Barry Goldman
@barrygoldman1.bsky.social
was studying origins of life, that got too narrow, now studying #Geology. ... maybe this time i'll regularly post original content, what should i write?
https://blackskimmer.blogspot.com/2018/07/finally-i-can-post-my-science-salon.htm
#Astrobiology
https://blackskimmer.blogspot.com/2018/07/finally-i-can-post-my-science-salon.htm
#Astrobiology
Reposted by Barry Goldman
The rocks you're breaking might be breaking along fractures, cleavage or foliation planes if metamorphic rock, or original layering/bedding planes for sedimentary (or really low grade metamorphic) rocks.
November 20, 2025 at 1:12 AM
The rocks you're breaking might be breaking along fractures, cleavage or foliation planes if metamorphic rock, or original layering/bedding planes for sedimentary (or really low grade metamorphic) rocks.
Reposted by Barry Goldman
And depending on how deep the dike goes, the deeper end might be gabbro: same minerals as basalt but bigger crystals because it cooled more slowly & they had time to grow.
November 20, 2025 at 12:31 AM
And depending on how deep the dike goes, the deeper end might be gabbro: same minerals as basalt but bigger crystals because it cooled more slowly & they had time to grow.
Reposted by Barry Goldman
Gabbro forms for more than about 2 km of overburden pressure (at least going by oceanic crust).
That's within the range that cracks in rock open from decompression (so most basalt won't have had enough overburden to have decompression fractures).
That's within the range that cracks in rock open from decompression (so most basalt won't have had enough overburden to have decompression fractures).
November 20, 2025 at 12:30 AM
Gabbro forms for more than about 2 km of overburden pressure (at least going by oceanic crust).
That's within the range that cracks in rock open from decompression (so most basalt won't have had enough overburden to have decompression fractures).
That's within the range that cracks in rock open from decompression (so most basalt won't have had enough overburden to have decompression fractures).
Reposted by Barry Goldman
Nope, columns form in thick basalt flows as they cool. They're a function of the rock shrinking.
Dikes are usually conduits through which basalt gets to the surface.
Dikes are usually conduits through which basalt gets to the surface.
November 20, 2025 at 12:30 AM
Nope, columns form in thick basalt flows as they cool. They're a function of the rock shrinking.
Dikes are usually conduits through which basalt gets to the surface.
Dikes are usually conduits through which basalt gets to the surface.
Reposted by Barry Goldman
I think that's likely why, fractures need stress concentrated in a narrow area.
Not sure I've seen a test/model of that though....
Not sure I've seen a test/model of that though....
November 20, 2025 at 12:33 AM
I think that's likely why, fractures need stress concentrated in a narrow area.
Not sure I've seen a test/model of that though....
Not sure I've seen a test/model of that though....
Reposted by Barry Goldman
Recent posts have prompted me to think about really basic info related to a field that people outside it have no reason to know.
Like longitude running from 0 to 360 degrees (or 180 if East and West is specified) while latitude only ever goes from 0 to 90.
What are some other examples?
Like longitude running from 0 to 360 degrees (or 180 if East and West is specified) while latitude only ever goes from 0 to 90.
What are some other examples?
November 19, 2025 at 6:29 PM
Recent posts have prompted me to think about really basic info related to a field that people outside it have no reason to know.
Like longitude running from 0 to 360 degrees (or 180 if East and West is specified) while latitude only ever goes from 0 to 90.
What are some other examples?
Like longitude running from 0 to 360 degrees (or 180 if East and West is specified) while latitude only ever goes from 0 to 90.
What are some other examples?
Reposted by Barry Goldman
NASA's newly released images of interstellar Comet 3I/ATLAS come from across the solar system: Mars surface, Mars orbit, and the L1 point. They are dividends from investing in exploration & pushing the bounds of knowledge. 🧪🔭
science.nasa.gov/solar-system...
science.nasa.gov/solar-system...
November 19, 2025 at 9:43 PM
NASA's newly released images of interstellar Comet 3I/ATLAS come from across the solar system: Mars surface, Mars orbit, and the L1 point. They are dividends from investing in exploration & pushing the bounds of knowledge. 🧪🔭
science.nasa.gov/solar-system...
science.nasa.gov/solar-system...
Reposted by Barry Goldman
NASA Shares Interstellar Comet 3I/ATLAS Images
YouTube video by NASA
www.youtube.com
November 19, 2025 at 8:01 PM
Reposted by Barry Goldman
published in 2018 and meanwhile seven years old(!), but still a highlight: wiggling 𝘝𝘪𝘣𝘳𝘪𝘰 𝘤𝘩𝘰𝘭𝘦𝘳𝘢𝘦 competence pilus catching DNA for uptake/transformation. found during the repair of our archive. written by @racheldiner.bsky.social . #MicroSky
Shining a light on Vibrio DNA uptake
by Rachel Diner — Vibrio cholerae is "kind of a big deal" in the bacterial world and a popular topic here on STC. Beyond being the causative agent for the disease cholera, it's a model bacterium f…
smallthingsconsidered.blog
November 19, 2025 at 5:53 PM
published in 2018 and meanwhile seven years old(!), but still a highlight: wiggling 𝘝𝘪𝘣𝘳𝘪𝘰 𝘤𝘩𝘰𝘭𝘦𝘳𝘢𝘦 competence pilus catching DNA for uptake/transformation. found during the repair of our archive. written by @racheldiner.bsky.social . #MicroSky
Reposted by Barry Goldman
This is wonderful, and shows where curiosity can take you and others (including professionals!) even if you're 8 years old. It helps too that the Astronomer Royal is aces.
Enquiry from an 8yo asking what the Fulton Orrery planets were? Apparently the #Kelvingrove museum staff didn't know, so he e-mailed the Astronomer Royal to find out! I also didn’t know, but the AstroSociety of #Glasgow did (after watching an old VHS recording on the topic!) 🔭 #histsci 1/2🧵
November 19, 2025 at 5:12 PM
This is wonderful, and shows where curiosity can take you and others (including professionals!) even if you're 8 years old. It helps too that the Astronomer Royal is aces.
Reposted by Barry Goldman
✨ A study in nature.com from our Faculty at @unikarlova.cuni.cz reveals Solarion arienae, a rare #protist forming a newly identified eukaryotic supersroup Disparia. A unique window into early #eukaryotic cell #evolution. 🌍🔬👏
www.nature.com/articles/s41...
www.nature.com/articles/s41...
November 19, 2025 at 4:03 PM
✨ A study in nature.com from our Faculty at @unikarlova.cuni.cz reveals Solarion arienae, a rare #protist forming a newly identified eukaryotic supersroup Disparia. A unique window into early #eukaryotic cell #evolution. 🌍🔬👏
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Barry Goldman
A couple of really nice stories about the intriguing subsolar mass candidate #S251112cm
www.science.org/content/arti... by Adrian Cho
www.iflscience.com/candidate-gr... by @drcarpineti.bsky.social
A groundbreaking discovery, or just a false alarm? Time (and more analysis) may tell
🔭🧪☄️⚛️
www.science.org/content/arti... by Adrian Cho
www.iflscience.com/candidate-gr... by @drcarpineti.bsky.social
A groundbreaking discovery, or just a false alarm? Time (and more analysis) may tell
🔭🧪☄️⚛️
Curious gravitational wave may be hint at primordial black holes—or just noise
Astronomers approach unusual observation with caution and excitement
www.science.org
November 19, 2025 at 6:58 PM
A couple of really nice stories about the intriguing subsolar mass candidate #S251112cm
www.science.org/content/arti... by Adrian Cho
www.iflscience.com/candidate-gr... by @drcarpineti.bsky.social
A groundbreaking discovery, or just a false alarm? Time (and more analysis) may tell
🔭🧪☄️⚛️
www.science.org/content/arti... by Adrian Cho
www.iflscience.com/candidate-gr... by @drcarpineti.bsky.social
A groundbreaking discovery, or just a false alarm? Time (and more analysis) may tell
🔭🧪☄️⚛️
Reposted by Barry Goldman
@teddykareta.bsky.social "They planned this for 50 years. Those furry things in Star Wars were called ewoks. And now everyone's furry and woke. And woke is ewok spelled backwards."
November 19, 2025 at 7:02 PM
@teddykareta.bsky.social "They planned this for 50 years. Those furry things in Star Wars were called ewoks. And now everyone's furry and woke. And woke is ewok spelled backwards."
Reposted by Barry Goldman
A new mini-documentary by our colleagues at @uofgravity.bsky.social celebrating the 10th anniversary of our first detection and the progress in #GravitationalWave astronomy
youtu.be/SqhFtkQ4f2c
#GW10Years 🔭🧪⚛️🎢
youtu.be/SqhFtkQ4f2c
#GW10Years 🔭🧪⚛️🎢
University of Glasgow celebrates 10th anniversary of first gravitational wave detection
YouTube video by University of Glasgow
youtu.be
September 13, 2025 at 1:18 PM
A new mini-documentary by our colleagues at @uofgravity.bsky.social celebrating the 10th anniversary of our first detection and the progress in #GravitationalWave astronomy
youtu.be/SqhFtkQ4f2c
#GW10Years 🔭🧪⚛️🎢
youtu.be/SqhFtkQ4f2c
#GW10Years 🔭🧪⚛️🎢
Reposted by Barry Goldman
Anyone in the feed fluent in Arabic (literary)? I need a bit of input on a small thing.
November 19, 2025 at 7:06 PM
Anyone in the feed fluent in Arabic (literary)? I need a bit of input on a small thing.
Reposted by Barry Goldman
Fun fact: Apache jumping spiders (Phidippus apacheanus) are completely harmless, but evolved to mimic velvet ants from the genus Dasymutilla so predators wouldn't mess with them.
November 18, 2025 at 8:36 PM
Fun fact: Apache jumping spiders (Phidippus apacheanus) are completely harmless, but evolved to mimic velvet ants from the genus Dasymutilla so predators wouldn't mess with them.
ok once i had to meet a legislator in Albany NY and i get to the state legisltive building and they search my bag and won't let me in with my dinky plastic sopranino recorder, claiming it is a nuisance instrument. they wldnt hold it at th desk either. i had to hide it outside..
They’re going to regulate whistles before guns aren’t they?
November 19, 2025 at 12:37 AM
ok once i had to meet a legislator in Albany NY and i get to the state legisltive building and they search my bag and won't let me in with my dinky plastic sopranino recorder, claiming it is a nuisance instrument. they wldnt hold it at th desk either. i had to hide it outside..
Reposted by Barry Goldman
Astronomers, question! If you have a dedicated astronomy major, what upper level *physics* classes do you require your students to take?
We are getting our Astro major together at Oregon, and while I think a class of classical+E&M, we’re wondering if a class in QM is actually useful 👀
We are getting our Astro major together at Oregon, and while I think a class of classical+E&M, we’re wondering if a class in QM is actually useful 👀
November 18, 2025 at 11:13 PM
Astronomers, question! If you have a dedicated astronomy major, what upper level *physics* classes do you require your students to take?
We are getting our Astro major together at Oregon, and while I think a class of classical+E&M, we’re wondering if a class in QM is actually useful 👀
We are getting our Astro major together at Oregon, and while I think a class of classical+E&M, we’re wondering if a class in QM is actually useful 👀
Reposted by Barry Goldman
Jamaica more or less out of the news entirely just a few weeks after Melissa hit. It shouldn't be.
"Hurricane Melissa changed the life of every Jamaican in less than 24 hours."
"Hurricane Melissa changed the life of every Jamaican in less than 24 hours."
‘This is survival’: Jamaica leads calls from vulnerable nations at Cop30
Countries including Mauritius and Cuba reiterate life-or-death nature of cutting emissions, calling it ‘a moral duty’
www.theguardian.com
November 17, 2025 at 11:01 PM
Jamaica more or less out of the news entirely just a few weeks after Melissa hit. It shouldn't be.
"Hurricane Melissa changed the life of every Jamaican in less than 24 hours."
"Hurricane Melissa changed the life of every Jamaican in less than 24 hours."
Reposted by Barry Goldman
Our work on Naegleria Myosin 2 is out!
Naegleria encodes 3 Myo2s which contract its actin network—the first evidence of contractile Myo2 outside of Amorphea.
Myo2 is actually widespread in Naegleria's relatives and correlates with fast cell crawling.
Read more: www.cell.com/current-biol...
Naegleria encodes 3 Myo2s which contract its actin network—the first evidence of contractile Myo2 outside of Amorphea.
Myo2 is actually widespread in Naegleria's relatives and correlates with fast cell crawling.
Read more: www.cell.com/current-biol...
Myosin 2 drives actin contractility in fast-crawling species outside of the amorphean lineage
Myosin 2-dependent actin contractility—the force that powers cell division and migration
in animals, fungi, and other Amorphea—had been previously unknown outside this single
eukaryotic group. Guest e...
www.cell.com
November 17, 2025 at 5:19 PM
Our work on Naegleria Myosin 2 is out!
Naegleria encodes 3 Myo2s which contract its actin network—the first evidence of contractile Myo2 outside of Amorphea.
Myo2 is actually widespread in Naegleria's relatives and correlates with fast cell crawling.
Read more: www.cell.com/current-biol...
Naegleria encodes 3 Myo2s which contract its actin network—the first evidence of contractile Myo2 outside of Amorphea.
Myo2 is actually widespread in Naegleria's relatives and correlates with fast cell crawling.
Read more: www.cell.com/current-biol...
Reposted by Barry Goldman
Oxychlorine Species On Mars: A Review
astrobiology.com/2025/11/oxyc... #astrobiology #mars #astrogeology
astrobiology.com/2025/11/oxyc... #astrobiology #mars #astrogeology
Oxychlorine Species On Mars: A Review - Astrobiology
Oxychlorine species (mainly perchlorate and chlorate) have been identified at multiple locations on the surface of Mars by both orbiter and in situ rovers.
astrobiology.com
November 17, 2025 at 8:07 PM
Oxychlorine Species On Mars: A Review
astrobiology.com/2025/11/oxyc... #astrobiology #mars #astrogeology
astrobiology.com/2025/11/oxyc... #astrobiology #mars #astrogeology
Reposted by Barry Goldman
Well, here's some very exciting news!
I've been wanting to share this for a few months, but had to wait for the pre-print to drop.
A NEW GLITCH ON A MILLISECOND PULSAR HAS BEEN OBSERVED!
These events are extremely rare - only two others since MSPs discovered.
🔭🧪📡
I've been wanting to share this for a few months, but had to wait for the pre-print to drop.
A NEW GLITCH ON A MILLISECOND PULSAR HAS BEEN OBSERVED!
These events are extremely rare - only two others since MSPs discovered.
🔭🧪📡
For only the third time ever, a glitch event has been observed on a millisecond #pulsar.
@rami.spaceaustralia.com chats with lead author and PhD candidate Bhavnesh Bhat about the significance of this important, yet rare, event.
www.spaceaustralia.com/news/new-gli...
#SpaceAustralia
📸 NASA SVS
@rami.spaceaustralia.com chats with lead author and PhD candidate Bhavnesh Bhat about the significance of this important, yet rare, event.
www.spaceaustralia.com/news/new-gli...
#SpaceAustralia
📸 NASA SVS
November 17, 2025 at 8:05 PM
Well, here's some very exciting news!
I've been wanting to share this for a few months, but had to wait for the pre-print to drop.
A NEW GLITCH ON A MILLISECOND PULSAR HAS BEEN OBSERVED!
These events are extremely rare - only two others since MSPs discovered.
🔭🧪📡
I've been wanting to share this for a few months, but had to wait for the pre-print to drop.
A NEW GLITCH ON A MILLISECOND PULSAR HAS BEEN OBSERVED!
These events are extremely rare - only two others since MSPs discovered.
🔭🧪📡
Reposted by Barry Goldman
I've written a post about a tiny monster, a copepod which is monstrous by name and by nature.
It has no mouth and it must mate. As a juvenile, it lives in the body of a worm, and when it reaches adulthood, it pops out like a tiny xenomorph.
#Invertebrate 🧪
dailyparasite.blogspot.com/2025/11/cymb...
It has no mouth and it must mate. As a juvenile, it lives in the body of a worm, and when it reaches adulthood, it pops out like a tiny xenomorph.
#Invertebrate 🧪
dailyparasite.blogspot.com/2025/11/cymb...
<i>Cymbasoma</i> sp.
Floating amidst the ocean's plankton is a tiny monster, it has no mouth and it must mate, after which it will give birth to a new generation...
dailyparasite.blogspot.com
November 12, 2025 at 12:30 PM
I've written a post about a tiny monster, a copepod which is monstrous by name and by nature.
It has no mouth and it must mate. As a juvenile, it lives in the body of a worm, and when it reaches adulthood, it pops out like a tiny xenomorph.
#Invertebrate 🧪
dailyparasite.blogspot.com/2025/11/cymb...
It has no mouth and it must mate. As a juvenile, it lives in the body of a worm, and when it reaches adulthood, it pops out like a tiny xenomorph.
#Invertebrate 🧪
dailyparasite.blogspot.com/2025/11/cymb...
Reposted by Barry Goldman
The Bruce Museum in Greenwich, CT, has a new exhibit: Ants - Tiny Creatures, Big Lives. We went today, and here are some impressions. It’s not a massive exhibit, but well done and certainly worth checking out if you’re in the area. The exhibit runs through May 17.
November 16, 2025 at 10:31 PM
The Bruce Museum in Greenwich, CT, has a new exhibit: Ants - Tiny Creatures, Big Lives. We went today, and here are some impressions. It’s not a massive exhibit, but well done and certainly worth checking out if you’re in the area. The exhibit runs through May 17.
Reposted by Barry Goldman
The Science Teachers Association of New York State (STANYS), who have had PRI as a long time educational partner (most recently last week for a program "Finding Climate Change Solutions From Across the Sciences") have made a statement of support for saving the Paleontological Research Institution ⚒️
November 16, 2025 at 8:52 PM
The Science Teachers Association of New York State (STANYS), who have had PRI as a long time educational partner (most recently last week for a program "Finding Climate Change Solutions From Across the Sciences") have made a statement of support for saving the Paleontological Research Institution ⚒️