Science & Technology | Cool Stuff

Milky Way's Black Hole Provides Long-Sought Test of Einstein's General Relativity - Scientific American

Scientific American is the essential guide to the most awe-inspiring advances in science and technology, explaining how they change our understanding of the world and shape our lives.

Entertainment | Star Wars

Did Han Solo Use A Trick Of Einstein's Relativity To Make The Kessel Run?

As the new Star Wars movie, Solo, premieres, let's look at the physics of how his most famous achievement might actually be possible.

Science & Technology | Cool Stuff

Experiment shows Einstein's quantum 'spooky action' approaches the human scale

We usually think of quantum entanglement in the realm of atomic systems, but now it's been scaled up to relatively massive objects. This opens the door to new kinds of technology.

Science & Technology | Cool Stuff

The Most Important Equation In The Universe

Just one equation relates the expansion of space to all the matter and energy we have. If you know this, you can know the fate of the Universe.

Science & Technology | Cool Stuff

Hubble Telescope Discovers a Light-Bending 'Einstein Ring' in Space

The perfect circle surrounding a galaxy cluster in a new Hubble Space Telescope image is a visual indicator of the huge masses that are bending time and space in that region.

Science & Technology | Cool Stuff

The Puzzle Of Quantum Reality

Despite the incredibly accurate predictions of quantum theory, there's a lot of disagreement over what it says about reality — or even whether it says anything at all about it, says guest Adam Becker.

Science & Technology | Physics & Cosmology

The Three Meanings Of E=mc^2, Einstein's Most Famous Equation

From matter, antimatter and energy to the fundamental truths about existence, Einstein's most famous equation is the link you can't forget.

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

10 Spacetime Mysteries That Quantum Gravity Could Solve

We travel through spacetime every day, but still don't really know how it works.

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.

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

Science & Technology | Cool Stuff

Gravitational Lensing Provides Rare Glimpse Into Interiors of Black Holes

The observable Universe is an extremely big place, measuring an estimated 91 billion light-years in diameter. As a result, astronomers are forced to rely on powerful instruments to see faraway objects. But even these are sometimes limited, and must be paired with a technique known as gravitational lensing.

Science & Technology | Cool Stuff

Ripples In Spacetime: From Einstein To LIGO And Beyond

There's a new book out on gravitational waves, and it covers the history, science, people, and possibilities unlike any other.

Science & Technology | Cool Stuff

Space breakthrough: Scientists teleport photon from Earth to orbit

For the first time, scientists have successfully teleported a photon from the ground to a satellite in orbit.

Science & Technology | Cool Stuff

Does Dark Energy Exist? Einstein's General Relativity Could Rid Us of the Need for Universe's Most Mysterious Force

A renewed suggestion that dark energy may not be real—dispensing with 70 percent of the stuff in the universe—has reignited a longstanding debate. Dark energy and dark matter are theoretical inventions that explain observations we cannot otherwise und

Science & Technology | Cool Stuff

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.

Science & Technology | Cool Stuff

LIGO detects more gravitational waves, from even more ancient and distant black hole collisions

These ripples in the very fabric of the universe were hypothesized by Einstein a century ago. Now scientists have detected them for the third time in a year and a half – ushering in a new era in astrophysics.

Science & Technology | Cool Stuff

Giant ring of galaxies scattered during Andromeda flyby challenges Einstein's theory of gravity

A huge ring of galaxies spanning 10 billion light years is challenging Albert Einstein's theory of gravity. In two papers, one published in the Monthly Notices of the Royal Astronomical Society and the other currently under review, scientists observed th

Science & Technology | Cool Stuff

Quantum Physics: Are Entangled Particles Connected Via An Undetected Dimension?

Are entangled particles connected via another dimension, since they continue to be connected and a reflection of each other regardless of distance? This question was originally answered on Quora by Allan Steinhardt.

Science & Technology | Cool Stuff

Physicists prove Einstein still wrong about quantum mechanics with record-breaking trapped ion tests

Physicists from a US government agency have made a breakthrough in proving that quantum mechanics can indeed be explained by classical physics, as well as showing that trapped ions could be the best method for reliably creating quantum entanglement, which

Science & Technology | Cool Stuff

Quantum Physics News: Entangled Photons Can Originate From Different Points In Space

For the longest time, scientists thought that entangled particles emerged from the same point in space. New observations challenge this belief.

Science & Technology | Cool Stuff

Astronomers are set to peer into a black hole and take a picture of its event horizon

Ever since first mentioned by Jon Michell in a letter to the Royal Society in 1783, black holes have captured the imagination of scientists, writers, filmmakers and other artists. Black holes are regions of space inside which the pull of gravity is so st

Science & Technology | Science

The Universe Is as Spooky as Einstein Thought - The Atlantic

In a brilliant new experiment, physicists have confirmed one of the most mysterious laws of the cosmos.

Science & Technology | Cool Stuff

A theory that challenges Newton's and Einstein’s gravity and nixes dark matter passed its first test — Quartz

Margot Brouwer of Leiden University is brave—and you need to be, if you're challenging Albert Einstein and Isaac Newton in one fell swoop. Brouwer and her colleagues believe that the laws of gravity, as determined by Newton and further expanded by Einst

Science & Technology | Cool Stuff

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.

Science & Technology | Cool Stuff

Gravitational Waves May Permanently Alter Spacetime

Finding evidence of gravitational-wave memory could help solve the black hole information paradox.

Science & Technology | Cool Stuff

Entangled Particles Reveal Even Spookier Action Than Thought

This finding comes from a close look at quantum entanglement, in which two particles that are "entangled" affect each other even when separated by a large distance. Now, researchers have found that even if they were to scrap this theory, allowin

Science & Technology | Cool Stuff

Einstein's clock: The doomed black hole to set your watch by | New Scientist

Every 12 years, a black hole at the centre of a distant galaxy completes an orbit around an even bigger black hole, marking this with a violent outburst

Science & Technology | Cool Stuff

How Does Light Travel? - Universe Today

Since ancient times, scientists have debated the true nature of light. Despite the progress we've made, there are still mysteries left to be resolved

Science & Technology | Cool Stuff

A five-dimensional black hole could 'break' general relativity

Five-dimensional black holes would contain gravity so intense, the laws of physics as we know them would fall apart.

Science & Technology | Cool Stuff

6 Things You Probably Didn't Know About Gravitational Waves | WIRED

There are so many cool aspects of LIGO's detection of gravitational waves. Here are six ideas for you to consider.

Science & Technology | Cool Stuff

Hold Up, Did We Just Crack Time Travel? - The Daily Beast

Astrophysicists famously proved Einstein’s theory on the existence of gravitational waves last week. Here’s the less covered part of it all: It might, down the line, bring us closer to moving through time.

Science & Technology | Cool Stuff

Einstein was right: Scientists detect gravitational waves

Albert Einstein’s Theory of Relativity passes a big test: Scientists have direct evidence of gravitational waves, ripples in the fabric of space and time.

Science & Technology | Cool Stuff

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 | Cool Stuff

Einstein Is Right About General Relativity — Again

Using planetary orbits, physicists have confirmed with amazing precision Einstein's theory of general relativity.

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

How Quantum Randomness Saves Relativity

Albert Einstein is famous for two things in physics: the theory of relativity, and hating the randomness of quantum physics. Which makes it delightfully ironic that the latter is needed to preserve the former.

Science & Technology | Cool Stuff

Do We Need to Rewrite General Relativity? - The Nature of Reality

General relativity, the theory of gravity Albert Einstein published 100 years ago, is one of the most successful theories we have. It has passed every experimental... Read Full Post

Science & Technology | Cosmic Research

Has NASA Really Created A Warp Drive?

Forget blowing bubbles, NASA may be on the path to discovering warp bubbles that will open up every corner of the universe for human exploration. We have broken the speed of sound, but now NASA scientists are tentatively announcing they may have broken t

Science & Technology | Cool Stuff

Einstein's Theory of General Relativity: A Simplified Explanation

Albert Einstein determined that massive objects cause a distortion in space-time, which is felt as gravity.

Science & Technology | Cool Stuff

We now have the technology to really test Einstein's theory of relativity

A century after Einstein presented his theory of relativity, scientists have the technology to begin looking for evidence that could reveal physics beyond it.

Science & Technology | Cool Stuff

Four ways to break the universe's speed limit

When Albert Einstein first showed that light travels the same speed everywhere in the universe, he essentially stamped a speed limit on our universe: 670,616,629 miles per hour.

But that's not the entire story. In fact, it's just the beginning.

Science & Technology | Cool Stuff

Einstein's "Time Dilation" Prediction Verified - Scientific American

Physicists have verified a key prediction of Albert Einstein’s special theory of relativity with unprecedented accuracy. Experiments at a particle accelerator in Germany confirm that time moves slower for a moving clock than for a stationary one.

Science & Technology | Cool Stuff

New Time Travel Simulation May Resolve 'Grandfather Paradox'

On June 28, 2009, the world-famous physicist Stephen Hawking threw a party at the University of Cambridge, complete with balloons, hors d'oeuvres and iced champagne. Everyone was invited but no one showed up. Hawking had expected as much, because he ...

Science & Technology | Cool Stuff

Seeing Coldest Blobs in the Universe in New Light

Physicists have come up with a new way to gaze longingly at some of the weirdest matter on Earth — the super-cold, super-calm gas called a Bose-Einstein condensate. While scientists have been able to steal quick glimpses of the unusual gas, until now, s