Umut Demirbozan
@udemirbozan.bsky.social
PhD in Observational Cosmology. Interested in data science, AI, wildlife photography and traveling to interesting places. #Istanbul #Barcelona #Earth
Some captions from Stavanger, Norway during late November.
December 3, 2025 at 10:44 PM
Some captions from Stavanger, Norway during late November.
We did a perfect hike to Preikestolen as N Pact School participants. Particle physics, cosmology, and Norwegian fjords intersected in space-time.
December 3, 2025 at 10:42 PM
We did a perfect hike to Preikestolen as N Pact School participants. Particle physics, cosmology, and Norwegian fjords intersected in space-time.
Autumn cycling in Cambridge.
October 29, 2025 at 3:39 PM
Autumn cycling in Cambridge.
I have been invited to a formal
dinner in Cambridge. As a first timer, it was great to dine in Hogwarts style dining rooms.
dinner in Cambridge. As a first timer, it was great to dine in Hogwarts style dining rooms.
October 28, 2025 at 6:23 PM
I have been invited to a formal
dinner in Cambridge. As a first timer, it was great to dine in Hogwarts style dining rooms.
dinner in Cambridge. As a first timer, it was great to dine in Hogwarts style dining rooms.
A fascinating morning talk on the origins of life, lunch with two professors, an inspiring JWST talk this afternoon, and great wine afterwards! 🌌🍷
October 23, 2025 at 6:25 PM
A fascinating morning talk on the origins of life, lunch with two professors, an inspiring JWST talk this afternoon, and great wine afterwards! 🌌🍷
My visit to Cambridge is going quite well beyond my expectations!
October 23, 2025 at 6:18 PM
My visit to Cambridge is going quite well beyond my expectations!
My visit to Cambridge has started! It is going great! Lots of discussions on autonomous scientific discovery!
October 9, 2025 at 8:37 PM
My visit to Cambridge has started! It is going great! Lots of discussions on autonomous scientific discovery!
A great hike along famous Lycian Way in SouthWest Turkey!
September 25, 2025 at 3:57 PM
A great hike along famous Lycian Way in SouthWest Turkey!
Kabak beach, Fethiye, Turkey.
September 22, 2025 at 9:20 AM
Kabak beach, Fethiye, Turkey.
Unusual advantage of being from ‘the Middle East’: you are more likely to be the only author publishing with your last name (as in my case)😆
September 14, 2025 at 10:12 AM
Unusual advantage of being from ‘the Middle East’: you are more likely to be the only author publishing with your last name (as in my case)😆
Everytime I pass through London's King's Cross, I don' forget to checkout this platform. I don't bother to wait in huge line to
my picture taken though:)
my picture taken though:)
September 13, 2025 at 4:18 PM
Everytime I pass through London's King's Cross, I don' forget to checkout this platform. I don't bother to wait in huge line to
my picture taken though:)
my picture taken though:)
A very intense and productive workshop finished. Thanks to AstroDAT team in Durham!
September 13, 2025 at 12:42 PM
A very intense and productive workshop finished. Thanks to AstroDAT team in Durham!
Reposted by Umut Demirbozan
The last 3 years have been the hottest in around 125,000 years.
CO2 levels are their highest in MILLIONS of years.
But most people have no idea this is happening, let alone what it means for our kids’ futures.
Our politics & media have failed our children. We should be furious.
CO2 levels are their highest in MILLIONS of years.
But most people have no idea this is happening, let alone what it means for our kids’ futures.
Our politics & media have failed our children. We should be furious.
August 31, 2025 at 10:18 AM
The last 3 years have been the hottest in around 125,000 years.
CO2 levels are their highest in MILLIONS of years.
But most people have no idea this is happening, let alone what it means for our kids’ futures.
Our politics & media have failed our children. We should be furious.
CO2 levels are their highest in MILLIONS of years.
But most people have no idea this is happening, let alone what it means for our kids’ futures.
Our politics & media have failed our children. We should be furious.
Reposted by Umut Demirbozan
Cosmoverse@Istanbul was such a great conference where I had an opportunity to give a cosmology talk in my home country! More than a month now!
August 9, 2025 at 3:42 PM
Cosmoverse@Istanbul was such a great conference where I had an opportunity to give a cosmology talk in my home country! More than a month now!
This is good to know.
On average, 86% of all named tropical systems in the Atlantic occur after August 2, and the first hurricane doesn't form until August 11.
We have a long season to go. Prepare now – Learn how at weather.gov/safety/hurricane
We have a long season to go. Prepare now – Learn how at weather.gov/safety/hurricane
July 28, 2025 at 6:38 PM
This is good to know.
Reposted by Umut Demirbozan
Smoking increases the risk of death from many causes
July 2, 2025 at 12:17 PM
Smoking increases the risk of death from many causes
Awesome!
Happy 4th! I made a patriotic pie, celebrating America's leadership in space sciences (historically).
July 4, 2025 at 12:52 PM
Awesome!
Reposted by Umut Demirbozan
Perseverance captured a new selfie to celebrate 1500 Sols on Mars.
The rover is currently investigating the outer rim of Jezero crater near an outcrop named Sally's Cove. #planetsci
Full panorama: www.360cities.net/image/persev...
Credit: NASA/JPL-Caltech/MSSS/Steve Albers/Simeon Schmauß
The rover is currently investigating the outer rim of Jezero crater near an outcrop named Sally's Cove. #planetsci
Full panorama: www.360cities.net/image/persev...
Credit: NASA/JPL-Caltech/MSSS/Steve Albers/Simeon Schmauß
May 11, 2025 at 8:53 PM
Perseverance captured a new selfie to celebrate 1500 Sols on Mars.
The rover is currently investigating the outer rim of Jezero crater near an outcrop named Sally's Cove. #planetsci
Full panorama: www.360cities.net/image/persev...
Credit: NASA/JPL-Caltech/MSSS/Steve Albers/Simeon Schmauß
The rover is currently investigating the outer rim of Jezero crater near an outcrop named Sally's Cove. #planetsci
Full panorama: www.360cities.net/image/persev...
Credit: NASA/JPL-Caltech/MSSS/Steve Albers/Simeon Schmauß
Reposted by Umut Demirbozan
Happy 99th birthday to the man who gave voice to the wild. 🎉
Sir David Attenborough, thank you for a lifetime dedicated to the natural world, and for sharing its story with wisdom, wonder, and grace.
You've inspired generations to fall in love with nature.
Sir David Attenborough, thank you for a lifetime dedicated to the natural world, and for sharing its story with wisdom, wonder, and grace.
You've inspired generations to fall in love with nature.
May 8, 2025 at 7:09 AM
Happy 99th birthday to the man who gave voice to the wild. 🎉
Sir David Attenborough, thank you for a lifetime dedicated to the natural world, and for sharing its story with wisdom, wonder, and grace.
You've inspired generations to fall in love with nature.
Sir David Attenborough, thank you for a lifetime dedicated to the natural world, and for sharing its story with wisdom, wonder, and grace.
You've inspired generations to fall in love with nature.
This is the point where science stands in the year 2025.
April 26, 2025 at 11:01 PM
This is the point where science stands in the year 2025.
We have to be critical of almost any high impact claims nowadays.
The evidence for biosignatures on K2-18b is flimsy, at best
Last week, Cambridge scientists announced the discovery of DMS and DMDS on K2-18b: what they call a "surefire biosignature."
Now, cut through the hype and get to the truth.
bigthink.com/starts-with-...
#space #astronomy #science
Last week, Cambridge scientists announced the discovery of DMS and DMDS on K2-18b: what they call a "surefire biosignature."
Now, cut through the hype and get to the truth.
bigthink.com/starts-with-...
#space #astronomy #science
The evidence for biosignatures on K2-18b is flimsy, at best
A Cambridge-based team claims to find molecules on an exoplanet that are only produced by life on Earth. Don't fall for the unfounded hype.
bigthink.com
April 22, 2025 at 5:38 PM
We have to be critical of almost any high impact claims nowadays.
Reposted by Umut Demirbozan
BREAKING from @science.org: The Trump admin is seeking to kill nearly all climate research at NOAA, its climate science agency.
Its near-final budget proposal would end all NOAA research labs, academic institutes, and regional climate centers. And it wants to fully end the NOAA Research division.
Its near-final budget proposal would end all NOAA research labs, academic institutes, and regional climate centers. And it wants to fully end the NOAA Research division.
Trump seeks to end climate research at premier U.S. climate agency
White House aims to end NOAA’s research office; NASA also targeted
www.science.org
April 11, 2025 at 3:20 PM
BREAKING from @science.org: The Trump admin is seeking to kill nearly all climate research at NOAA, its climate science agency.
Its near-final budget proposal would end all NOAA research labs, academic institutes, and regional climate centers. And it wants to fully end the NOAA Research division.
Its near-final budget proposal would end all NOAA research labs, academic institutes, and regional climate centers. And it wants to fully end the NOAA Research division.
Reposted by Umut Demirbozan
Jeremiah Ostriker, Who Plumbed Dark Forces That Shape Universe, Dies at 87
There’s more to the universe than meets the eye, he found. His studies led astronomy to the dark side, changing our view of what’s out there.
✍️ by Dennis Overbye
www.nytimes.com/2025/04/07/s... 🧪 #Cosmology
There’s more to the universe than meets the eye, he found. His studies led astronomy to the dark side, changing our view of what’s out there.
✍️ by Dennis Overbye
www.nytimes.com/2025/04/07/s... 🧪 #Cosmology
Jeremiah Ostriker, Who Plumbed Dark Forces That Shape Universe, Dies at 86
There’s more to the universe than meets the eye, he found. His studies led astronomy to the dark side, changing our view of what’s out there.
www.nytimes.com
April 8, 2025 at 12:09 PM
Jeremiah Ostriker, Who Plumbed Dark Forces That Shape Universe, Dies at 87
There’s more to the universe than meets the eye, he found. His studies led astronomy to the dark side, changing our view of what’s out there.
✍️ by Dennis Overbye
www.nytimes.com/2025/04/07/s... 🧪 #Cosmology
There’s more to the universe than meets the eye, he found. His studies led astronomy to the dark side, changing our view of what’s out there.
✍️ by Dennis Overbye
www.nytimes.com/2025/04/07/s... 🧪 #Cosmology
The best "summary" of our Universe as we know it. Proud to be part of the Cosmoverse initiative! Huge thanks to Eleonora for coordinating this.
#Cosmology
416 pages, 538 authors, 4256 references
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
by Eleonora Di Valentino and co-authors
arxiv.org/abs/2504.01669 🧪
416 pages, 538 authors, 4256 references
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
by Eleonora Di Valentino and co-authors
arxiv.org/abs/2504.01669 🧪
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades. This concordance mod...
arxiv.org
April 7, 2025 at 10:10 PM
The best "summary" of our Universe as we know it. Proud to be part of the Cosmoverse initiative! Huge thanks to Eleonora for coordinating this.