X-Rays Can Echo and Bend Around the Back of Supermassive Black Holes
We have now seen echoes of X-ray bursts from behind a black hole, confirming a prediction of general relativity.
New Scientist
Topics: Black Holes Galaxies Gravity Relativity
Is Human Consciousness Creating Reality?
Is the physical universe independent from us, or is it created by our minds, as suggested by scientist Robert Lanza?
Big Think
Topics: Consciousness Quantum Mechanics Reality Relativity
Wormhole Tunnels in Spacetime May Be Possible, New Research Suggests
There may be realistic ways to create cosmic bridges predicted by general relativity.
Scientific American
Topics: Black Holes Entanglement Relativity
An Earlier Universe Existed Before the Big Bang, and Can Still Be Observed Today, Says Nobel Winner
Sir Roger Penrose: “The Big Bang was not the beginning. There was something before, and that something is what we will have in our future.”
The Telegraph
Topics: Big Bang Black Holes Gravity Relativity Universe
The Universe Might Have a Fundamental Clock That Ticks Very, Very Fast
Time could be the result of particles interacting with a ticking cosmic timepiece.
Science News
Topics: Quantum Gravity Quantum Mechanics Relativity Universe
Scientists Confirm the Basis of Einstein’s Theory of Relativity
They measured the light from a pulsar down to the nanosecond to do so.
Engadget
Topics: Relativity
In Search of Naked Singularities
The “cosmic censorship” hypothesis says they shouldn’t exist — but is it possible that we’ve already detected them and misinterpreted their nature?
Topics: Avi Loeb Black Holes Gravitational Waves Quantum Gravity Quantum Mechanics Relativity String Theory
Star’s Strange Path Around Black Hole Proves Einstein Right — Again
Albert Einstein’s theory of general relativity has aced another test.
Science
Topics: Black Holes Gravity Relativity Stars
Does Time Really Flow? New Clues Come From a Century-Old Approach to Math
The laws of physics imply that the passage of time is an illusion. To avoid this conclusion, we might have to rethink the reality of infinitely precise numbers.
Quanta Magazine
Topics: Black Holes Quantum Gravity Quantum Mechanics Relativity Universe
Wormholes Reveal a Way to Manipulate Black Hole Information in the Lab
A proposal for building wormhole-connected black holes offers a way to probe the paradoxes of quantum information.
Topics: Black Holes Entanglement Information Quantum Gravity Quantum Mechanics Relativity
‘Einstein’s Biggest Blunder’ May Have Finally Been Fixed
The cosmological constant has plagued physicists for more than a century.
Live Science
Topics: Dark Energy Gravity Multiverse Relativity Universe
A Star Orbiting in the Extreme Gravity of a Black Hole Validates General Relativity
The star S0-2 gets so close to the supermassive black hole at the center of the galaxy that it can be used to test our fundamental understanding of gravity.
Smithsonian
Alternative Theory of Gravity Makes a Nearly Testable Prediction
A massive simulation done with a “chameleon” theory of gravity.
Ars Technica
Topics: Dark Energy Dark Matter Galaxies Gravity Relativity Stars Universe
Gravity’s Residue
An unusual approach to unifying the laws of physics could solve Hawking’s black-hole information paradox — and its predicted gravitational “memory effect” could be picked up by LIGO.
FQXi
Topics: Black Holes Gravity Relativity
Paradox Is Illuminating the Black Hole
How reconciling opposites is driving the science of black holes forward.
Nautilus
Topics: Black Holes Quantum Mechanics Relativity
Why Is the Quantum So Mysterious?
Quantum mechanics is how the world works at deepest levels. But nobody has any idea why.
Closer To Truth
Topics: Entanglement Quantum Gravity Quantum Mechanics Relativity Superposition
Milky Way’s Black Hole Provides Long-Sought Test of Einstein’s General Relativity
An observation decades in the making confirms predictions about how light behaves in an immense gravitational field.
Nature
Topics: Black Holes Relativity
Physics Needs Philosophy / Philosophy Needs Physics
Philosophy has always played an essential role in the development of science, physics in particular, and is likely to continue to do so.
Topics: Knowledge Quantum Gravity Quantum Mechanics Relativity
Quantum Experiment in Space Confirms That Reality Is What You Make It
The new work shows that a photon’s nature remains undefined even over thousands of kilometers, says Philippe Grangier, a physicist at the Institute of Optics in Palaiseau, France.
Topics: Quantum Mechanics Relativity
A Defense of the Reality of Time
Time isn’t just another dimension, argues Tim Maudlin. To make his case, he’s had to reinvent geometry.
Topics: Nature of Time Relativity
Can We Really Travel Back in Time to Change History?
Physicist Paul Davies responds to “Mr. Thursday,” Emily St. John Mandel’s short story about time travel.
Future Tense, Slate
Topics: Nature of Time Quantum Mechanics Relativity
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