clumsy dog unplugs magnetic trap holding one kilogram antilithium-coated antihydrogen snowball
October 8, 2025 at 9:08 PM
clumsy dog unplugs magnetic trap holding one kilogram antilithium-coated antihydrogen snowball
This day in history. 2010. Scientists trapped 38 antihydrogen atoms in the Large Hadron Collider; also one angry badger.
November 17, 2023 at 10:26 AM
This day in history. 2010. Scientists trapped 38 antihydrogen atoms in the Large Hadron Collider; also one angry badger.
A new measurement has determined, with a precision 100 times better than previous measurements, that the splitting of two “hyperfine” ground states of antihydrogen is the same as that seen in hydrogen. Matter and antimatter continue to look like mirror images of each other.
Antihydrogen Measurement Sharpens Antimatter Symmetry Test
A 100-fold improvement in a key antihydrogen measurement strengthens tests of matter–antimatter symmetry, entering a regime sensitive to the antiproton’s internal structure.
physics.aps.org
June 4, 2026 at 1:01 AM
A new measurement has determined, with a precision 100 times better than previous measurements, that the splitting of two “hyperfine” ground states of antihydrogen is the same as that seen in hydrogen. Matter and antimatter continue to look like mirror images of each other.
Nature research paper: Four ppm measurement of the antihydrogen ground-state hyperfine splitting
go.nature.com/4dRBDQ8
go.nature.com/4dRBDQ8
Four ppm measurement of the antihydrogen ground-state hyperfine splitting - Nature
A measurement of the hyperfine splitting energy of the ground state of antihydrogen at 4 ppm precision reaches a point at which this result is sensitive to the internal structure of the antiproton.
go.nature.com
May 30, 2026 at 2:44 PM
Nature research paper: Four ppm measurement of the antihydrogen ground-state hyperfine splitting
go.nature.com/4dRBDQ8
go.nature.com/4dRBDQ8
Physicists working on the ALPHA experiment at CERN have trapped and accumulated 15,000 antihydrogen atoms in less than 7 h. This accumulation rate is more than 20 times the previous record. 🧪⚛️ ow.ly/iKgP50XvMEC
Sympathetic cooling gives antihydrogen experiment a boost – Physics World
Having more antimatter could help solve profound mysteries of physics
ow.ly
November 21, 2025 at 2:42 PM
Physicists working on the ALPHA experiment at CERN have trapped and accumulated 15,000 antihydrogen atoms in less than 7 h. This accumulation rate is more than 20 times the previous record. 🧪⚛️ ow.ly/iKgP50XvMEC
no way dude imagine showing the aliens our antihydrogen like we're hot shit and they make fun of us for not knowing how to make antihelium
February 19, 2026 at 2:13 AM
no way dude imagine showing the aliens our antihydrogen like we're hot shit and they make fun of us for not knowing how to make antihelium
ALPHA measures tiny energy gap in antimatter with improved precision 💫
The ALPHA Collaboration has increased the precision of its measurement of the ground-state hyperfine splitting of antihydrogen by two orders of magnitude.
Find out more: home.cern/alpha-measur...
The ALPHA Collaboration has increased the precision of its measurement of the ground-state hyperfine splitting of antihydrogen by two orders of magnitude.
Find out more: home.cern/alpha-measur...
May 28, 2026 at 7:46 AM
ALPHA measures tiny energy gap in antimatter with improved precision 💫
The ALPHA Collaboration has increased the precision of its measurement of the ground-state hyperfine splitting of antihydrogen by two orders of magnitude.
Find out more: home.cern/alpha-measur...
The ALPHA Collaboration has increased the precision of its measurement of the ground-state hyperfine splitting of antihydrogen by two orders of magnitude.
Find out more: home.cern/alpha-measur...
girl who needs that much antihydrogen for, y'know, girl stuff. normal girl reasons.
May 20, 2026 at 2:38 PM
girl who needs that much antihydrogen for, y'know, girl stuff. normal girl reasons.
CPT Symmetry remains undefeated: physics.aps.org/articles/v19...
Antihydrogen Measurement Sharpens Antimatter Symmetry Test
A 100-fold improvement in a key antihydrogen measurement strengthens tests of matter–antimatter symmetry, entering a regime sensitive to the antiproton’s internal structure.
physics.aps.org
June 8, 2026 at 9:33 PM
CPT Symmetry remains undefeated: physics.aps.org/articles/v19...
Breakthrough in antimatter production 💫
A new cooling technique means that the ALPHA experiment at CERN’s Antimatter Factory can produce antihydrogen atoms eight times faster than before.
Find out more: home.cern/news/news/ex...
A new cooling technique means that the ALPHA experiment at CERN’s Antimatter Factory can produce antihydrogen atoms eight times faster than before.
Find out more: home.cern/news/news/ex...
November 20, 2025 at 7:16 AM
Breakthrough in antimatter production 💫
A new cooling technique means that the ALPHA experiment at CERN’s Antimatter Factory can produce antihydrogen atoms eight times faster than before.
Find out more: home.cern/news/news/ex...
A new cooling technique means that the ALPHA experiment at CERN’s Antimatter Factory can produce antihydrogen atoms eight times faster than before.
Find out more: home.cern/news/news/ex...
Published open access last week: ⚛️
Spectroscopy of the hyperfine levels of antihydrogen to test the invariance of CPT symmetry.
www.nature.com/articles/s41...
Spectroscopy of the hyperfine levels of antihydrogen to test the invariance of CPT symmetry.
www.nature.com/articles/s41...
Precision spectroscopy of the hyperfine components of the 1S–2S transition in antihydrogen - Nature Physics
The ALPHA Collaboration reports measurements of the hyperfine components of the 1S–2S transition in trapped antihydrogen. They interpret the results as a test of the invariance of charge–parity–time-r...
www.nature.com
January 22, 2025 at 9:17 AM
Published open access last week: ⚛️
Spectroscopy of the hyperfine levels of antihydrogen to test the invariance of CPT symmetry.
www.nature.com/articles/s41...
Spectroscopy of the hyperfine levels of antihydrogen to test the invariance of CPT symmetry.
www.nature.com/articles/s41...
www.nature.com/articles/d41... 92 antiprotons shipped in the back of a box truck! I wonder if we'll see any attempts at larger-scale amat storage using antilithium-coated granules of frozen antihydrogen in future decades - there was an interesting NIAC study about pathways to get there in the 2010s.
Antimatter has been transported for the first time ever — in the back of CERN's truck
Physicists have succeeded for the first time in transporting the most expensive and most volatile substance on Earth — antimatter.
www.nature.com
March 25, 2026 at 3:29 AM
www.nature.com/articles/d41... 92 antiprotons shipped in the back of a box truck! I wonder if we'll see any attempts at larger-scale amat storage using antilithium-coated granules of frozen antihydrogen in future decades - there was an interesting NIAC study about pathways to get there in the 2010s.
“This September, a group of researchers at CERN finally, after years of engineering an extraordinarily precise experiment, managed to create and carefully capture a sample of antihydrogen […] And then they dropped it.”
My latest for BBC Science Focus Magazine:
www.sciencefocus.com/comment/stud...
My latest for BBC Science Focus Magazine:
www.sciencefocus.com/comment/stud...
How new antimatter science could soon explain the existence of everything
From anitmatter to dark matter, the Universe is filled with all sorts of unusual substances. Understanding them could help us to learn more about ourselves.
www.sciencefocus.com
December 5, 2023 at 4:05 PM
“This September, a group of researchers at CERN finally, after years of engineering an extraordinarily precise experiment, managed to create and carefully capture a sample of antihydrogen […] And then they dropped it.”
My latest for BBC Science Focus Magazine:
www.sciencefocus.com/comment/stud...
My latest for BBC Science Focus Magazine:
www.sciencefocus.com/comment/stud...
"no, you dont understand, we're creating antihydrogen molecules and introducing them to their matter counterpart like we're toasting bread. this was unthinkable in the 21st century"
"yeah, and what the fuck do you think we're doing with all of that energy? we're boiling water."
"yeah, and what the fuck do you think we're doing with all of that energy? we're boiling water."
January 5, 2025 at 7:10 PM
"no, you dont understand, we're creating antihydrogen molecules and introducing them to their matter counterpart like we're toasting bread. this was unthinkable in the 21st century"
"yeah, and what the fuck do you think we're doing with all of that energy? we're boiling water."
"yeah, and what the fuck do you think we're doing with all of that energy? we're boiling water."
Laser cooling of antihydrogen atoms:
www.nature.com/articles/s41...
"Doppler cooling" exploits the velocity-dependent absorption of laser frequencies: interacting with one 121.6 nm photon slows down an atom by 3.3 m/s, enough to bring it down to μeV energy levels within a dozen tries.
www.nature.com/articles/s41...
"Doppler cooling" exploits the velocity-dependent absorption of laser frequencies: interacting with one 121.6 nm photon slows down an atom by 3.3 m/s, enough to bring it down to μeV energy levels within a dozen tries.
April 19, 2025 at 12:39 PM
Laser cooling of antihydrogen atoms:
www.nature.com/articles/s41...
"Doppler cooling" exploits the velocity-dependent absorption of laser frequencies: interacting with one 121.6 nm photon slows down an atom by 3.3 m/s, enough to bring it down to μeV energy levels within a dozen tries.
www.nature.com/articles/s41...
"Doppler cooling" exploits the velocity-dependent absorption of laser frequencies: interacting with one 121.6 nm photon slows down an atom by 3.3 m/s, enough to bring it down to μeV energy levels within a dozen tries.
CERN Can Now Produce Antihydrogen Atoms Eight Times Faster Than Before
https://science.slashdot.org/story/25/11/21/066251/cern-can-now-produce-antihydrogen-atoms-eight-times-faster-than-before?utm_source=rss1.0mainlinkanon&utm_medium=feed
CERN Can Now Produce Antihydrogen Atoms Eight Times Faster Than Before
fahrbot-bot shares a report from Phys.org: Physicists from Swansea University have played the leading role in a scientific breakthrough at CERN, developing an innovative technique that increases the antihydrogen trapping rate by a factor of ten. The advancement, achieved as part of the internationa...
science.slashdot.org
November 21, 2025 at 10:12 AM
CERN Can Now Produce Antihydrogen Atoms Eight Times Faster Than Before
https://science.slashdot.org/story/25/11/21/066251/cern-can-now-produce-antihydrogen-atoms-eight-times-faster-than-before?utm_source=rss1.0mainlinkanon&utm_medium=feed
Definitely not me, giving my Delta Green players an *extremely* thin-skinned antimatter suitcase nuke. What’s 2 megatons-TNT of antihydrogen between friends?
August 25, 2026 at 2:13 PM
Definitely not me, giving my Delta Green players an *extremely* thin-skinned antimatter suitcase nuke. What’s 2 megatons-TNT of antihydrogen between friends?
Boosting Antihydrogen Production using Beryllium Ions
Boosting Antihydrogen Production using Beryllium Ions
Antihydrogen forms an ideal study subject for deciphering the secrets of fundamental physics due to it being the most simple anti-matter atom. However, keeping it from casually annihilating itself along …read more
hackaday.com
November 26, 2025 at 3:30 AM
Boosting Antihydrogen Production using Beryllium Ions
Boosting Antihydrogen Production using Beryllium Ions
Boosting Antihydrogen Production using Beryllium Ions
Hackaday Article
hackaday.com
November 26, 2025 at 3:05 AM
Boosting Antihydrogen Production using Beryllium Ions
The ALPHA experiment studies these differences through the spectroscopy of antihydrogen, which requires the use of ultra-precise clocks, such as the recently-installed caesium fountain clock.
Optical fibre link to make CERN more on time than ever
An optical fibre link to the ALPHA experiment at CERN’s Antimatter Factory will assist in precise measurements of the properties of antihydrogen. (Image: CERN) The Standard Model of particle physics i...
home.cern
February 24, 2025 at 11:57 AM
The ALPHA experiment studies these differences through the spectroscopy of antihydrogen, which requires the use of ultra-precise clocks, such as the recently-installed caesium fountain clock.
I have like a fourth grade kind of question 😬 : antimatter/matter annihilation is always seems to be explained in terms of paired particles (proton/antiproton etc) so what happens when an antihydrogen collides with say an atom of sodium?
December 5, 2023 at 5:30 PM
I have like a fourth grade kind of question 😬 : antimatter/matter annihilation is always seems to be explained in terms of paired particles (proton/antiproton etc) so what happens when an antihydrogen collides with say an atom of sodium?
New measurements by @cern.bsky.social's ALPHA collaboration show that antihydrogen's ground-state hyperfine splitting is the same as normal hydrogen's to within four ppm. That's two orders of magnitude more precise than previous experiments. Getting closer...🧪⚛️ physicsworld.com/a/matter-ant...
Matter-antimatter symmetry measurement sets new precision record – Physics World
CERN’s ALPHA collaboration pins down the ground-state hyperfine splitting of antihydrogen within four parts per million
physicsworld.com
July 27, 2026 at 3:31 PM
New measurements by @cern.bsky.social's ALPHA collaboration show that antihydrogen's ground-state hyperfine splitting is the same as normal hydrogen's to within four ppm. That's two orders of magnitude more precise than previous experiments. Getting closer...🧪⚛️ physicsworld.com/a/matter-ant...
Not that I know of but you can do positronium+positronium (kinda like H2) and you can bind positronium to hydrogen or even ionized antihydrogen?? and sometimes to other atoms, it's wild
February 28, 2025 at 6:41 PM
Not that I know of but you can do positronium+positronium (kinda like H2) and you can bind positronium to hydrogen or even ionized antihydrogen?? and sometimes to other atoms, it's wild
Researchers on the AEgIS collaboration at CERN have designed an experiment that could soon boost our understanding of how antimatter falls under gravity. 🧪⚛️ ow.ly/OKgW50VPXcg
Smartphone sensors and antihydrogen could soon put relativity to the test – Physics World
Camera components will improve precision of moiré deflectometer
ow.ly
May 12, 2025 at 8:52 AM
Researchers on the AEgIS collaboration at CERN have designed an experiment that could soon boost our understanding of how antimatter falls under gravity. 🧪⚛️ ow.ly/OKgW50VPXcg