Why is there no such thing as antigravity?
#AskEthan
In our Universe, everything that we know of experiences the influence of gravity.
But if there are antiparticles, why isn't there any antigravity?
bigthink.com/starts-with-...
#space #gravity #physics #astro
#AskEthan
In our Universe, everything that we know of experiences the influence of gravity.
But if there are antiparticles, why isn't there any antigravity?
bigthink.com/starts-with-...
#space #gravity #physics #astro
Ask Ethan: Why is there no such thing as antigravity?
In General Relativity, the matter and energy curve spacetime, which we experience as gravity. Why can't there be an "antigravity" force?
bigthink.com
January 2, 2026 at 6:32 PM
What is the role of fate in contemporary life
Academically it spills through in the rejection of Great Man and the embrace of tidal history.
Suffered a major setback in the physics poisoned 20th century.
Somewhat irrepressible in the pop Astro culture, there is the need for that flavor of sense
Academically it spills through in the rejection of Great Man and the embrace of tidal history.
Suffered a major setback in the physics poisoned 20th century.
Somewhat irrepressible in the pop Astro culture, there is the need for that flavor of sense
January 2, 2026 at 3:57 PM
What is the role of fate in contemporary life
Academically it spills through in the rejection of Great Man and the embrace of tidal history.
Suffered a major setback in the physics poisoned 20th century.
Somewhat irrepressible in the pop Astro culture, there is the need for that flavor of sense
Academically it spills through in the rejection of Great Man and the embrace of tidal history.
Suffered a major setback in the physics poisoned 20th century.
Somewhat irrepressible in the pop Astro culture, there is the need for that flavor of sense
Follow me if you would like to follow someone who posts a lot of fun pictures and videos full of inspiration, humour and fun. Good political content but not obsession drive you crazy nothing but politics.
Reiki
Witchcraft
Buddhism
Taoism
Tai chi
BMX
Skateboarding
Art
Astro Physics
Poetry
Actual tea
Reiki
Witchcraft
Buddhism
Taoism
Tai chi
BMX
Skateboarding
Art
Astro Physics
Poetry
Actual tea
December 31, 2025 at 2:24 PM
Follow me if you would like to follow someone who posts a lot of fun pictures and videos full of inspiration, humour and fun. Good political content but not obsession drive you crazy nothing but politics.
Reiki
Witchcraft
Buddhism
Taoism
Tai chi
BMX
Skateboarding
Art
Astro Physics
Poetry
Actual tea
Reiki
Witchcraft
Buddhism
Taoism
Tai chi
BMX
Skateboarding
Art
Astro Physics
Poetry
Actual tea
Prove Einstein’s relativity for yourself for under $100
Einstein's relativity has been misunderstood by more people than almost any correct physical theory ever.
Here's how you can prove it for yourself, DIY-style, for cheap.
bigthink.com/starts-with-...
#physics #space #astro
Einstein's relativity has been misunderstood by more people than almost any correct physical theory ever.
Here's how you can prove it for yourself, DIY-style, for cheap.
bigthink.com/starts-with-...
#physics #space #astro
Prove Einstein's relativity for yourself for under $100
Particles are everywhere, including particles from space that stream through the human body. Here's how they prove Einstein's relativity.
bigthink.com
December 30, 2025 at 4:55 PM
Prove Einstein’s relativity for yourself for under $100
Einstein's relativity has been misunderstood by more people than almost any correct physical theory ever.
Here's how you can prove it for yourself, DIY-style, for cheap.
bigthink.com/starts-with-...
#physics #space #astro
Einstein's relativity has been misunderstood by more people than almost any correct physical theory ever.
Here's how you can prove it for yourself, DIY-style, for cheap.
bigthink.com/starts-with-...
#physics #space #astro
Game #5: Astro Robo Sasa
Price: $6.81 (Total $23.34)
This is a unique physics/gravity based action puzzler where the goal is to collect all the energy capsules in each stage. You move by firing your gun and the recoil pushes you in the opposite direction.
Price: $6.81 (Total $23.34)
This is a unique physics/gravity based action puzzler where the goal is to collect all the energy capsules in each stage. You move by firing your gun and the recoil pushes you in the opposite direction.
December 30, 2025 at 4:45 PM
Game #5: Astro Robo Sasa
Price: $6.81 (Total $23.34)
This is a unique physics/gravity based action puzzler where the goal is to collect all the energy capsules in each stage. You move by firing your gun and the recoil pushes you in the opposite direction.
Price: $6.81 (Total $23.34)
This is a unique physics/gravity based action puzzler where the goal is to collect all the energy capsules in each stage. You move by firing your gun and the recoil pushes you in the opposite direction.
Playing Astro Bot and this is the most next gen thing I’ve seen.
If you’re very serious game is so modern and high tech… where’s all the cool physics stuff that Astro Bod does, huh?
Then again. I see Blinx The Time Sweeper and the wet bricks in Perfect Dark Zero as previous next gen tech indicators
If you’re very serious game is so modern and high tech… where’s all the cool physics stuff that Astro Bod does, huh?
Then again. I see Blinx The Time Sweeper and the wet bricks in Perfect Dark Zero as previous next gen tech indicators
December 29, 2025 at 3:11 PM
Playing Astro Bot and this is the most next gen thing I’ve seen.
If you’re very serious game is so modern and high tech… where’s all the cool physics stuff that Astro Bod does, huh?
Then again. I see Blinx The Time Sweeper and the wet bricks in Perfect Dark Zero as previous next gen tech indicators
If you’re very serious game is so modern and high tech… where’s all the cool physics stuff that Astro Bod does, huh?
Then again. I see Blinx The Time Sweeper and the wet bricks in Perfect Dark Zero as previous next gen tech indicators
Stellarvue 152mm refractor, Astro-Physics Mach2 tracking mount, Nikon D810A camera.
December 28, 2025 at 6:40 PM
Stellarvue 152mm refractor, Astro-Physics Mach2 tracking mount, Nikon D810A camera.
They're told they have zero chance of doing serious mathematics the way they're going about it, and their attitude is total indignation they're not even being given a chance. I can only imagine what it's like on the quantum theory and astro physics subs.
December 28, 2025 at 8:40 AM
They're told they have zero chance of doing serious mathematics the way they're going about it, and their attitude is total indignation they're not even being given a chance. I can only imagine what it's like on the quantum theory and astro physics subs.
Either Luffy or Astro Boy.
Astro Boy feels like one of the greats akin to Mickey or Bugs, but Luffy also got them whacky cartoon physics like Bugs Bunny.
Astro Boy feels like one of the greats akin to Mickey or Bugs, but Luffy also got them whacky cartoon physics like Bugs Bunny.
December 27, 2025 at 3:41 PM
Either Luffy or Astro Boy.
Astro Boy feels like one of the greats akin to Mickey or Bugs, but Luffy also got them whacky cartoon physics like Bugs Bunny.
Astro Boy feels like one of the greats akin to Mickey or Bugs, but Luffy also got them whacky cartoon physics like Bugs Bunny.
Jupiter with GRS, Io, & Dual Moon Shadows (Io and Europa)
@celestronuniverse.bsky.social EdgeHD 8 4064 mm
Astro Physics BARADV
Player One Mars 662M
Optolong LRGB Filters
Astroasis Oasis
LRGB 35% of 32,000 frames
Captured with SharpCap
#Jupiter #PlanetaryImaging #Astrophotography #Io #GreatRedSpot
@celestronuniverse.bsky.social EdgeHD 8 4064 mm
Astro Physics BARADV
Player One Mars 662M
Optolong LRGB Filters
Astroasis Oasis
LRGB 35% of 32,000 frames
Captured with SharpCap
#Jupiter #PlanetaryImaging #Astrophotography #Io #GreatRedSpot
December 25, 2025 at 4:34 AM
Jupiter with GRS, Io, & Dual Moon Shadows (Io and Europa)
@celestronuniverse.bsky.social EdgeHD 8 4064 mm
Astro Physics BARADV
Player One Mars 662M
Optolong LRGB Filters
Astroasis Oasis
LRGB 35% of 32,000 frames
Captured with SharpCap
#Jupiter #PlanetaryImaging #Astrophotography #Io #GreatRedSpot
@celestronuniverse.bsky.social EdgeHD 8 4064 mm
Astro Physics BARADV
Player One Mars 662M
Optolong LRGB Filters
Astroasis Oasis
LRGB 35% of 32,000 frames
Captured with SharpCap
#Jupiter #PlanetaryImaging #Astrophotography #Io #GreatRedSpot
You have a PhD in astro physics. You’re already a huge winner.
December 24, 2025 at 12:31 AM
You have a PhD in astro physics. You’re already a huge winner.
The simplest explanation for ultra-high-energy cosmic rays
The highest-energy cosmic rays are too high in energy.... for bare protons.
But if they're actually heavier ions instead, the simplest explanation is just plain iron-ic.
bigthink.com/starts-with-...
#space #cosmicrays #astro #physics
The highest-energy cosmic rays are too high in energy.... for bare protons.
But if they're actually heavier ions instead, the simplest explanation is just plain iron-ic.
bigthink.com/starts-with-...
#space #cosmicrays #astro #physics
The simplest explanation for ultra-high-energy cosmic rays
The highest-energy particles could be a sign of new, unexpected physics. But the simplest, most mundane explanation is particularly iron-ic.
bigthink.com
December 23, 2025 at 5:18 PM
The simplest explanation for ultra-high-energy cosmic rays
The highest-energy cosmic rays are too high in energy.... for bare protons.
But if they're actually heavier ions instead, the simplest explanation is just plain iron-ic.
bigthink.com/starts-with-...
#space #cosmicrays #astro #physics
The highest-energy cosmic rays are too high in energy.... for bare protons.
But if they're actually heavier ions instead, the simplest explanation is just plain iron-ic.
bigthink.com/starts-with-...
#space #cosmicrays #astro #physics
Solar Wind or Solar Rain? New Discovery Challenges Space Physics
Learn More: t.co/c7RtE5XNkL
#space #astronomy #NASA #science #solarsystem #astro #nature #mars #esa #spacex #planets #spaceexploration
Learn More: t.co/c7RtE5XNkL
#space #astronomy #NASA #science #solarsystem #astro #nature #mars #esa #spacex #planets #spaceexploration
https://astronex.net/solar-wind-or-solar-rain-new-discovery-challenges-space-physics/
t.co
December 21, 2025 at 8:11 PM
Solar Wind or Solar Rain? New Discovery Challenges Space Physics
Learn More: t.co/c7RtE5XNkL
#space #astronomy #NASA #science #solarsystem #astro #nature #mars #esa #spacex #planets #spaceexploration
Learn More: t.co/c7RtE5XNkL
#space #astronomy #NASA #science #solarsystem #astro #nature #mars #esa #spacex #planets #spaceexploration
Yup, there's nothing like seeing students consistently turn in wrong answers in astro and physics to make me have zero confidence in anything currently being marketed to us as trustworthy.
suspect a big reason why many academics and others who work in areas where getting facts RIGHT is key are disinterested in using LLMs for research:
they’ve tried it, they keep noticing major errors in output, and they conclude that having to verify all that doesn’t actually save them time.
they’ve tried it, they keep noticing major errors in output, and they conclude that having to verify all that doesn’t actually save them time.
December 21, 2025 at 7:39 PM
Yup, there's nothing like seeing students consistently turn in wrong answers in astro and physics to make me have zero confidence in anything currently being marketed to us as trustworthy.
Universitat Hamburg is hiring:
Research Associate for the Project “Cluster of Excellence Quantum Universe” Machine Learning in Astro- or Particle Physics (PhD candidate)
Research Associate for the Project “Cluster of Excellence Quantum Universe” Machine Learning in Astro- or Particle Physics (PhD candidate)
December 21, 2025 at 11:58 AM
(Astro)physicists do have a strong record of opening up new fields _where nobody else knows anything yet either_ - physics mental habits can be powerful. They have an equally strong record of doing stupid things through failure to recognize that other people do know things in established fields.
December 18, 2025 at 3:23 PM
(Astro)physicists do have a strong record of opening up new fields _where nobody else knows anything yet either_ - physics mental habits can be powerful. They have an equally strong record of doing stupid things through failure to recognize that other people do know things in established fields.
As 2025 ends, the Standard Model still hasn’t cracked
Here in 2025, many challenges have arisen to both Standard Models: particle physics and cosmology.
As the year end, there's barely a crack in either.
bigthink.com/starts-with-...
#space #astro #physics
Here in 2025, many challenges have arisen to both Standard Models: particle physics and cosmology.
As the year end, there's barely a crack in either.
bigthink.com/starts-with-...
#space #astro #physics
As 2025 ends, the Standard Model still hasn't cracked
Our Standard Model of the Universe, for both particle physics and cosmology, remains intact for now. When will its foundations crack?
bigthink.com
December 16, 2025 at 5:01 PM
As 2025 ends, the Standard Model still hasn’t cracked
Here in 2025, many challenges have arisen to both Standard Models: particle physics and cosmology.
As the year end, there's barely a crack in either.
bigthink.com/starts-with-...
#space #astro #physics
Here in 2025, many challenges have arisen to both Standard Models: particle physics and cosmology.
As the year end, there's barely a crack in either.
bigthink.com/starts-with-...
#space #astro #physics
Ah, maybe it depends on topic/institution. Mine was astro and a 50/50 split, though several of the women were motivated by spiting the teachers who’d told them Physics wasn’t for girls…
December 15, 2025 at 2:43 PM
Ah, maybe it depends on topic/institution. Mine was astro and a 50/50 split, though several of the women were motivated by spiting the teachers who’d told them Physics wasn’t for girls…
📢Check out job opportunities!
• Black Hills State University: tenure-track Asst Prof in Physics: shorturl.at/igoUX
• UC Riverside: tenure-track Asst Prof (experimental neutrinos/particle astro/cosmology/GW): shorturl.at/1cU4Y
#PhysicsJobs
@blackhillsstate.bsky.social @ucriverside.bsky.social
• Black Hills State University: tenure-track Asst Prof in Physics: shorturl.at/igoUX
• UC Riverside: tenure-track Asst Prof (experimental neutrinos/particle astro/cosmology/GW): shorturl.at/1cU4Y
#PhysicsJobs
@blackhillsstate.bsky.social @ucriverside.bsky.social
December 15, 2025 at 10:37 AM
📢Check out job opportunities!
• Black Hills State University: tenure-track Asst Prof in Physics: shorturl.at/igoUX
• UC Riverside: tenure-track Asst Prof (experimental neutrinos/particle astro/cosmology/GW): shorturl.at/1cU4Y
#PhysicsJobs
@blackhillsstate.bsky.social @ucriverside.bsky.social
• Black Hills State University: tenure-track Asst Prof in Physics: shorturl.at/igoUX
• UC Riverside: tenure-track Asst Prof (experimental neutrinos/particle astro/cosmology/GW): shorturl.at/1cU4Y
#PhysicsJobs
@blackhillsstate.bsky.social @ucriverside.bsky.social
How do LLMs/chatbots impact students and cheating?
#AskEthan
Across all educational levels, students are outsourcing their assignments to LLMs like ChatGPT.
Except for the ones who care about growing their own minds, they're unlikely to stop.
bigthink.com/starts-with-...
#astro #physics #ed
#AskEthan
Across all educational levels, students are outsourcing their assignments to LLMs like ChatGPT.
Except for the ones who care about growing their own minds, they're unlikely to stop.
bigthink.com/starts-with-...
#astro #physics #ed
Ask Ethan: How do LLMs/chatbots impact students and cheating?
As technology advances, more opportunities for cheating arise. AI/LLMs aren't posing a new problem; they're how students cheat themselves.
bigthink.com
December 12, 2025 at 5:20 PM
How do LLMs/chatbots impact students and cheating?
#AskEthan
Across all educational levels, students are outsourcing their assignments to LLMs like ChatGPT.
Except for the ones who care about growing their own minds, they're unlikely to stop.
bigthink.com/starts-with-...
#astro #physics #ed
#AskEthan
Across all educational levels, students are outsourcing their assignments to LLMs like ChatGPT.
Except for the ones who care about growing their own minds, they're unlikely to stop.
bigthink.com/starts-with-...
#astro #physics #ed
mailchi.mp/6cdf6378d6ea... Our last monthly update for 2025!
It has been an exceptionally challenging year for so many people, including those working on our program to improve physics and astro environments so everyone can thrive. But we are still doing the work and will be in 2026.
It has been an exceptionally challenging year for so many people, including those working on our program to improve physics and astro environments so everyone can thrive. But we are still doing the work and will be in 2026.
December 2025 P/A SEA Change
mailchi.mp
December 11, 2025 at 4:45 PM
mailchi.mp/6cdf6378d6ea... Our last monthly update for 2025!
It has been an exceptionally challenging year for so many people, including those working on our program to improve physics and astro environments so everyone can thrive. But we are still doing the work and will be in 2026.
It has been an exceptionally challenging year for so many people, including those working on our program to improve physics and astro environments so everyone can thrive. But we are still doing the work and will be in 2026.
I feel like that is basically an objectively untrue statement nowhat you believe. The Gospels disagree with each other (as we would suspect if they were genuine accounts by people), there are two creation narratives, quantum and Astro physics are incompatible etc.
December 11, 2025 at 12:56 PM
I feel like that is basically an objectively untrue statement nowhat you believe. The Gospels disagree with each other (as we would suspect if they were genuine accounts by people), there are two creation narratives, quantum and Astro physics are incompatible etc.
Question for the astro peeps: I have an introduction-to-asteroid-and-comets lecture, which is currently very, uhm, narrative – lots of statements, but very little underlying physics. Does anyone have ideas about simple calculations/order-of-magnitude-musings I could include? 🧪🔭⚛️ 1/
December 10, 2025 at 10:48 PM
Question for the astro peeps: I have an introduction-to-asteroid-and-comets lecture, which is currently very, uhm, narrative – lots of statements, but very little underlying physics. Does anyone have ideas about simple calculations/order-of-magnitude-musings I could include? 🧪🔭⚛️ 1/
I was an undergrad 30+ years ago taking a full-time astro/physics-major load, working three jobs, and caring for a parent with terminal cancer.
So I don’t know how new some of this really is.
bsky.app/profile/shen...
So I don’t know how new some of this really is.
bsky.app/profile/shen...
Most college students are not that. Increasingly they are engaged in carework, have full-time jobs, or are otherwise responsible for things that they were not some fifteen or twenty years ago. Indeed, only the MOST privileged student has the time or space to fulfill the image of a full time student.
December 10, 2025 at 7:54 PM
I was an undergrad 30+ years ago taking a full-time astro/physics-major load, working three jobs, and caring for a parent with terminal cancer.
So I don’t know how new some of this really is.
bsky.app/profile/shen...
So I don’t know how new some of this really is.
bsky.app/profile/shen...
New #physics post - modeling the astroblaster. Could you get the top ball to make it into space? Spoiler alert: no.
rjallain.medium.com/can-an-astro...
rjallain.medium.com/can-an-astro...
Can an AstroBlaster Launch a Ball Into Space?
No. That’s the answer. You can’t throw something into space, so an astroblaster won’t do it either. OK, now for the other important…
rjallain.medium.com
December 10, 2025 at 3:09 PM
New #physics post - modeling the astroblaster. Could you get the top ball to make it into space? Spoiler alert: no.
rjallain.medium.com/can-an-astro...
rjallain.medium.com/can-an-astro...