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Astronomers are debating the nature of mysterious 'little red dots' observed by the James Webb Space Telescope, with some proposing they are a new type of object called black hole stars.
Astronomers have detected star S301, the fastest known star in the Milky Way, orbiting the supermassive black hole Sagittarius A* and potentially enabling measurements of its spin.
This paper derives semiclassical Einstein equations from quantum relative entropy, providing a quantum field theoretic generalization of Jacobson's thermodynamic approach to gravity.
This paper introduces a continuous metric field framework trained by a single causal contrastive loss that unifies geometric structure discovery from robot navigation to black hole emergence, demonstrating zero-shot generalization across dimensions.
The James Webb Space Telescope is revealing unexpected mysteries about the early universe, including perplexing 'little red dots' and ancient black holes that challenge existing astrophysical theories, with new hypotheses emerging to explain them.
Astronomers using JWST have directly observed a cosmic recycling cycle where gas heated by a black hole's jets cools into filaments that fall back, feeding the black hole. This confirms why supermassive black holes never run out of fuel.
Astrophysicists have found evidence that 'impossible' black holes in the 40-100 solar mass range are actually second-generation objects formed from mergers of smaller black holes, based on gravitational wave data from 153 mergers.