Science For Sleep | What Is a Planck Star… Really?
Science Before Sleep
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Now on Spotify 🎧
Listen here: https://open.spotify.com/show/033FAXP...
A black hole may not end in an infinitely dense point. In this episode, what is a Planck star… really becomes a quiet journey into a speculative idea from quantum gravity.
A Planck star is a hypothetical object that could form when collapsing matter reaches an extreme density and quantum effects begin resisting further compression. Instead of becoming a true singularity, the core might rebound into a tiny, ultra-dense state hidden deep inside the black hole.
From the outside, this process could appear almost frozen by time. Inside, however, the collapse may continue toward a future release of energy, perhaps after an unimaginably long delay.
No Planck star has ever been observed, and the idea remains theoretical. Yet it offers a gentler possibility: that black holes may hide not an infinite endpoint, but a quantum structure waiting beyond the limits of current physics.
Let this exploration of what a Planck star really is settle softly into your thoughts.
Breathe slowly. Imagine a tiny core of matter suspended at the edge of space, time, and gravity. And rest in the stillness of a universe where even a black hole’s deepest center may be stranger than infinity.
Sources:
Planck Stars — https://arxiv.org/abs/1401.6562
Black Holes in Loop Quantum Gravity — https://arxiv.org/abs/1703.09149
Black Hole Fireworks — https://arxiv.org/abs/1407.0989
Hawking Evaporation and the Fate of Black Holes in Loop Quantum Gravity — https://arxiv.org/abs/2504.11998
Could Planck Star Remnants Be Dark Matter? — https://arxiv.org/abs/2506.03334
20 Comments
First, locally hawking photons near the Schwarzschild radius have not been redshited after climbing out of the gravity well. All the energy of a black hole exist in the fields outside the horizon. An infalling observer runs into not just locally hot hawking photons, but they are extreamly blue shifted having truly massive amounts of mass equlivent energy to scatter infalling matter.
Electrons first get stripped from atoms when hawking photons are UV ray and x ray energetic, which electrically polarizes the space just outside the Schwartz child radius strotring energy in the field which lowers the energy to pull photons from the field. protons and neutrons fall further untill they are bathed in gamma ray energetic hawking photons that probe and scatter off their very quarks. lastly even photon/hawking photon scattering rips particles anti-particle pair creation and annihilation and the resulting gamma ray energy photons carry the mass equivalent energy of the black hole away from Schwartzchild radius. The boundary makes all the energy of a black hole bounce outwards.
If all the mass equlivent energy/particles of a black hole exist outside the horizon then none of it ever crosses a causally disconnecting horizon. It's a hawking photon firewall time delayed bounce. And ibeing all the particles of a so called black hole exist in a thin boundary roughly a plank length distance from the Schwartzchild radius then it shouldn't be surprising that the boundary surface area is the maximum information density of the universe. And if nothing crosses the a horizon one is never created. The spacetime geometry inside the Schwartz child radius doesn't continue to get more dense untill one hits an infinatly dense singularity ratherly the spacetime curvature hits a ground floor. And because the boundary is maximumly quantum fluxuation information dense no quantum information or fluxuation can exist inside the Schwartzchild radius.
General Relativity equivalency applies to spacetime curvature and this alone would make an event horizon uneventful but quantum electrodynamics applies to particles and the spacetime boundy in casimir effect, and accelerated boundy in the dynamic casimir effect and hawking photons can push and and create particles out of energy in the fields. And in the case of the region just outside a Schwarzchild radius then spacetime is bathed in the photons carrying the mass equivalent energy of a black hole.
Einstein special relativity equations don't care if velocity is greater than the speed of light. But the universe demands causality which prevents causality violating tachyons. The speed of light the speed of causality or the the speed of information limits the real solutions to special relativity. While quantum information maximum packing density saves the universe from the worst predictions of general realitivity, space time inversion and monsterous singularity inside the schwarzchild radius.
The Schwartzchild radius is named after the man who first described the solution to Einstein's general relativity. It is immensely ironic that his sir name means black shield. The thing he described is very much a black shield.
I've been eyeballing this all day, off to beddy byes now. 🌜
Science For Sleep | What Is a Planck Star… Really?
Science Before Sleep
53,129 views
Now on Spotify 🎧
Listen here: https://open.spotify.com/show/033FAXP...
A black hole may not end in an infinitely dense point. In this episode, what is a Planck star… really becomes a quiet journey into a speculative idea from quantum gravity.
A Planck star is a hypothetical object that could form when collapsing matter reaches an extreme density and quantum effects begin resisting further compression. Instead of becoming a true singularity, the core might rebound into a tiny, ultra-dense state hidden deep inside the black hole.
From the outside, this process could appear almost frozen by time. Inside, however, the collapse may continue toward a future release of energy, perhaps after an unimaginably long delay.
No Planck star has ever been observed, and the idea remains theoretical. Yet it offers a gentler possibility: that black holes may hide not an infinite endpoint, but a quantum structure waiting beyond the limits of current physics.
Let this exploration of what a Planck star really is settle softly into your thoughts.
Breathe slowly. Imagine a tiny core of matter suspended at the edge of space, time, and gravity. And rest in the stillness of a universe where even a black hole’s deepest center may be stranger than infinity.
Sources:
Planck Stars — https://arxiv.org/abs/1401.6562
Black Holes in Loop Quantum Gravity — https://arxiv.org/abs/1703.09149
Black Hole Fireworks — https://arxiv.org/abs/1407.0989
Hawking Evaporation and the Fate of Black Holes in Loop Quantum Gravity — https://arxiv.org/abs/2504.11998
Could Planck Star Remnants Be Dark Matter? — https://arxiv.org/abs/2506.03334