Paul Halpern
@phalpern.bsky.social
Physicist and Science Writer. Author of eighteen books, most recently The Allure of the Multiverse: Extra Dimensions, Other Worlds, and Parallel Universes
Pinned
Paul Halpern
@phalpern.bsky.social
· Nov 12
The Allure of the Multiverse
Expand your mind with a fantastic voyage into the strange history of parallel universes, higher dimensions, and time travel—from mystic musings to quantum conjectures and hidden realms beyond cosmic frontiers
www.amazon.com/Allure-Multi...
Expand your mind with a fantastic voyage into the strange history of parallel universes, higher dimensions, and time travel—from mystic musings to quantum conjectures and hidden realms beyond cosmic frontiers
www.amazon.com/Allure-Multi...
Reposted by Paul Halpern
The Allure of the Multiverse
Expand your mind with a fantastic voyage into the strange history of parallel universes, higher dimensions, and time travel—from mystic musings to quantum conjectures and hidden realms beyond cosmic frontiers
www.amazon.com/Allure-Multi...
Expand your mind with a fantastic voyage into the strange history of parallel universes, higher dimensions, and time travel—from mystic musings to quantum conjectures and hidden realms beyond cosmic frontiers
www.amazon.com/Allure-Multi...
November 12, 2024 at 5:51 PM
The Allure of the Multiverse
Expand your mind with a fantastic voyage into the strange history of parallel universes, higher dimensions, and time travel—from mystic musings to quantum conjectures and hidden realms beyond cosmic frontiers
www.amazon.com/Allure-Multi...
Expand your mind with a fantastic voyage into the strange history of parallel universes, higher dimensions, and time travel—from mystic musings to quantum conjectures and hidden realms beyond cosmic frontiers
www.amazon.com/Allure-Multi...
Reposted by Paul Halpern
'The existence and validity of human rights are not written in the stars..
A large part of history is therefore replete with the struggle for those rights.. in which a final victory can never be won.
But to tire in that struggle would mean the ruin of society'
-Albert Einstein
#Einstein #Science
A large part of history is therefore replete with the struggle for those rights.. in which a final victory can never be won.
But to tire in that struggle would mean the ruin of society'
-Albert Einstein
#Einstein #Science
October 13, 2025 at 2:14 PM
Reposted by Paul Halpern
'I rarely think in words at all. A thought comes, and I may try to express it in words afterwards.'
-Albert Einstein
(From a conversation with psychologist Max Wertheimer in 1916)
#Einstein #science #physics #ScienceSky
-Albert Einstein
(From a conversation with psychologist Max Wertheimer in 1916)
#Einstein #science #physics #ScienceSky
June 5, 2025 at 1:49 PM
'I rarely think in words at all. A thought comes, and I may try to express it in words afterwards.'
-Albert Einstein
(From a conversation with psychologist Max Wertheimer in 1916)
#Einstein #science #physics #ScienceSky
-Albert Einstein
(From a conversation with psychologist Max Wertheimer in 1916)
#Einstein #science #physics #ScienceSky
Reposted by Paul Halpern
#MathSky #physics #astronomy It's great to find #scicomm specialist Paul Halpern on Bluesky! There are lots of good #scicomm accounts around, but Paul excels at being a storyteller. His books are fascinating, whether you are a STEM nerd or a nonscientist just looking for cocktail party topics.
Explore the history of one of the most provocative ideas in culture and controversial notions in theoretical physics, from Marvel movies and Rick and Morty to bubble universes and quantum weirdness.
Preorder your copy of The Allure of the Multiverse now:
www.amazon.com/Allure-Multi...
Preorder your copy of The Allure of the Multiverse now:
www.amazon.com/Allure-Multi...
November 2, 2023 at 2:31 PM
#MathSky #physics #astronomy It's great to find #scicomm specialist Paul Halpern on Bluesky! There are lots of good #scicomm accounts around, but Paul excels at being a storyteller. His books are fascinating, whether you are a STEM nerd or a nonscientist just looking for cocktail party topics.
Reposted by Paul Halpern
Ambivalent worlds:
John Wheeler’s hesitant parentage of the multiverse
By Paul Halpern
ilnuovosaggiatore.sif.it/article/383
#histstm #physics #science #sciencehistory
John Wheeler’s hesitant parentage of the multiverse
By Paul Halpern
ilnuovosaggiatore.sif.it/article/383
#histstm #physics #science #sciencehistory
December 21, 2024 at 8:53 PM
Ambivalent worlds:
John Wheeler’s hesitant parentage of the multiverse
By Paul Halpern
ilnuovosaggiatore.sif.it/article/383
#histstm #physics #science #sciencehistory
John Wheeler’s hesitant parentage of the multiverse
By Paul Halpern
ilnuovosaggiatore.sif.it/article/383
#histstm #physics #science #sciencehistory
Reposted by Paul Halpern
From the “Praise For Synchronicity” page of the book “Synchronicty” by Paul Halpern, PHD.
April 14, 2025 at 1:52 PM
From the “Praise For Synchronicity” page of the book “Synchronicty” by Paul Halpern, PHD.
Reposted by Paul Halpern
#RecommendedReading: “The Allure Of The Multiverse – Extra Dimensions, Other Worlds, and Parallel Universes” by Paul Halpern
August 18, 2025 at 8:46 PM
#RecommendedReading: “The Allure Of The Multiverse – Extra Dimensions, Other Worlds, and Parallel Universes” by Paul Halpern
Reposted by Paul Halpern
Reposted by Paul Halpern
"What's the multiverse?" Physicist Paul Halpern answers that question and explains why the far-out subject is so mesmerizing for scientists in the latest episode of the Fiction Science podcast. cosmiclog.com/2024/01/15/s...
Why scientists are mesmerized by the multiverse
The multiverse may be a cool (and convenient) concept for comic books and superhero movies, but why do scientists take it seriously? In a new book titled “The Allure of the Multiverse,”…
cosmiclog.com
January 15, 2024 at 5:41 PM
"What's the multiverse?" Physicist Paul Halpern answers that question and explains why the far-out subject is so mesmerizing for scientists in the latest episode of the Fiction Science podcast. cosmiclog.com/2024/01/15/s...
Reposted by Paul Halpern
Richard Feynman dressed as a Ladakhi monk, painted by Pasadena artist Sylvia Posner. The 'lightning bolt' he is clutching in his right hand resembles one of his scientific diagrams.
More about the costume parties Feynman attended: medium.com/starts-with-... #Feynman #Halloween #science #physics
More about the costume parties Feynman attended: medium.com/starts-with-... #Feynman #Halloween #science #physics
October 25, 2025 at 4:05 PM
Richard Feynman dressed as a Ladakhi monk, painted by Pasadena artist Sylvia Posner. The 'lightning bolt' he is clutching in his right hand resembles one of his scientific diagrams.
More about the costume parties Feynman attended: medium.com/starts-with-... #Feynman #Halloween #science #physics
More about the costume parties Feynman attended: medium.com/starts-with-... #Feynman #Halloween #science #physics
Reposted by Paul Halpern
Albert Einstein never worked in the Manhattan Project to create a nuclear weapon.
However, he did offer scientific advice to the U.S. Navy during World War II.
Here's an image of Einstein discussing his defense research with naval officers in 1943.
#Einstein #science #ScienceSky
However, he did offer scientific advice to the U.S. Navy during World War II.
Here's an image of Einstein discussing his defense research with naval officers in 1943.
#Einstein #science #ScienceSky
November 3, 2025 at 12:01 PM
Albert Einstein never worked in the Manhattan Project to create a nuclear weapon.
However, he did offer scientific advice to the U.S. Navy during World War II.
Here's an image of Einstein discussing his defense research with naval officers in 1943.
#Einstein #science #ScienceSky
However, he did offer scientific advice to the U.S. Navy during World War II.
Here's an image of Einstein discussing his defense research with naval officers in 1943.
#Einstein #science #ScienceSky
Reposted by Paul Halpern
Billionaires rapidly increase their wealth in the United States while poverty rises and life expectancy lowers. Meanwhile, military spending skyrockets, the federal deficit balloons, but relief for hunger is in limbo. Truly appalling:
www.theguardian.com/us-news/2025...
@marcuschown.bsky.social
www.theguardian.com/us-news/2025...
@marcuschown.bsky.social
Top 10 US billionaires’ collective wealth grew by $698bn in past year – report
Oxfam warns Trump policies risk driving inequality to new heights – but Democrats have also exacerbated wealth gap
www.theguardian.com
November 3, 2025 at 11:52 AM
Billionaires rapidly increase their wealth in the United States while poverty rises and life expectancy lowers. Meanwhile, military spending skyrockets, the federal deficit balloons, but relief for hunger is in limbo. Truly appalling:
www.theguardian.com/us-news/2025...
@marcuschown.bsky.social
www.theguardian.com/us-news/2025...
@marcuschown.bsky.social
'A wonder of this kind I experienced as a child of four or five years when my father showed me a compass. That this needle behaved in such a determined way did not at all fit [my preconceptions] ... This experience made a deep and lasting impression upon me.'
-Albert Einstein
#Einstein #Science
-Albert Einstein
#Einstein #Science
November 3, 2025 at 12:06 PM
Albert Einstein never worked in the Manhattan Project to create a nuclear weapon.
However, he did offer scientific advice to the U.S. Navy during World War II.
Here's an image of Einstein discussing his defense research with naval officers in 1943.
#Einstein #science #ScienceSky
However, he did offer scientific advice to the U.S. Navy during World War II.
Here's an image of Einstein discussing his defense research with naval officers in 1943.
#Einstein #science #ScienceSky
November 3, 2025 at 12:01 PM
Albert Einstein never worked in the Manhattan Project to create a nuclear weapon.
However, he did offer scientific advice to the U.S. Navy during World War II.
Here's an image of Einstein discussing his defense research with naval officers in 1943.
#Einstein #science #ScienceSky
However, he did offer scientific advice to the U.S. Navy during World War II.
Here's an image of Einstein discussing his defense research with naval officers in 1943.
#Einstein #science #ScienceSky
Reposted by Paul Halpern
The 400 richest Americans are now worth a record $6.6 trillion.
The entire bottom 50% of America is worth just $4.2 trillion.
Read that back.
When 400 people control more wealth than half a country’s population, we have a very serious problem.
The entire bottom 50% of America is worth just $4.2 trillion.
Read that back.
When 400 people control more wealth than half a country’s population, we have a very serious problem.
November 3, 2025 at 1:30 AM
The 400 richest Americans are now worth a record $6.6 trillion.
The entire bottom 50% of America is worth just $4.2 trillion.
Read that back.
When 400 people control more wealth than half a country’s population, we have a very serious problem.
The entire bottom 50% of America is worth just $4.2 trillion.
Read that back.
When 400 people control more wealth than half a country’s population, we have a very serious problem.
Billionaires rapidly increase their wealth in the United States while poverty rises and life expectancy lowers. Meanwhile, military spending skyrockets, the federal deficit balloons, but relief for hunger is in limbo. Truly appalling:
www.theguardian.com/us-news/2025...
@marcuschown.bsky.social
www.theguardian.com/us-news/2025...
@marcuschown.bsky.social
Top 10 US billionaires’ collective wealth grew by $698bn in past year – report
Oxfam warns Trump policies risk driving inequality to new heights – but Democrats have also exacerbated wealth gap
www.theguardian.com
November 3, 2025 at 11:52 AM
Billionaires rapidly increase their wealth in the United States while poverty rises and life expectancy lowers. Meanwhile, military spending skyrockets, the federal deficit balloons, but relief for hunger is in limbo. Truly appalling:
www.theguardian.com/us-news/2025...
@marcuschown.bsky.social
www.theguardian.com/us-news/2025...
@marcuschown.bsky.social
Reposted by Paul Halpern
SPOOKY QUANTUM PHYSICS! 🎃👻
'I cannot seriously believe in [quantum mechanics] because the theory cannot be reconciled with the idea that physics should represent a reality in space and time, free from spooky actions at a distance.'
-Albert Einstein to Max Born
March 3, 1947
#Halloween2025
'I cannot seriously believe in [quantum mechanics] because the theory cannot be reconciled with the idea that physics should represent a reality in space and time, free from spooky actions at a distance.'
-Albert Einstein to Max Born
March 3, 1947
#Halloween2025
October 7, 2025 at 12:09 AM
SPOOKY QUANTUM PHYSICS! 🎃👻
'I cannot seriously believe in [quantum mechanics] because the theory cannot be reconciled with the idea that physics should represent a reality in space and time, free from spooky actions at a distance.'
-Albert Einstein to Max Born
March 3, 1947
#Halloween2025
'I cannot seriously believe in [quantum mechanics] because the theory cannot be reconciled with the idea that physics should represent a reality in space and time, free from spooky actions at a distance.'
-Albert Einstein to Max Born
March 3, 1947
#Halloween2025
Reposted by Paul Halpern
Albert Einstein moved to the United States on October 17, 1933.
Two weeks later was Halloween.
When a group of girl trick-or-treaters knocked on his door that evening, Einstein came to the front porch and played the violin for them:
capitalcentury.com/1933.html
#HappyHalloween2025 #ScienceSky
Two weeks later was Halloween.
When a group of girl trick-or-treaters knocked on his door that evening, Einstein came to the front porch and played the violin for them:
capitalcentury.com/1933.html
#HappyHalloween2025 #ScienceSky
October 7, 2025 at 12:10 AM
Albert Einstein moved to the United States on October 17, 1933.
Two weeks later was Halloween.
When a group of girl trick-or-treaters knocked on his door that evening, Einstein came to the front porch and played the violin for them:
capitalcentury.com/1933.html
#HappyHalloween2025 #ScienceSky
Two weeks later was Halloween.
When a group of girl trick-or-treaters knocked on his door that evening, Einstein came to the front porch and played the violin for them:
capitalcentury.com/1933.html
#HappyHalloween2025 #ScienceSky
Reposted by Paul Halpern
Need a great costume idea this Halloween? Dress up as your favorite Feynman diagram!
symmetrymagazine.org/article/octo...
#HalloweenScience #happyhalloween2025 #Science #ScienceSky #Physics
symmetrymagazine.org/article/octo...
#HalloweenScience #happyhalloween2025 #Science #ScienceSky #Physics
October 13, 2025 at 2:11 PM
Need a great costume idea this Halloween? Dress up as your favorite Feynman diagram!
symmetrymagazine.org/article/octo...
#HalloweenScience #happyhalloween2025 #Science #ScienceSky #Physics
symmetrymagazine.org/article/octo...
#HalloweenScience #happyhalloween2025 #Science #ScienceSky #Physics
Reposted by Paul Halpern
Thinking about what to wear for Halloween?
Nuclear shell model pioneer Maria Goeppert Mayer, the second woman to receive a Nobel Prize in Physics, shows off her wonderful bat costume
(AIP ESVA)
#Science #ScienceSky #Physics #Halloween #HappyHalloween
Nuclear shell model pioneer Maria Goeppert Mayer, the second woman to receive a Nobel Prize in Physics, shows off her wonderful bat costume
(AIP ESVA)
#Science #ScienceSky #Physics #Halloween #HappyHalloween
October 13, 2025 at 2:08 PM
Thinking about what to wear for Halloween?
Nuclear shell model pioneer Maria Goeppert Mayer, the second woman to receive a Nobel Prize in Physics, shows off her wonderful bat costume
(AIP ESVA)
#Science #ScienceSky #Physics #Halloween #HappyHalloween
Nuclear shell model pioneer Maria Goeppert Mayer, the second woman to receive a Nobel Prize in Physics, shows off her wonderful bat costume
(AIP ESVA)
#Science #ScienceSky #Physics #Halloween #HappyHalloween
Richard Feynman dressed as a Ladakhi monk, painted by Pasadena artist Sylvia Posner. The 'lightning bolt' he is clutching in his right hand resembles one of his scientific diagrams.
More about the costume parties Feynman attended: medium.com/starts-with-... #Feynman #Halloween #science #physics
More about the costume parties Feynman attended: medium.com/starts-with-... #Feynman #Halloween #science #physics
October 25, 2025 at 4:05 PM
Richard Feynman dressed as a Ladakhi monk, painted by Pasadena artist Sylvia Posner. The 'lightning bolt' he is clutching in his right hand resembles one of his scientific diagrams.
More about the costume parties Feynman attended: medium.com/starts-with-... #Feynman #Halloween #science #physics
More about the costume parties Feynman attended: medium.com/starts-with-... #Feynman #Halloween #science #physics
Reposted by Paul Halpern
International Einstein:
Four places where the brilliant physicist lived throughout his life:
Zürich (as a student attending the ETH)
Bern (as a patent officer)
Berlin (as a professor; original building was destroyed)
Princeton (in his later years)
All photos by Paul Halpern
#Einstein
Four places where the brilliant physicist lived throughout his life:
Zürich (as a student attending the ETH)
Bern (as a patent officer)
Berlin (as a professor; original building was destroyed)
Princeton (in his later years)
All photos by Paul Halpern
#Einstein
September 11, 2025 at 12:38 AM
International Einstein:
Four places where the brilliant physicist lived throughout his life:
Zürich (as a student attending the ETH)
Bern (as a patent officer)
Berlin (as a professor; original building was destroyed)
Princeton (in his later years)
All photos by Paul Halpern
#Einstein
Four places where the brilliant physicist lived throughout his life:
Zürich (as a student attending the ETH)
Bern (as a patent officer)
Berlin (as a professor; original building was destroyed)
Princeton (in his later years)
All photos by Paul Halpern
#Einstein
Reposted by Paul Halpern
Thank you, Paul.
Many congratulations Marcus! And on a different note, thanks for your ongoing advocacy for democracy, access to health care for all, and human rights in general.
October 23, 2025 at 6:44 AM
Thank you, Paul.
Reposted by Paul Halpern
Poe understood the expanding Universe and was at the beginning of science fiction.
Edgar Allan Poe’s Eureka and the Big Bang | by Paul Halpern | Starts With A Bang! | Medium share.google/wnme0ptUSb7t...
Edgar Allan Poe’s Eureka and the Big Bang | by Paul Halpern | Starts With A Bang! | Medium share.google/wnme0ptUSb7t...
Edgar Allan Poe’s Eureka and the Big Bang
Did the 19th century master of the macabre predict our cosmic history?
share.google
August 2, 2025 at 2:48 PM
Poe understood the expanding Universe and was at the beginning of science fiction.
Edgar Allan Poe’s Eureka and the Big Bang | by Paul Halpern | Starts With A Bang! | Medium share.google/wnme0ptUSb7t...
Edgar Allan Poe’s Eureka and the Big Bang | by Paul Halpern | Starts With A Bang! | Medium share.google/wnme0ptUSb7t...
Reposted by Paul Halpern
BREAKING: Our crowd count estimate from the No Kings coalition responsible for planning today’s event is 7 MILLION nationwide.
7 MILLION of you gathered across the country to peacefully protest today.
2 million more than the first No Kings action in June.
7 MILLION of you gathered across the country to peacefully protest today.
2 million more than the first No Kings action in June.
It's official. Nearly 7 million people. Today is the single largest day of protest in American history. Americans from all corners of the country are standing up and saying #NoKings. This is what peaceful, patriotic protest looks like.
October 18, 2025 at 9:38 PM
BREAKING: Our crowd count estimate from the No Kings coalition responsible for planning today’s event is 7 MILLION nationwide.
7 MILLION of you gathered across the country to peacefully protest today.
2 million more than the first No Kings action in June.
7 MILLION of you gathered across the country to peacefully protest today.
2 million more than the first No Kings action in June.