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It is not clear that a starship powered by Hawking radiation can be made feasible within the laws of known physics. In the standard black hole thermodynamic model, the average energy of emitted quanta increases as size decreases, and extremely small black holes emit the majority of their energy in particles other than photons.
1ES 1927+654 has captured the attention of both professional astronomers and amateur stargazers due to its unpredictable behavior. Its sudden changes have made it a target for multi-wavelength observation campaigns, drawing data from X-ray, optical, and radio observatories around the world.
A quasi-star (also called black hole star) is a hypothetical type of extremely large and luminous star that may have existed early in the history of the Universe. They are thought to have existed for around 7–10 million years due to their immense mass .
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ULAS J1342+0928 is the third-most distant known quasar detected and contains the second-most distant and oldest known supermassive black hole, [1] [5] [6] [7] at a reported redshift of z = 7.54. The ULAS J1342+0928 quasar is located in the Boötes constellation . [ 3 ]
In other words, if enough radiation is aimed into a region of space, the concentration of energy can warp spacetime so much that it creates a black hole. This would be a black hole the original mass–energy of which was in the form of radiant energy rather than matter; [ 1 ] however, there is currently no uniformly accepted method of ...
CEERS 1019 is a black hole in the galaxy previously identified as EGSY8p7 or z910_6811 and may be the oldest known black hole as of 2023. The galaxy and its black hole came into existence about 570 million years after the Big Bang, and the black hole in the center of CEERS 1019 seems to be less massive than any other black holes identified in the early universe but still larger than black hole ...
The magnetospheric eternally collapsing object (MECO) is an alternative model for black holes initially proposed by Indian scientist Abhas Mitra in 1998 [1] [2] [3] and later generalized by American researchers Darryl J. Leiter and Stanley L. Robertson. [4]