Albert Einstein

A unified Theory Of Everything is the holy grail of physics, but gravity refuses to play ball. A newly proposed theory attempts to unify Einstein’s theory of gravity with quantum mechanics – and importantly, outlines a way to test it experimentally.

Scientists have manipulated light as though it was being influenced by gravity. By carefully distorting a photonic crystal, the team was able to invoke “pseudogravity” to bend a beam of light, which could have useful applications in optics systems.

A six-page autograph manuscript by Albert Einstein entitled "The Essence of the Theory of Relativity" is being auctioned tonight, and scientific voyeurs can watch all the fun as the heavy-hitters come out to play, as the sale will be live online.

Wormholes are a sci-fi staple, and and it's possible that they exist in the real universe. But how would they work? Physicists have now used a quantum processor to simulate a traversable wormhole, teleporting information between two quantum systems.

The flow of time isn’t as consistent as we might think – gravity slows it down, so clocks on Earth tick slower than those in space. Now researchers have measured time passing at different speeds across just one millimeter, the smallest distance yet.

Why is the expansion of the universe accelerating? The leading hypothesis is a repellent force that astrophysicists refer to as “dark energy." But how does it work? What does it mean for our future? And how sure are we that it even exists?

Faster-than-light “warp drives” may be theoretically possible, but they usually involve exotic physics well out of our reach. Now an astrophysicist has outlined a hypothetical design that could allow FTL travel using conventional physics.

Almost 30 years of observations has revealed that a star in the center of the galaxy orbits the supermassive black hole Sagittarius A* in a rosette, or spirograph shape. The find once again confirms a prediction made by Einstein’s General Relativity.

Even 100 years after the theory of general relativity, new observations keep confirming its predictions. Now, Australian astronomers have found that high-density stars in close orbit appear to be dragging and twisting the fabric of spacetime itself.

Astronomers have studied the ringing tones of a newly-created black hole for the first time, proving Einstein right once again.

Quantum entanglement is an eerie concept that Einstein himself had trouble accepting, and yet it’s been experimentally demonstrated. To find out whether there are other variables, a new experiment provides the strongest evidence so far of quantum entanglement or a 12-billion year “conspiracy."

Another day, another detection of gravitational waves. LIGO has just detected gravitational waves for the fourth time, but it wasn’t alone this time: the signals were also measured by the Virgo detector in Italy, marking a new milestone in the observation of the Universe.