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In astrophysics, a gravastar (a blend word of "gravitational vacuum star") is an...

Piotr Kosek: "In astrophysics, a gravastar (a blend word of "gravitational vacuum star") is an object hypothesized in a 2001 paper by Pawel O. Mazur and E..." — True

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📅 28.01.2026 · Czarne dziury nie istnieją? Nowa hipoteza fizyków - Ast... · 👁️ 4

True. Gravastars are hypothetical astrophysical objects that externally resemble black holes, exhibiting similar spacetime metrics and emitting identical radiation signatures. However, unlike black holes, gravastars do not pos...

"In astrophysics, a gravastar (a blend word of "gravitational vacuum star") is an object hypothesized in a 2001 paper by Pawel O. Mazur and Emil Mottola as an alternative to the black hole theory. It has the usual black hole metric outside of the horizon, but de Sitter metric inside. On the horizon there is an ultra-thin, incredibly tight shell of entirely new, unique exotic matter. This solution to the Einstein equations is stable and has no singularities. Instead, a gravastar is filled either with dark energy or with vacuum energy." "Gravastary to hipotetyczne obiekty, które z zewnątrz wyglądają jak czarne dziury, ale w środku nie mają osobliwości, tylko twardą powierzchnię albo jakiś egzotyczny stan materii, który przeciwdziała grawitacji."
🌐 (Machine-translated — original in Polish) · Original in Polishuage
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Transcript excerpt

Oryginał w języku Polskim Open on YouTube

zywienia czasoprzestrzeni, więc trochę się to rozsupłuje, tak? Yyy, a to sprawia, że czarna dziura traci masę, no i ostatecznie wyparowuje. A dlaczego masę, skoro to zakrzywienie czasoprzestrzeni? No bo masa i energia to właściwie jest jedno i to samo. A żeby zakrzywić czasoprzestrzeń, potrzebujemy energii, która jest też poniekąd masą. Brzmi dziwnie, no ale tak to właśnie wygląda. Argument sceptyków brzmi następująco. Podczas zapadania się gwiazdy materia staje się niezwykle gorąca i gęsta. Zanim horyzont się zamknie, procesy kwantowe mogą sprawić, że gwiazda wypromieniuje swoją masę tak szyb

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