{"id":738203,"date":"2026-07-02T03:57:11","date_gmt":"2026-07-02T03:57:11","guid":{"rendered":"https:\/\/www.newsbeep.com\/us\/738203\/"},"modified":"2026-07-02T03:57:11","modified_gmt":"2026-07-02T03:57:11","slug":"physicists-devise-black-hole-alternative-with-a-mini-universe-at-its-center","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/us\/738203\/","title":{"rendered":"Physicists Devise Black Hole Alternative With a \u2018Mini Universe\u2019 at Its Center"},"content":{"rendered":"

Theoretically, black holes emerged from the principles of Albert Einstein\u2019s general relativity (gravity as distortions of spacetime), but the man himself doubted black holes, saying<\/a> their singularity \u201cbrings so much arbitrariness into the theory that it actually nullifies its laws.\u201d<\/p>\n

Thanks to the Event Horion Telescope<\/a>, we now know black holes exist, but a new study<\/a> published recently in Physical Review D suggests Einstein might have been onto something in his doubts. In the paper, theoretical physicists seriously consider the possibility of gravitational vacuum condensate stars\u2014gravastars for short\u2014which are ultra-compact stars with a thin shell of ordinary matter and an interior of dark energy. As a result, a gravastar externally resembles a black hole, but doesn\u2019t form a singularity or an event horizon. This also means the rules of general relativity don\u2019t break down, either.<\/p>\n

\u201cAn aspect of gravastars that has so far not been addressed, mostly because of the challenges it poses, is their genesis from a generic spherical distribution of matter,\u201d co-authors Daniel Jampolski and Luciano Rezolla of Goethe University in Germany write in the paper. \u201cWe here present, for the first time, a model for the creation of a static gravastar following a gravitational collapse of a spherical cloud of matter.\u201d<\/p>\n

The black hole lore <\/p>\n

A singularity in astrophysics refers to a single point that remains after a dying star collapses under its own mass. Einstein\u2019s issue with black holes emerged from the singularity, as the legendary scientist had a very mathematical view of spacetime. The idea that a star potentially billions of solar masses could concentrate on a tiny point while infinitely curving spacetime appeared to him \u201can unimaginable misfortune [malheur] for theory<\/a>.\u201d<\/p>\n

\"Albert\u00a9 Ferdinand Schmutzer\/Historiches Museum Bern <\/p>\n

Enter gravastars. The concept for this black hole alternative was first introduced<\/a> in 2001, as something that gave a \u201cnew final endpoint of complete gravitational collapse.\u201d Gravastars would be almost as massive and compact as black holes, but without a singularity or event horizon. The key to its stabilization would be outward pressure exerted by dark energy<\/a>, a hypothetical force said to drive the expansion of the universe.<\/p>\n

Making gravastars work <\/p>\n

As ideal as that sounds, physicists had yet to actually work out how gravastars could form in reality. The latest paper claims to have a solution that aligns nicely with the rules of general relativity, as well as well-accepted principles in astrophysics describing the environment near black holes.<\/p>\n

A fascinating implication of the solution is that the collapse of gravastars may trigger an explosion \u201cnot very different from the Big Bang from which our universe has emerged,\u201d according to a press release<\/a> on the study. As dark energy drives the expansion of this new \u201cmini-universe,\u201d it counteracts the force of gravity and halts the star\u2019s collapse before a black hole starts to form.<\/p>\n

An option, not a rejection <\/p>\n

That said, as the team noted in the study, such processes would require ideal, fine-tuned conditions to unfold as the researchers predict. Until we actually observe something very similar out in the universe, the model is just a theory. It\u2019s also worth noting that gravastars aren\u2019t necessarily replacements for black holes, which, as Rezzolla notes, remain the \u201cmost natural and simplest solution to the fate of gravitational collapse.\u201d Rather, it posits an additional scenario for what could happen to a dying star besides becoming a nuetron star or a black hole.<\/p>\n

There is still much we don\u2019t understand about the extreme conditions associated with gravitational collapse, so it\u2019d be wise to \u201cmaintain an unbiased approach towards what we do not know and hence explore both the accepted wisdom and the more exotic interpretations,\u201d Rezolla added. \u201cHistory teaches us that it is not unusual for the latter to become the former.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"Theoretically, black holes emerged from the principles of Albert Einstein\u2019s general relativity (gravity as distortions of spacetime), but…\n","protected":false},"author":2,"featured_media":738204,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[48],"tags":[15302,8150,13203,8131,79,193],"class_list":["post-738203","post","type-post","status-publish","format-standard","has-post-thumbnail","category-space","tag-albert-einstein","tag-black-holes","tag-dark-energy","tag-general-relativity","tag-science","tag-space"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts\/738203","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/comments?post=738203"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts\/738203\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/media\/738204"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/media?parent=738203"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/categories?post=738203"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/tags?post=738203"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}