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Free AstroScience

@freeastroscience.com
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Welcome to Free AstroScience Group's official Bluesky profile! We aim to enlighten you with science and culture, simply and accessibly.

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Free AstroScience @freeastroscience.com · 06/10/2026
A Siberian lab worker's death raised plague fears. WHO, Russian and journal data say the risk is low, and 11 animal foci keep the disease alive. www.freeastroscience.com/plague-in-ru...
freeastroscience.com
Is Plague in Russia Back, or Did It Never Leave? - FreeAstroScience
A Siberian lab worker's death raised plague fears. WHO, Russian and journal data say the risk is low, and 11 animal foci keep the disease alive.
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Free AstroScience @freeastroscience.com · 05/10/2026
Iron ions pushed untouched cells toward tumors in a 2026 study. We set its 0.8-gray dose beside a real Mars mission, and the comparison is inside. www.freeastroscience.com/space-radiat...
freeastroscience.com
Does Space Radiation Give Untouched Cells Cancer? - FreeAstroScience
Iron ions pushed untouched cells toward tumors in a 2026 study. We set its 0.8-gray dose beside a real Mars mission, and the comparison is inside.
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Free AstroScience @freeastroscience.com · 02/10/2026
Five years of FAST timing weighed PSR J1856-0039 at 2.488 solar masses. Its merger should leave a neutron star, not a black hole. The math is inside. www.freeastroscience.com/double-neutr...
freeastroscience.com
The Lightest Double Neutron Star Ever Weighed - FreeAstroScience
Five years of FAST timing weighed PSR J1856-0039 at 2.488 solar masses. Its merger should leave a neutron star, not a black hole. The math is inside.
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Free AstroScience @freeastroscience.com · 01/10/2026
Mars orbits inside the Sun's habitable zone and still freezes. We work out the zone's edges for any star, and the dates when Earth falls out of it. www.freeastroscience.com/what-is-habi...
freeastroscience.com
What is the habitable zone? - FreeAstroScience
Mars orbits inside the Sun's habitable zone and still freezes. We work out the zone's edges for any star, and the dates when Earth falls out of it.
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Free AstroScience @freeastroscience.com · 01/10/2026
A 7-second wobble in a pulsing star hints at a giant in the habitable zone of a star nine times brighter than the Sun. We check its 51% odds inside. www.freeastroscience.com/a-type-star-...
freeastroscience.com
A-Type Star's 7-Second Wobble Hints at a Planet - FreeAstroScience
A 7-second wobble in a pulsing star hints at a giant in the habitable zone of a star nine times brighter than the Sun. We check its 51% odds inside.
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Free AstroScience @freeastroscience.com · 30/09/2026
Most shooting stars are comet dust smaller than a grain of sand, burning up 100 km above you. Hear how a meteor shower works in Episode 18, free. www.freeastroscience.com/meteor-showe...
freeastroscience.com
What Really Falls During a Meteor Shower? - FreeAstroScience
Most shooting stars are comet dust smaller than a grain of sand, burning up 100 km above you. Hear how a meteor shower works in Episode 18, free.
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Free AstroScience @freeastroscience.com · 30/09/2026
Saturn at opposition, two meteor showers and a Moon over the Pleiades: October 2026's sky events timed against moonlight, with the clocks converted. www.freeastroscience.com/october-2026...
freeastroscience.com
The October 2026 Night Sky, Timed by the Moon - FreeAstroScience
Saturn at opposition, two meteor showers and a Moon over the Pleiades: October 2026's sky events timed against moonlight, with the clocks converted.
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Free AstroScience @freeastroscience.com · 29/09/2026
New 2026 simulations: a hot but solid Theia split and left an intact Moon in hours; a cold one left only debris. The run-by-run numbers are inside. www.freeastroscience.com/how-did-the-...
freeastroscience.com
How Did the Moon Form? Ask How Hot Theia Was - FreeAstroScience
New 2026 simulations: a hot but solid Theia split and left an intact Moon in hours, a cold one only debris. The run-by-run numbers are inside.
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Free AstroScience @freeastroscience.com · 29/09/2026
Two photons interfered 510 km up in the first quantum computer in space. We checked the preprint: the dip beats classical light by 2.1 sigma, not 5. www.freeastroscience.com/quantum-comp...
freeastroscience.com
Did a Quantum Computer in Space Really Compute? - FreeAstroScience
Two photons interfered 510 km up in the first quantum computer in space. We checked the preprint: the dip beats classical light by 2.1 sigma, not 5.
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Free AstroScience @freeastroscience.com · 28/09/2026
Starship Flight 14 reached orbit and released 26 Starlink V3 satellites, then came home after one lap, not six. We put the whole day on one clock. www.freeastroscience.com/starship-fli...
freeastroscience.com
Starship Flight 14 Reached Orbit. Why So Short? - FreeAstroScience
Starship Flight 14 reached orbit and released 26 Starlink V3 satellites, then came home after one lap, not six. We put the whole day on one clock.
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Free AstroScience @freeastroscience.com · 21/09/2026
Current policy points to 3C. Holding 1.5C instead spares 11,600 US smoke-related deaths a year, and your AC works only while the grid does. Numbers inside. freeastroscience.com/climate-chan...
freeastroscience.com
Climate Change Harms Health. What Works? - FreeAstroScience
Cutting warming to 1.5C instead of 3 would avoid 11,600 US wildfire-smoke deaths a year. Four studies price each defense, and the math is inside.
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Free AstroScience @freeastroscience.com · 20/09/2026
Your brain's front and back never shared a starting cell. Jokhai et al. traced 494 clusters in mouse embryos. Their two published percentages cover 472. The 22 left over are the ones nobody prints. freeastroscience.com/forebrain-mi...
freeastroscience.com
Your Brain's Back Half Began Somewhere Else - FreeAstroScience
Mouse lineage tracing and human stem cells put the hindbrain on its own track from the start. The 494-cluster count the coverage skipped is inside.
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Free AstroScience @freeastroscience.com · 20/09/2026
MIT's 40-page report names cognitive surrender once and never counts it. We ran the numbers: at least two undergraduates in three use AI and fear it. freeastroscience.com/is-ai-causin...
freeastroscience.com
Is AI Causing Cognitive Surrender in Students? - FreeAstroScience
MIT's 40-page report names cognitive surrender once and never counts it. We ran the numbers: at least two undergraduates in three use AI and fear it.
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Free AstroScience @freeastroscience.com · 20/09/2026
Webb found nine brown dwarfs in IC 348 down to 2 Jupiter masses, and eight carry a hydrocarbon no model predicted. What class H breaks is inside. freeastroscience.com/brown-dwarf-...
freeastroscience.com
A Brown Dwarf Spectral Class No Model Predicted - FreeAstroScience
Webb found nine brown dwarfs in IC 348 down to 2 Jupiter masses, and eight carry a hydrocarbon no model predicted. What class H breaks is inside
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Free AstroScience @freeastroscience.com · 19/09/2026
Six months outside the ISS damaged 19 of 61 eye lenses, six in a way no one can explain. Nobody can operate in space yet, and a Moon base has a date. freeastroscience.com/cataract-sur...
freeastroscience.com
Can Cataract Surgery Survive a Trip to Mars? - FreeAstroScience
Six months outside the ISS damaged 19 of 61 eye lenses, six in a way no one can explain. Nobody can operate in space yet, and a Moon base has a date.
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Free AstroScience @freeastroscience.com · 18/09/2026
You were handed a paradox. Physics has an inequality instead, a ceiling of one and a measured 0.97. The algebra and the missing 3% are inside. freeastroscience.com/wave-particl...
freeastroscience.com
Wave or Particle? Why the Answer Is 0.97 - FreeAstroScience
You were handed a paradox. Physics has an inequality instead, a ceiling of one and a measured 0.97. The algebra and the missing 3% are inside.
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Free AstroScience @freeastroscience.com · 18/09/2026
A germanium crystal under 1.4 km of rock saw nothing for 62 days. That silence pushed one number to 4.64 m and killed the model. The math is inside. freeastroscience.com/gravitationa...
freeastroscience.com
62 Days of Nothing Ended a Gravity Theory - FreeAstroScience
A germanium crystal under 1.4 km of rock saw nothing for 62 days. That silence pushed one number to 4.64 m and killed the model. The math is inside.
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Free AstroScience @freeastroscience.com · 17/09/2026
How do we measure the distances in space? freeastroscience.com/how-do-we-me...
freeastroscience.com
How do we measure the distances in space? - FreeAstroScience
Gaia's next release should push parallax to 10,000 parsecs, past the 8,275-parsec Galactic center. The whole distance ladder is inside, rung by rung.
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Free AstroScience @freeastroscience.com · 17/09/2026
What is Quantum Tunneling? A 7 eV electron crosses a 1 nm wall 7 times in 100 million, and the Sun runs on odds like that. The formula, four widths and a 2021 error fixed. freeastroscience.com/what-is-quan...
freeastroscience.com
What is Quantum Tunneling? - FreeAstroScience
A 7 eV electron crosses a 1 nm wall 7 times in 100 million, and the Sun runs on odds like that. The formula, four widths and a 2021 error fixed.
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Free AstroScience @freeastroscience.com · 17/09/2026
LRO found a 222-meter crater from spring 2024, the largest fresh one known. Its energy implies a 7-meter rock, not six stories, and the math is here. freeastroscience.com/new-crater-o...
freeastroscience.com
How Big Was the Rock That Dug McGetchin Crater? - FreeAstroScience
LRO found a 222-meter crater from spring 2024, the largest fresh one known. Its energy implies a 7-meter rock, not six stories, and the math is here.
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Free AstroScience @freeastroscience.com · 14/09/2026
freeastroscience.com/where-is-bep...
freeastroscience.com
Where Is BepiColombo Now? 112 Minutes of Silence - FreeAstroScience
BepiColombo let go of its transfer module 200 million km out. Light explains only 11 of the 112 minutes Earth waited. The full timeline is inside.
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Free AstroScience @freeastroscience.com · 14/09/2026
Ten thousand AI agents proved a fluid can hit infinite speed in 88 hours. The catch is the force pushing it, and the real question is still open. freeastroscience.com/navier-stoke...
freeastroscience.com
Navier-Stokes Solved, But Not the Hard Half. - FreeAstroScience
Ten thousand AI agents proved a fluid can hit infinite speed in 88 hours. The catch is the force pushing it, and the real question is still open.
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Free AstroScience @freeastroscience.com · 12/09/2026
Super El Niño raises heat, drought and flood risks into 2027. Explore the WMO forecasts, historical disasters and what the climate evidence shows. freeastroscience.com/super-el-nin...
freeastroscience.com
Super El Niño: Why the 2027 Risk Is Alarming - FreeAstroScience
Super El Niño raises heat, drought and flood risks into 2027. Explore the WMO forecasts, historical disasters and what the climate evidence shows.
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Free AstroScience @freeastroscience.com · 11/09/2026
The ongoing quest to understand the absolute limits of solar activity has led researchers to reevaluate historical archives and stellar analogs. freeastroscience.com/sunspots-rev...
freeastroscience.com
Sunspots reveal the latent capacity to trigger superflares - FreeAstroScience
The ongoing quest to understand the absolute limits of solar activity has led researchers to reevaluate historical archives and stellar analogs
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Free AstroScience @freeastroscience.com · 10/09/2026
A 35,000-solar-mass black hole in UGCA 320 feeds on gas that, due to its own motion, piles up behind it. We ran the radius the paper skipped; the caveat is inside. freeastroscience.com/wandering-bl...
freeastroscience.com
Can a Wandering Black Hole Eat Its Own Wake? - FreeAstroScience
A 35,000-solar-mass black hole in UGCA 320 feeds on gas that, due to its own motion, piles up behind it. We ran the radius the paper skipped; the caveat is inside.
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Free AstroScience @freeastroscience.com · 10/09/2026
freeastroscience.com/what-secrets...
freeastroscience.com
What the Doppler Effect Can and Cannot Measure - FreeAstroScience
Andromeda's 301 km/s approach, a planet weighed from a 59 m/s wobble, and a galaxy whose redshift gives 14 times light speed: four formulas inside.
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Free AstroScience @freeastroscience.com · 08/09/2026
Tidal stretch at a black hole's horizon falls as the square of its mass. We ran the numbers: the survival line sits near 4,600 suns, not a billion. freeastroscience.com/falling-into...
freeastroscience.com
How Big Must a Black Hole Be to Spare You? - FreeAstroScience
Tidal stretch at a black hole's horizon falls as the square of its mass. We ran the numbers: the survival line sits near 4,600 suns, not a billion.
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Free AstroScience @freeastroscience.com · 08/09/2026
A black hole's ringdown shifts twice, and the gap between the two shifts tests the matter around it. Two models, 12.5 times apart, worked inside. freeastroscience.com/black-hole-r...
freeastroscience.com
Black Hole Ringdown Can Betray Hidden Matter - FreeAstroScience
A black hole's ringdown shifts twice, and the gap between the two shifts tests the matter around it. Two models, 12.5 times apart, worked inside.
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Free AstroScience @freeastroscience.com · 02/09/2026
freeastroscience.com/what-is-cher...
freeastroscience.com
What is the Cherenkov radiation? - FreeAstroScience
Light in water crawls at 225,000 km/s, so an electron passes it and glows. The cone opens to 41.4 degrees, and the whole photon count is inside.
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Free AstroScience @freeastroscience.com · 02/09/2026
You were taught it's the redshift. It isn't. Expansion buys a factor of 1.7, the galaxies' age buys a million billion, and the sums are inside. freeastroscience.com/why-is-space...
freeastroscience.com
Why Is Space Black? The Sky Should Blind You - FreeAstroScience
You were taught it's the redshift. It isn't. Expansion buys a factor of 1.7, the galaxies' age buys a million billion, and the sums are inside.
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Free AstroScience @freeastroscience.com · 01/09/2026
Your calendar says autumn. The thermometer says August. Three sources explain the 22 days before the equinox, and only one of them explains the rule. freeastroscience.com/meteorologic...
freeastroscience.com
Why Are There Two Autumns, 22 Days Apart? - FreeAstroScience
Your calendar says autumn. The thermometer says August. Three sources explain the 22 days before the equinox, and only one of them explains the rule.
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Free AstroScience @freeastroscience.com · 01/09/2026
Recent observations reveal that the supermassive black hole in NGC 1275 emitted an X-ray flare, followed by its powerful radio jets approximately 300 days later. freeastroscience.com/ngc-1275-x-r...
freeastroscience.com
NGC 1275: X-ray flare followed by radio jet activity 300 days later - FreeAstroScience
Recent observations reveal that the supermassive black hole in NGC 1275 emitted an X-ray flare, followed by its powerful radio jets approximately 300 days later
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Free AstroScience @freeastroscience.com · 01/09/2026
Recent research led by Shi-Liang Zhu demonstrates the first direct laboratory test of Richard Feynman's eighty-year-old quantum path-integral concept using single particles of light freeastroscience.com/confirming-f...
freeastroscience.com
Confirming Feynman's vision: the first laboratory test of quantum path integrals - FreeAstroScience
Recent research led by Shi-Liang Zhu demonstrates the first direct laboratory test of Richard Feynman's eighty-year-old quantum path-integral concept using single particles of light
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Free AstroScience @freeastroscience.com · 29/08/2026
Webb read the Galactic center's brightest infrared star and found silicate dust, not carbon. A 2008 reading was wrong, and the arithmetic is inside. freeastroscience.com/cosmic-dust-...
freeastroscience.com
Soot or Sand? Cosmic Dust Near a Black Hole - FreeAstroScience
Webb read the Galactic center's brightest infrared star and found silicate dust, not carbon. A 2008 reading was wrong, and the arithmetic is inside.
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Free AstroScience @freeastroscience.com · 29/08/2026
freeastroscience.com/nancy-grace-...
freeastroscience.com
Roman Telescope Sees 200 Hubble Frames at Once - FreeAstroScience
NASA's own numbers settle it: one Roman image spans about 200 Hubble infrared frames. The same mirror, remade for surveys, and the woman it honors.
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Free AstroScience @freeastroscience.com · 29/08/2026
freeastroscience.com/fracking-ear...
freeastroscience.com
Do Fracking Earthquakes Warn You First? - FreeAstroScience
Foreshocks preceded 71 of 77 fracking earthquakes in western Canada. Raise the bar to magnitude 2 and about 23 gave no warning. Arithmetic inside.
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Free AstroScience @freeastroscience.com · 28/08/2026
The USGS reported a magnitude 4.4 quake in Nepal on 26 August 2026, then withdrew it. A glacier collapse made the signal, and the catalog entry shows how. freeastroscience.com/glacier-coll...
freeastroscience.com
Glacier Collapse, Not an Earthquake
The USGS reported a magnitude 4.4 quake in Nepal on 26 August 2026, then withdrew it. A glacier collapse made the signal, and the catalog entry shows how.
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Free AstroScience @freeastroscience.com · 26/08/2026
Quantum teleportation moves a quantum state, not matter. Why do two classical bits keep it slower than light, and why is the fiber record still 100 km? freeastroscience.com/what-is-quan...
freeastroscience.com
Quantum Teleportation: What Really Moves - FreeAstroScience
Quantum teleportation moves a quantum state, not matter. Why two classical bits keep it slower than light, and why the fiber record is still 100 km.
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Free AstroScience @freeastroscience.com · 24/08/2026
freeastroscience.com/are-energy-d...
freeastroscience.com
Are Energy Drinks Bad for You? Know the Risks - FreeAstroScience
Are energy drinks bad for you? See how caffeine affects sleep, blood pressure, and heart health—and how to reduce the risks before your next can.
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Free AstroScience @freeastroscience.com · 23/08/2026
Learn what gamma-ray bursts are, what causes short and long GRBs, how their afterglows work, and whether one could threaten Earth. freeastroscience.com/what-are-gam...
freeastroscience.com
What Are Gamma-Ray Bursts? A Clear Guide - FreeAstroScience
Learn what gamma-ray bursts are, what causes short and long GRBs, how their afterglows work, and whether one could threaten Earth.
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Free AstroScience @freeastroscience.com · 23/08/2026
Long-period radio transients may be powered by white dwarf binaries. See how new simulations reveal the surprising mechanism—and its key uncertainty. freeastroscience.com/long-period-...
freeastroscience.com
What Really Powers Long-Period Radio Transients? - FreeAstroScience
Long-period radio transients may be powered by white dwarf binaries. See how new simulations reveal the surprising mechanism—and its key uncertainty.
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Free AstroScience @freeastroscience.com · 23/08/2026
What is deep learning? See how neural networks learn from data, why multiple layers matter, how training works, and where modern AI can fail. freeastroscience.com/what-is-deep...
freeastroscience.com
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Free AstroScience @freeastroscience.com · 22/08/2026
A brain injury can steal speech and swallowing. A new study finds low-frequency deep brain stimulation, at 55 hertz not 130, gave one man some back. freeastroscience.com/deep-brain-s...
freeastroscience.com
Deep Brain Stimulation for Lost Speech
A brain injury can steal speech and swallowing. A new study finds low-frequency deep brain stimulation, at 55 hertz not 130, gave one man some back.
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Free AstroScience @freeastroscience.com · 22/08/2026
The X(2370) glueball case just got stronger. See why BESIII’s missing decay matters, what the evidence supports, and what remains uncertain. Read now. freeastroscience.com/x2370-glueba...
freeastroscience.com
Did BESIII Finally Find the X(2370) Glueball? - FreeAstroScience
The X(2370) glueball case just got stronger. See why BESIII’s missing decay matters, what the evidence supports, and what remains uncertain. Read now.
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Free AstroScience @freeastroscience.com · 21/08/2026
Why does misinformation stick even after a correction? The psychology of fake news, the continued influence effect, and the defenses that actually work. freeastroscience.com/misinformati...
freeastroscience.com
Why Misinformation Sticks in Your Brain - FreeAstroScience
Why does misinformation stick even after a correction? The psychology of fake news, the continued influence effect, and the defenses that actually work.
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Free AstroScience @freeastroscience.com · 20/08/2026
On 28 August 2026 the Moon reaches umbral magnitude 0.930 and stops. Here is what the missing sliver does to the color, and when to look. freeastroscience.com/blood-moon-2...
freeastroscience.com
2026 blood moon: 7 percent short - FreeAstroScience
On 28 August 2026 the Moon reaches umbral magnitude 0.930 and stops. Here is what the missing sliver does to the color, and when to look. (
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Free AstroScience @freeastroscience.com · 20/08/2026
freeastroscience.com/how-quantum-...
freeastroscience.com
How quantum gravity might explain dark energy - FreeAstroScience
Recent theoretical investigations propose that macroscopic manifestations of quantum gravity could naturally account for the accelerated expansion of the universe
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Free AstroScience @freeastroscience.com · 20/08/2026
While sulfur is one of the fundamental elements essential for life, its chemistry around rare, massive, evolved stars has long remained a mystery freeastroscience.com/sulfur-clues...
freeastroscience.com
Sulfur clues: solving an ancient isotope puzzle in deep space - FreeAstroScience
While sulfur is one of the fundamental elements essential for life, its chemistry around rare, massive, evolved stars has long remained a mystery
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Free AstroScience @freeastroscience.com · 19/08/2026
What is force? Push or pull is not enough. The newton, F = ma, and why nine textbook force types are really two fundamental interactions. freeastroscience.com/what-is-forc...
freeastroscience.com
What Is Force? - FreeAstroScience
What is force? Push or pull is not enough. The newton, F = ma, and why nine textbook force types are really two fundamental interactions.
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Free AstroScience @freeastroscience.com · 19/08/2026
GRAVITY+ has found S301, the fastest star in the Milky Way, circling Sagittarius A* at 25,000 km/s. Close enough to reveal the black hole's spin at last. freeastroscience.com/spinning-bla...
freeastroscience.com
The Star Racing a Spinning Black Hole
GRAVITY+ has found S301, the fastest star in the Milky Way, circling Sagittarius A* at 25,000 km/s. Close enough to reveal the black hole's spin at last.
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