound serious enough.
Fun fact the tool still works even though we added a whole new telescope in the stream this summer and without retraining 🤣🫶
www.ox.ac.uk/news/2025-09...
But I guess it didn't sound serious enough.
Fun fact the tool still works even though we added a whole new telescope in the stream this summer and without retraining 🤣🫶
www.ox.ac.uk/news/2025-09...
AI tool developed at Oxford helps astronomers find supernovae in a
A new AI-powered tool has reduced astronomers’ workload by 85% - filtering through thousands of data alerts to identify the few genuine signals caused by supernovae (powerful explosions from dying
www.ox.ac.uk
September 11, 2025 at 10:25 AM
My preferred title "Bot does Astronomers' Cosmic Laundry"
But I guess it didn't sound serious enough.
Fun fact the tool still works even though we added a whole new telescope in the stream this summer and without retraining 🤣🫶
www.ox.ac.uk/news/2025-09...
But I guess it didn't sound serious enough.
Fun fact the tool still works even though we added a whole new telescope in the stream this summer and without retraining 🤣🫶
www.ox.ac.uk/news/2025-09...
"AI-powered" is obviously a marketing term.
My models use a nifty little trick called Histogram Based Gradient Boosted Decision trees.
TL;DR it approximates complex probability distributions by adding loads of small functions (here trees).
Why is it smart if it's so simple?
1/2 #AstroSci
My models use a nifty little trick called Histogram Based Gradient Boosted Decision trees.
TL;DR it approximates complex probability distributions by adding loads of small functions (here trees).
Why is it smart if it's so simple?
1/2 #AstroSci
September 11, 2025 at 6:14 AM
"AI-powered" is obviously a marketing term.
My models use a nifty little trick called Histogram Based Gradient Boosted Decision trees.
TL;DR it approximates complex probability distributions by adding loads of small functions (here trees).
Why is it smart if it's so simple?
1/2 #AstroSci
My models use a nifty little trick called Histogram Based Gradient Boosted Decision trees.
TL;DR it approximates complex probability distributions by adding loads of small functions (here trees).
Why is it smart if it's so simple?
1/2 #AstroSci
Reposted by Dr. Heloise Stevance
September 10, 2025 at 9:13 AM
Reposted by Dr. Heloise Stevance
For the last two years, I've been paying for the Astronomy feeds hosting myself.
It has been a privilege to grow our community here, but I also shouldn't keep doing it for free 😅
That's why I'm delighted to announce that we now have a donations page on Open Collective! 🔭☄️ #astrophotography
It has been a privilege to grow our community here, but I also shouldn't keep doing it for free 😅
That's why I'm delighted to announce that we now have a donations page on Open Collective! 🔭☄️ #astrophotography
The Astrosky Ecosystem - Open Collective
We're building an open-source ecosystem of social media tools for the space science & astronomy communities.
opencollective.com
September 8, 2025 at 3:51 PM
For the last two years, I've been paying for the Astronomy feeds hosting myself.
It has been a privilege to grow our community here, but I also shouldn't keep doing it for free 😅
That's why I'm delighted to announce that we now have a donations page on Open Collective! 🔭☄️ #astrophotography
It has been a privilege to grow our community here, but I also shouldn't keep doing it for free 😅
That's why I'm delighted to announce that we now have a donations page on Open Collective! 🔭☄️ #astrophotography
Reposted by Dr. Heloise Stevance
New from Wynn Jacobson-Galán ! it’s so cool to see such an expansive spectral energy distribution (SED) of such an extraordinary event.
arxiv.org/abs/2508.11747
🧪🔭☄️
arxiv.org/abs/2508.11747
🧪🔭☄️
August 19, 2025 at 7:07 AM
New from Wynn Jacobson-Galán ! it’s so cool to see such an expansive spectral energy distribution (SED) of such an extraordinary event.
arxiv.org/abs/2508.11747
🧪🔭☄️
arxiv.org/abs/2508.11747
🧪🔭☄️
Reposted by Dr. Heloise Stevance
Well... the discussion around 3I/ATLAS continues to... evolve. This object is super exciting, fascinating, worthy of a LOT of study and press! ALSO so far as I have seen, & from every solar system expert I've talked to (and I know a lot of 'em!), it looks like a comet, not a spaceship.
🔭🧪☄️
🔭🧪☄️
August 15, 2025 at 1:16 AM
Well... the discussion around 3I/ATLAS continues to... evolve. This object is super exciting, fascinating, worthy of a LOT of study and press! ALSO so far as I have seen, & from every solar system expert I've talked to (and I know a lot of 'em!), it looks like a comet, not a spaceship.
🔭🧪☄️
🔭🧪☄️
August 11, 2025 at 8:59 AM
Reposted by Dr. Heloise Stevance
PS if you’re a member of the press: I and my colleagues will happily talk about 3I/ATLAS until the (interstellar) cows come home. But my only comment on whether it’s an alien spacecraft is: Avi is talking nonsense on stilts, and doesn’t understand comets.
August 8, 2025 at 6:09 AM
PS if you’re a member of the press: I and my colleagues will happily talk about 3I/ATLAS until the (interstellar) cows come home. But my only comment on whether it’s an alien spacecraft is: Avi is talking nonsense on stilts, and doesn’t understand comets.
Reposted by Dr. Heloise Stevance
I see the first articles in the UK press giving space to the claim that 3I/ATLAS is an alien spacecraft. Briefly:
It’s a comet that formed billions of years ago, passing through our Solar System.
It’s behaving like a comet.
There is no evidence it’s artificial.
It’s a comet that formed billions of years ago, passing through our Solar System.
It’s behaving like a comet.
There is no evidence it’s artificial.
August 8, 2025 at 6:00 AM
I see the first articles in the UK press giving space to the claim that 3I/ATLAS is an alien spacecraft. Briefly:
It’s a comet that formed billions of years ago, passing through our Solar System.
It’s behaving like a comet.
There is no evidence it’s artificial.
It’s a comet that formed billions of years ago, passing through our Solar System.
It’s behaving like a comet.
There is no evidence it’s artificial.
Hey bluesky! Please help me reach the right scientists 🧪
The moon **sidereal** period is ~27 days and menstruation is ~27 to 28 days on average.
I am wondering if it is due to an evolutionary advantage in early humans with calendars being able to predict period and do family planning
1/
The moon **sidereal** period is ~27 days and menstruation is ~27 to 28 days on average.
I am wondering if it is due to an evolutionary advantage in early humans with calendars being able to predict period and do family planning
1/
August 10, 2025 at 8:20 AM
Hey bluesky! Please help me reach the right scientists 🧪
The moon **sidereal** period is ~27 days and menstruation is ~27 to 28 days on average.
I am wondering if it is due to an evolutionary advantage in early humans with calendars being able to predict period and do family planning
1/
The moon **sidereal** period is ~27 days and menstruation is ~27 to 28 days on average.
I am wondering if it is due to an evolutionary advantage in early humans with calendars being able to predict period and do family planning
1/
Reposted by Dr. Heloise Stevance
The University of Warwick has paid a lot of money, I'm guessing, for their internet banner ads on the Guardian and elsewhere.
But they can't spell "curiosity". This isn't a US-UK variant. They just, genuinely, have a massive spelling error in their banner ads.
But they can't spell "curiosity". This isn't a US-UK variant. They just, genuinely, have a massive spelling error in their banner ads.
August 8, 2025 at 8:22 AM
The University of Warwick has paid a lot of money, I'm guessing, for their internet banner ads on the Guardian and elsewhere.
But they can't spell "curiosity". This isn't a US-UK variant. They just, genuinely, have a massive spelling error in their banner ads.
But they can't spell "curiosity". This isn't a US-UK variant. They just, genuinely, have a massive spelling error in their banner ads.
Reposted by Dr. Heloise Stevance
I did the thing that took 20 minutes and I've been putting off for 6 years!
August 9, 2025 at 10:02 AM
I did the thing that took 20 minutes and I've been putting off for 6 years!
Paper on the ATLAS Virtual Research Assistant is still in press (but fully accepted) so I'm holding off on further bragging for a little bit, but in the mean time the Schmidt AI in Science folks at Oxford did a quick profile on me
Let's be nosy about the Universe!
saiis.web.ox.ac.uk/article/a-st...
Let's be nosy about the Universe!
saiis.web.ox.ac.uk/article/a-st...
A stellar performance – Dr Heloise Stevance is going supernova in her field of exploding stars
saiis.web.ox.ac.uk
August 8, 2025 at 2:00 PM
Paper on the ATLAS Virtual Research Assistant is still in press (but fully accepted) so I'm holding off on further bragging for a little bit, but in the mean time the Schmidt AI in Science folks at Oxford did a quick profile on me
Let's be nosy about the Universe!
saiis.web.ox.ac.uk/article/a-st...
Let's be nosy about the Universe!
saiis.web.ox.ac.uk/article/a-st...
Reposted by Dr. Heloise Stevance
Very promising news on the next seven-year EU budget, with a proposed substantial increase for Horizon Europe including the ERC.
We are analysing the other parts of this proposal in more detail.
@Vonderleyen @EZaharievaEU
research-and-innovation.ec.europa.eu/news/all-res...
We are analysing the other parts of this proposal in more detail.
@Vonderleyen @EZaharievaEU
research-and-innovation.ec.europa.eu/news/all-res...
Horizon Europe 2028 - 2034: twice bigger, simpler, faster and more impactful
Research and innovation news alert: As part of the next long-term EU budget 2028-2034, the Commission is proposing to double the budget of the research and innovation framework programme to €175 billi...
research-and-innovation.ec.europa.eu
July 23, 2025 at 7:49 PM
Very promising news on the next seven-year EU budget, with a proposed substantial increase for Horizon Europe including the ERC.
We are analysing the other parts of this proposal in more detail.
@Vonderleyen @EZaharievaEU
research-and-innovation.ec.europa.eu/news/all-res...
We are analysing the other parts of this proposal in more detail.
@Vonderleyen @EZaharievaEU
research-and-innovation.ec.europa.eu/news/all-res...
Reposted by Dr. Heloise Stevance
🚀 A new version of Astro-COLIBRI is live! 🔭
Easier searches, photometry filters, host galaxy classifications, and much more. ☄️🧪⚛️
Check out all the updates here 👉 forum.astro-colibri.science/t/new-releas...
Easier searches, photometry filters, host galaxy classifications, and much more. ☄️🧪⚛️
Check out all the updates here 👉 forum.astro-colibri.science/t/new-releas...
New release: Astro-COLIBRI v2.23.0
🚀 New Astro-COLIBRI Update – What’s New? This is a big one! Several major developments came to a successful conclusion at the same time and are thus released together. Here’s a summary of the new fea...
forum.astro-colibri.science
July 8, 2025 at 3:25 PM
🚀 A new version of Astro-COLIBRI is live! 🔭
Easier searches, photometry filters, host galaxy classifications, and much more. ☄️🧪⚛️
Check out all the updates here 👉 forum.astro-colibri.science/t/new-releas...
Easier searches, photometry filters, host galaxy classifications, and much more. ☄️🧪⚛️
Check out all the updates here 👉 forum.astro-colibri.science/t/new-releas...
Reposted by Dr. Heloise Stevance
Someone take up this very generous offer! I also recommend checking out the resources from the OpEd Project if you want to learn to write opinion: www.theopedproject.org
July 6, 2025 at 6:08 PM
Someone take up this very generous offer! I also recommend checking out the resources from the OpEd Project if you want to learn to write opinion: www.theopedproject.org
They used 304 case studies from a medical journal.
1) doctors don't diagnose through case studies.
2) if it's in case studies it's in the corpus. AI is an excellent parrot. It cannot be left alone to make decisions, no matter how much you wish it to happen to create more shareholder value
1) doctors don't diagnose through case studies.
2) if it's in case studies it's in the corpus. AI is an excellent parrot. It cannot be left alone to make decisions, no matter how much you wish it to happen to create more shareholder value
Microsoft poached several top Google researchers to help build a powerful AI tool that it says can diagnose patients four times more accurately than human doctors—and potentially cut health care costs.
Microsoft Says Its New AI System Diagnosed Patients 4 Times More Accurately Than Human Doctors
The tech giant poached several top Google researchers to help build a powerful AI tool that can diagnose patients and potentially cut health care costs.
wrd.cm
July 5, 2025 at 3:10 PM
They used 304 case studies from a medical journal.
1) doctors don't diagnose through case studies.
2) if it's in case studies it's in the corpus. AI is an excellent parrot. It cannot be left alone to make decisions, no matter how much you wish it to happen to create more shareholder value
1) doctors don't diagnose through case studies.
2) if it's in case studies it's in the corpus. AI is an excellent parrot. It cannot be left alone to make decisions, no matter how much you wish it to happen to create more shareholder value
Let's be very explicit - this is the direct result of Israel blocking aid.
This is an instrument of genocide.
Killing children isn't collateral damage. It's the goal.
This is an instrument of genocide.
Killing children isn't collateral damage. It's the goal.
‘They’re skin and bones’: doctors in Gaza warn babies at risk of death from lack of formula
‘They’re skin and bones’: doctors in Gaza warn babies at risk of death from lack of formula
Doctors say Israel is blocking deliveries of formula urgently needed as mothers are either dead or too malnourished to feed their babies
Doctors in Gaza have warned that hundreds of babies are at risk of death amid a critical shortage of baby milk, as Israel continues to restrict the humanitarian aid that can enter the beleaguered strip.
Dr Ahmad al-Farra, the head of paediatrics at Nasser hospital in Khan Younis, said his ward had only about a week’s worth of infant formula remaining. The doctor has already run out of specialised formula meant for premature babies and is forced to use regular formula, rationing it between the infants under his care. Continue reading...
www.theguardian.com
July 5, 2025 at 8:12 AM
Let's be very explicit - this is the direct result of Israel blocking aid.
This is an instrument of genocide.
Killing children isn't collateral damage. It's the goal.
This is an instrument of genocide.
Killing children isn't collateral damage. It's the goal.