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Four Years On, New Experiment Sees No Sign of ‘Cosmic Dawn’
...time, the first stars collapsed into black holes. The hot gas swirling around these black holes generated X-rays that heated hydrogen clouds throughout the universe, increasing the rate of 21-centimeter...
In Search of Cracks in Albert Einstein’s Theory of Gravity
...but it doesn’t explain what happened at the Big Bang, or what happens inside black holes. The singularity of a black hole is mathematically very similar to the Big Bang...
Any Single Galaxy Reveals the Composition of an Entire Universe
...The simulations also included rough treatments of complicated events like supernovas and jets that erupt from supermassive black holes. Ding’s neural network studied nearly 1 million simulated galaxies within these...
Gravitational Waves Should Permanently Distort Space-Time
...loss of information in black holes, a very deep issue in the structure of space and time.” A Scar in Space-Time Why would a gravitational wave permanently change space-time’s structure?...
The Webb Space Telescope Will Rewrite Cosmic History. If It Works.
...stars, to learn about the invisible matter whose gravity coaxed them into being, and about the roles of magnetism and turbulence, and how enormous black holes grew and worked their...
A Hint of Dark Matter Sends Physicists Looking to the Skies
...from undiscovered particles to black holes. One idea in particular, however, is drawing renewed attention: the axion. And researchers are turning to the skies to track it down. Axions are...
One Lab’s Quest to Build Space-Time Out of Quantum Particles
...you would need a particle accelerator as big as the Milky Way galaxy. Likewise, black holes hold singularities that are governed by quantum gravity, but no black holes are particularly...
This Physicist Discovered an Escape From Hawking’s Black Hole Paradox
...to particles near a black hole’s periphery, and saw unitarity break down. So do evaporating black holes really destroy information, meaning unitarity is not a true principle of nature? Or...
Brighter Than a Billion Billion Suns: Gamma-Ray Bursts Continue to Surprise
...from stars more than 20 times the mass of our sun collapsing into black holes and exploding as supernovas. The latter, which last only up to about a second, are...