#Gravity

Science & Technology | Cool Stuff

Free-fall experiment could test if gravity is a quantum force

The effort to reconcile general relativity with quantum mechanics always hits one snag: gravity. An experiment could finally tell us if it is a quantum force

Science & Technology | Cool Stuff

In A First, Scientists Spot Light Amid Gravitational Waves Emitted By Colliding Stars

Scientists for the first time have detected both gravitational waves and light from the collision of two dead, incredibly dense neutron stars.

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Gravity Could Be the Result of Random Quantum Fluctuations

A new theory takes a feature of a quantum mechanical model and shows how it can generate gravity.

Science & Technology | Cosmic Research

The Matter with Dark Matter

How do scientists know there's a mysterious substance called "dark matter" that dominates our universe? An astrophysicist explains.

Science & Technology | Cool Stuff

Exclusive: We may have detected a new kind of gravitational wave

Rumours are swirling of a new kind of gravitational wave, created by colliding neutrons stars, rather than black holes. Now Hubble has joined the hunt

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Was It All Just Noise? Independent Analysis Casts Doubt On LIGO's Detections

The LIGO team just recently announced their third robust event, consistent with merging black holes. But an unexplained effect might mean this isn't signal, but simply noise instead.

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New theory explains gravity better than Einstein's relativity

Dark matter and dark energy aren't needed to explain large-scale gravitational movements under the new theory.

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Looking For Higher Dimensions In Gravity - Forbes

Some theories predict the existence of higher dimensions. With sensitive gravitational experiments we can test that idea.

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Hunt Continues for Gravitational Waves from Black Hole Megamergers

The sound of merging supermassive black holes does not saturate the universe.

Science & Technology | Cosmic Research

The 12 Greatest Challenges for Space Exploration | WIRED

From space madness to crash landings, here's how we'll beat the 13 most difficult challenges to space exploration.

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A Radical Reinterpretation of Einstein’s Theory — NOVA Next | PBS

A cadre of physicists working on the theory of shape dynamics could change our understanding of reality.

Science & Technology | Cosmic Research

Are Space and Time Discrete or Continuous? - The Nature of Reality — The Nature of Reality | PBS

Split a mile in half, you get half a mile. Split the half mile, you get a quarter, and on and on, until you’ve carved out... Read Full Post

Science & Technology | Cool Stuff

Detecting Ripples in Space-Time, with a Little Help from Einstein

It is an observatory of immense scale — two enormous detectors separated by the bulk of the American continent — but that's what's needed for LIGO to ultimately catch black holes colliding and the explosions of stars.

Science & Technology | Cool Stuff

Here's How Long It Would Take To Fall Through The Center Of Earth

Just how long would it take to fall through the center of the Earth, traveling from one side of our planet to the other? Physicists have long calculated the answer to that question as being 42 minutes, but now, new calculations show that the theo...

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Pulsar Observed Wobbling Out Of Space Time - Vanishing Out Of Our Now

Pulsar Observed Wobbling Out Of Space Time - Vanishing Out Of Our Now - amazing astronomical event witnessed by scientists on Earth...

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Physicists propose identification of a gravitational arrow of time

(Phys.org) —A trio of physicists is proposing a new direction for understanding the concept of time. In their paper published in the journal Physical Review Letters, Julian Barbour, of College Farm in the U.K., Tim Koslowski of the University of New Bru

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Quantum Gravity and the Holographic Mass