David Parkinson
@drdrparky.bsky.social
Travelling, and occasionally researching, astrophysicist
My bluesky algorithm is having fun!
June 15, 2025 at 12:53 AM
My bluesky algorithm is having fun!
We finally got this paper out! Great work by Benedict, Kushal and the others, and also by the whole Dark Energy Spectroscopic Instrument collaboration arxiv.org/abs/2505.16153
Model-Independent Measurement of the Matter-Radiation Equality Scale in DESI 2024
The peak of the matter power spectrum, known as the turnover (TO) scale, is determined by the horizon size at the time of matter-radiation equality. This scale can serve as a standard ruler, independe...
arxiv.org
May 24, 2025 at 12:00 AM
We finally got this paper out! Great work by Benedict, Kushal and the others, and also by the whole Dark Energy Spectroscopic Instrument collaboration arxiv.org/abs/2505.16153
Reposted by David Parkinson
Korea Herald: “The People Power Party announced around 5:50 a.m. that Han was the only person who registered during the party's candidate registration process, which was open from 3 a.m. to 4 a.m.”
Ummm…
Ummm…
May 9, 2025 at 11:52 PM
Korea Herald: “The People Power Party announced around 5:50 a.m. that Han was the only person who registered during the party's candidate registration process, which was open from 3 a.m. to 4 a.m.”
Ummm…
Ummm…
Reposted by David Parkinson
1/ The US government has ordered the Swedish city of Stockholm to end its diversity, inclusivity and equality (DEI) programmes within 10 days. The city authorities say the demand is "bizarre" and they won't be complying. ⬇️
May 7, 2025 at 11:56 AM
1/ The US government has ordered the Swedish city of Stockholm to end its diversity, inclusivity and equality (DEI) programmes within 10 days. The city authorities say the demand is "bizarre" and they won't be complying. ⬇️
The reveal cinematic short for the video game Marathon is the most visually thrilling piece of art I have seen in a long time! youtu.be/fvbEnWLRo1s?...
Marathon | Reveal Cinematic Short
YouTube video by Marathon
youtu.be
April 13, 2025 at 12:53 AM
The reveal cinematic short for the video game Marathon is the most visually thrilling piece of art I have seen in a long time! youtu.be/fvbEnWLRo1s?...
Reposted by David Parkinson
Getting word that this seal is joining the China/Japan/South Korea alliance
Searching Getty Images for photos from the Heard and McDonald Islands...
April 3, 2025 at 4:13 AM
Getting word that this seal is joining the China/Japan/South Korea alliance
This story is a wild ride! www.theguardian.com/global/ng-in...
They wanted to save us from a dark AI future. Then six people were killed
How a group of Silicon Valley math prodigies, AI researchers and internet burnouts descended into an alleged violent cult
www.theguardian.com
March 14, 2025 at 1:48 AM
This story is a wild ride! www.theguardian.com/global/ng-in...
Reposted by David Parkinson
Whenever you welcome guests, treat them with kindness, grace and respect. Simple as that.
February 28, 2025 at 7:36 PM
Whenever you welcome guests, treat them with kindness, grace and respect. Simple as that.
Leaving this here for no particular reason en.wikipedia.org/wiki/Molotov...
Molotov–Ribbentrop Pact - Wikipedia
en.wikipedia.org
February 28, 2025 at 5:25 AM
Leaving this here for no particular reason en.wikipedia.org/wiki/Molotov...
Reposted by David Parkinson
It’s like a modern Molotov-Ribbentrop Pact, with Lavrov as Molotov, Rubio as Ribbentrop, and Ukraine in Poland’s place
February 22, 2025 at 12:21 PM
It’s like a modern Molotov-Ribbentrop Pact, with Lavrov as Molotov, Rubio as Ribbentrop, and Ukraine in Poland’s place
Birthday cake, courtesy of Sungsimdang bakery ko.wikipedia.org/wiki/%EC%84%...
February 24, 2025 at 6:52 AM
Birthday cake, courtesy of Sungsimdang bakery ko.wikipedia.org/wiki/%EC%84%...
Reposted by David Parkinson
I made this Pride flag using only NASA images and our team thought it would be cool to share on social (I work on the NASA heliophysics communications team), but it's getting all sorts of hate on the bird app and Fbook. Thought y'all might be more appreciative of it here. ☺️🏳️🌈💖
June 14, 2024 at 2:19 AM
I made this Pride flag using only NASA images and our team thought it would be cool to share on social (I work on the NASA heliophysics communications team), but it's getting all sorts of hate on the bird app and Fbook. Thought y'all might be more appreciative of it here. ☺️🏳️🌈💖
Reposted by David Parkinson
The Democrats on the House Science Committee have set up a website to collect stories from fired federal employees, anonymously if desired democrats-science.house.gov/sciencefirings
Were you fired by President Trump? | House Committee on Science, Space and Technology
The House Committee on Science, Space and Technology
democrats-science.house.gov
February 18, 2025 at 11:09 PM
The Democrats on the House Science Committee have set up a website to collect stories from fired federal employees, anonymously if desired democrats-science.house.gov/sciencefirings
F***. This. S***. gizmodo.com/edits-to-ver...
Edits to Vera Rubin’s Biography Downplay the Need for Women in Science Amid Federal DEI Crackdown
To comply with Trump's executive order about DEI, a federally funded telescope project has altered the biography of its namesake astronomer.
gizmodo.com
February 14, 2025 at 2:50 AM
F***. This. S***. gizmodo.com/edits-to-ver...
Reposted by David Parkinson
Extraordinary footage of a rocket launch in the Democratic Republic of Congo (then Zaire) in 1979. I wonder what are the archaeological remains of this launch range? 🧪🏺
The Site of the world's first Private Space Program was in the Central African Republic of Zaire!
YouTube video by DEEP SPACE TV
www.youtube.com
February 6, 2025 at 2:16 AM
Extraordinary footage of a rocket launch in the Democratic Republic of Congo (then Zaire) in 1979. I wonder what are the archaeological remains of this launch range? 🧪🏺
Some great work by Corentin and others in the French group in combining cosmological density and velocity fields to measure how large-scale structures grow arxiv.org/abs/2501.16852
Generalized framework for likelihood-based field-level inference of growth rate from velocity and density fields
Measuring the growth rate of large-scale structures ($f$) as a function of redshift has the potential to break degeneracies between modified gravity and dark energy models, when combined with expansio...
arxiv.org
January 30, 2025 at 6:35 AM
Some great work by Corentin and others in the French group in combining cosmological density and velocity fields to measure how large-scale structures grow arxiv.org/abs/2501.16852
Thanks to Jaewon for inviting me to her first light party for her new telescope, the K-ELT (Korean Extremely Little Telescope). It was a lot of fun!
January 26, 2025 at 12:58 AM
Thanks to Jaewon for inviting me to her first light party for her new telescope, the K-ELT (Korean Extremely Little Telescope). It was a lot of fun!
Reposted by David Parkinson
Acting President Choi appoints two judges to the Constitutional Court. Another spot remains open but this likely clears the path to confirming Yoon’s impeachment and turns down the tensions between the govt and opposition controlled National Assembly.
m-en.yna.co.kr/view/AEN2024...
m-en.yna.co.kr/view/AEN2024...
(URGENT) Acting President Choi appoints 2 justices to Constitutional Court | Yonhap News Agency
m-en.yna.co.kr
December 31, 2024 at 8:02 AM
Acting President Choi appoints two judges to the Constitutional Court. Another spot remains open but this likely clears the path to confirming Yoon’s impeachment and turns down the tensions between the govt and opposition controlled National Assembly.
m-en.yna.co.kr/view/AEN2024...
m-en.yna.co.kr/view/AEN2024...
Reposted by David Parkinson
Wi-Fi (provides benefits to billions of people) ... came from radio astronomers looking for tiny black holes
PCR tests (helped billions during the pandemic) ... came from studying extremophile bacterium in hot springs
and now this 👇👇👇
You never know what science research will give our future!
PCR tests (helped billions during the pandemic) ... came from studying extremophile bacterium in hot springs
and now this 👇👇👇
You never know what science research will give our future!
People sometimes make fun of science that sounds stupid and random.
Meanwhile, a study of lizard saliva turned into a peptide medication, which was turned into a diabetes medication, which was turned into a GLP1 weight loss drug, that just became the first therapy every approved for … sleep apnea
Meanwhile, a study of lizard saliva turned into a peptide medication, which was turned into a diabetes medication, which was turned into a GLP1 weight loss drug, that just became the first therapy every approved for … sleep apnea
Breaking News: The FDA approved use of the weight loss drug Zepbound for a common form of sleep apnea. It is the first drug authorized to treat the disorder.
December 21, 2024 at 11:48 PM
Wi-Fi (provides benefits to billions of people) ... came from radio astronomers looking for tiny black holes
PCR tests (helped billions during the pandemic) ... came from studying extremophile bacterium in hot springs
and now this 👇👇👇
You never know what science research will give our future!
PCR tests (helped billions during the pandemic) ... came from studying extremophile bacterium in hot springs
and now this 👇👇👇
You never know what science research will give our future!
Email today: "We would like to inform you that the colloquium scheduled for today with Dr. **** from **** has been canceled due to the recent martial law (which is canceled) and other unforeseen circumstances related to the speaker."
December 4, 2024 at 1:36 AM
Email today: "We would like to inform you that the colloquium scheduled for today with Dr. **** from **** has been canceled due to the recent martial law (which is canceled) and other unforeseen circumstances related to the speaker."
There are quite a few postdoc openings at KASI, including with my colleague in the cosmology group Arman Shafieloo, who is hiring two postdocs www.kasi.re.kr/eng/recruit/...
채용공고 | KASI
www.kasi.re.kr
November 26, 2024 at 1:08 AM
There are quite a few postdoc openings at KASI, including with my colleague in the cosmology group Arman Shafieloo, who is hiring two postdocs www.kasi.re.kr/eng/recruit/...
"We rarely perceive the world at its finest grain, in all of its fluctuating detail... We see, instead, averages: not everything that happens in a single patch, but a coarse-grained summary of it, a blurring of details as if the lens was smeared with vaseline." arxiv.org/abs/1712.03113
Origin Gaps and the Eternal Sunshine of the Second-Order Pendulum
The rich experiences of an intentional, goal-oriented life emerge, in an unpredictable fashion, from the basic laws of physics. Here I argue that this unpredictability is no mirage: there are true gap...
arxiv.org
November 23, 2024 at 1:14 AM
"We rarely perceive the world at its finest grain, in all of its fluctuating detail... We see, instead, averages: not everything that happens in a single patch, but a coarse-grained summary of it, a blurring of details as if the lens was smeared with vaseline." arxiv.org/abs/1712.03113