Forward-in-time analysis of delayed-choice entanglement swapping
Updated: 2025-01-21 21:06:30
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Skip to content Universe Today Space and astronomy news Menu Videos Newsletter Podcast Contact Us Support Us Log in A typical spiral galaxy grows by mergers and acquisitions . The central supermassive black holes in galaxies likely spent their early formative epochs feasting on a smooth diet of stars and gas . That history is reflected in their spin rates . AdobeStock . image Posted on January 20, 2025 January 20, 2025 by Carolyn Collins Petersen Black Holes are Spinning Faster Than Expected There’s a Universe full of black holes out there , spinning merrily awayâsome fast , others more slowly . A recent survey of supermassive black holes reveals that their spin rates reveal something about their formation . history If you want to describe a supermassive black hole’s characteristics ,
Happy New Year! I recently wrote about how the Parker Solar Probe crossed the Sun’s ‘Alfvén surface’: the surface outside which the outflowing solar wind becomes supersonic. This is already pretty cool—but even better, the ‘sound’ here is not ordinary sound: it consists of vibrations in both the hot electrically conductive plasma of the Sun’s […]