@astromikehudson.bsky.social
This PSA is going out early to prospective students of U Waterloo’s Advanced Computational Physics, Winter 2026 edition.
Dear My Students: I'm begging you to hit "Restart kernel and run all cells" before declaring your code finished.
spongebob squarepants is screaming and asking for a please .
ALT: spongebob squarepants is screaming and asking for a please .
media.tenor.com
September 23, 2025 at 12:43 AM
This PSA is going out early to prospective students of U Waterloo’s Advanced Computational Physics, Winter 2026 edition.
Paper day! Led by Hunter Martin, a PhD student in my group, and using UNIONS weak lensing shapes, we have measured the "anti-lensing" signal from cosmic voids.
There's dark matter in the voids!
arxiv.org/abs/2507.13450
There's dark matter in the voids!
arxiv.org/abs/2507.13450
Lensing without mass: The matter density profile in cosmic voids from UNIONS
We measure the distribution of matter contained within the emptiest regions of the Universe: cosmic voids. We use the large overlap between the Ultraviolet Near-Infrared Optical Northern Survey (UNION...
arxiv.org
July 28, 2025 at 4:14 PM
Paper day! Led by Hunter Martin, a PhD student in my group, and using UNIONS weak lensing shapes, we have measured the "anti-lensing" signal from cosmic voids.
There's dark matter in the voids!
arxiv.org/abs/2507.13450
There's dark matter in the voids!
arxiv.org/abs/2507.13450
I have to admit that I still haven't fully understood how the US budget system works, but this sounds like good news.
The Senate appropriations committee has voiced its intent to ignore the request by President Donald Trump to slash the budgets of the National Science Foundation and NASA science programs. scim.ag/4nW7XWi
Senate spending panel would rescue NSF and NASA science funding
Its support for a flat budget is a sign of congressional resistance to drastic cuts Trump has proposed
scim.ag
July 10, 2025 at 8:50 PM
I have to admit that I still haven't fully understood how the US budget system works, but this sounds like good news.
Reposted
Wishing all of my friends in the United States a happy Independence Day. Only took you 249 years to go back to having a King... 🇺🇸
July 4, 2025 at 12:05 PM
Wishing all of my friends in the United States a happy Independence Day. Only took you 249 years to go back to having a King... 🇺🇸
For those unfamiliar with the Beaverton, think Canadian Onion.
Google and Meta search both report that Cape Breton Island has its own time zone 12 minutes ahead of mainland Nova Scotia time because they are both drawing that information from a Beaverton article I wrote in 2024
June 11, 2025 at 11:56 AM
For those unfamiliar with the Beaverton, think Canadian Onion.
Reposted
Google and Meta search both report that Cape Breton Island has its own time zone 12 minutes ahead of mainland Nova Scotia time because they are both drawing that information from a Beaverton article I wrote in 2024
June 10, 2025 at 12:50 AM
Google and Meta search both report that Cape Breton Island has its own time zone 12 minutes ahead of mainland Nova Scotia time because they are both drawing that information from a Beaverton article I wrote in 2024
Reposted
From my experience, the people most worked up about the prospect of kids using LLMs to write their essays are parents who've spent the past 10 years writing their kids' essays
May 28, 2025 at 1:44 PM
From my experience, the people most worked up about the prospect of kids using LLMs to write their essays are parents who've spent the past 10 years writing their kids' essays
Interviewer: can you explain this gap in your resume?
Astronomer: Orbital resonances
Astronomer: Orbital resonances
Interviewer: can you explain this gap in your resume?
Astronomer: TESS coverage shift.
Astronomer: TESS coverage shift.
Interviewer: Can you explain this gap in your resume?
Astronomer: It’s not truly a gap—rather, dust has obscured our view of that region, but if you would provide me with a very large infrared space telescope, I’ll see what I can do.
Astronomer: It’s not truly a gap—rather, dust has obscured our view of that region, but if you would provide me with a very large infrared space telescope, I’ll see what I can do.
May 14, 2025 at 8:42 PM
Interviewer: can you explain this gap in your resume?
Astronomer: Orbital resonances
Astronomer: Orbital resonances
Reposted
Dear UCL don't do this, allow me to upload a pdf I've already written. All this does is annoy me. #academicsky 🧪
May 9, 2025 at 9:52 AM
Dear UCL don't do this, allow me to upload a pdf I've already written. All this does is annoy me. #academicsky 🧪
Reposted
Good luck today, Canada 🇨🇦 elbows up!
April 28, 2025 at 12:25 PM
Good luck today, Canada 🇨🇦 elbows up!
Reposted
Tomato main sequence 🇳🇿🌱
April 20, 2025 at 2:42 AM
Tomato main sequence 🇳🇿🌱
Reposted
🥳 It's paper day for the completed #ESO Kilo-Degree Survey. We end our journey with a consistent picture of #cosmology 😲
I've been co-leading KiDS for 12yrs & I'm so proud of what the team's achieved. If you're at the #Euclid meet, go to Angus Wright's talk @10am today!🔭
ℹ️: arxiv.org/pdf/2503.19441
I've been co-leading KiDS for 12yrs & I'm so proud of what the team's achieved. If you're at the #Euclid meet, go to Angus Wright's talk @10am today!🔭
ℹ️: arxiv.org/pdf/2503.19441
March 26, 2025 at 8:01 AM
🥳 It's paper day for the completed #ESO Kilo-Degree Survey. We end our journey with a consistent picture of #cosmology 😲
I've been co-leading KiDS for 12yrs & I'm so proud of what the team's achieved. If you're at the #Euclid meet, go to Angus Wright's talk @10am today!🔭
ℹ️: arxiv.org/pdf/2503.19441
I've been co-leading KiDS for 12yrs & I'm so proud of what the team's achieved. If you're at the #Euclid meet, go to Angus Wright's talk @10am today!🔭
ℹ️: arxiv.org/pdf/2503.19441
Reposted
Maria Drout is taking about the CASTOR mission right now at #TFS25, and I just think we should all pause for a second to acknowledge this very astronomical beaver logo 🦫🤩
🔭🧪
🔭🧪
March 13, 2025 at 6:36 PM
Maria Drout is taking about the CASTOR mission right now at #TFS25, and I just think we should all pause for a second to acknowledge this very astronomical beaver logo 🦫🤩
🔭🧪
🔭🧪
Reposted
10% of NASA’s workforce has been laid off—guess that’ll be a boost for SpaceX.
February 18, 2025 at 7:35 PM
10% of NASA’s workforce has been laid off—guess that’ll be a boost for SpaceX.
Reposted
If you're listening out for the winds of resistance, the folks at the Alt National Park Service @altnps.bsky.social are worth following
February 7, 2025 at 11:11 AM
If you're listening out for the winds of resistance, the folks at the Alt National Park Service @altnps.bsky.social are worth following
Double paper day! Isaac Cheng looks at mergers with weak lensing in UNIONS. There are hints of differences with control samples, but at this stage, these aren't statistically significant. Still, extreme starbursts (half of stellar mass formed) in mergers can be excluded. arxiv.org/abs/2502.00584 1/2
arxiv.org
February 4, 2025 at 11:07 AM
Double paper day! Isaac Cheng looks at mergers with weak lensing in UNIONS. There are hints of differences with control samples, but at this stage, these aren't statistically significant. Still, extreme starbursts (half of stellar mass formed) in mergers can be excluded. arxiv.org/abs/2502.00584 1/2
Paper day (last Monday). Led by Amber Hollinger, we quantify the uncertainty in the Riess et al. measurements of H0 that use our 2M++ model. Peculiar velocity corrections do indeed reduce the uncertainty in H0 to 0.3 km/s/Mpc. Looks like the H0 tension remains! arxiv.org/abs/2501.15704
Uncertainties in the Hubble Constant from Peculiar Velocities
Recent measurements of the Hubble constant using type Ia supernovae explicitly correct for their estimated peculiar velocities using the 2M++ reconstruction of the local density field. The amount of u...
arxiv.org
January 31, 2025 at 5:37 AM
Paper day (last Monday). Led by Amber Hollinger, we quantify the uncertainty in the Riess et al. measurements of H0 that use our 2M++ model. Peculiar velocity corrections do indeed reduce the uncertainty in H0 to 0.3 km/s/Mpc. Looks like the H0 tension remains! arxiv.org/abs/2501.15704
Would be surprised if this were not true in Canada as well. Hat tip to @astromikemerri.bsky.social
Numbers of managers in Universities are not just increasing, they are accelerating (gradient is increasing)
Data for Cambridge University (£53m deficit) below
Rampant unchecked growth of management in Unis is much of the deficit, much of the crisis
Data for Cambridge University (£53m deficit) below
Rampant unchecked growth of management in Unis is much of the deficit, much of the crisis
January 31, 2025 at 3:39 AM
Would be surprised if this were not true in Canada as well. Hat tip to @astromikemerri.bsky.social
Reposted
Of all the things Carter did, this was always one of the most fascinating.
At great personal risk, Jimmy Carter helped Canada manage one of the world’s first nuclear accidents at Chalk River in 1952. www.cbc.ca/news/canada/...
How a future U.S. president helped avert nuclear disaster near Canada's capital | CBC News
In 1952, an experimental nuclear reactor in Chalk River, Ont., about 180 kilometres northwest of Ottawa, partially melted down, becoming the world's first nuclear reactor incident. Disaster was averte...
www.cbc.ca
December 29, 2024 at 9:31 PM
Of all the things Carter did, this was always one of the most fascinating.
Reposted
I’m an astronomer. When I give a movie 10h/10, I assume h=0.7. 🔭
I’m a frequentist, when I give a movie 7/10 it means if I watch it 10 times I enjoy 7 of them
i'm a bayesian. when i give a movie a 7/10 it means i'm 70% sure that it's good
December 25, 2024 at 7:30 PM
I’m an astronomer. When I give a movie 10h/10, I assume h=0.7. 🔭
Reposted
It's the weekend, baby
December 13, 2024 at 11:51 PM
It's the weekend, baby
Reposted
Just learned the term “jargon monoxide”. I love it. Should be used more.
November 27, 2024 at 1:36 AM
Just learned the term “jargon monoxide”. I love it. Should be used more.
Reposted
So this AI nonsense showed up in my discovery feed.
A thread on how to avoid AI-generated slop and mislabeled/misattributed/unattributed images and find real space images and astronomy content on Bluesky. 🔭
A thread on how to avoid AI-generated slop and mislabeled/misattributed/unattributed images and find real space images and astronomy content on Bluesky. 🔭
November 25, 2024 at 6:41 PM
So this AI nonsense showed up in my discovery feed.
A thread on how to avoid AI-generated slop and mislabeled/misattributed/unattributed images and find real space images and astronomy content on Bluesky. 🔭
A thread on how to avoid AI-generated slop and mislabeled/misattributed/unattributed images and find real space images and astronomy content on Bluesky. 🔭