Published News Physics

Scientists are about to switch on a telescope that could photograph a black hole's event horizon

Black holes are among the most fascinating objects in the known Universe. But despite the fact that they're suspected to lurk at the centre of most galaxies, the reality is that no one has ever been able to actually photograph one.



That's because black holes, as their name implies, are very, very dark. They're so massive that they irreversibly consume everything that crosses their event horizon, including light, making them impossible to photograph....

Forget what you've learned - scientists just created a stable helium compound

While other noble gas elements have shown signs of forming compounds under extreme pressure, helium has remained firmly exclusive - until now. Scientists report creating what appears to be a stable helium-sodium compound, and it challenges some of the most basic assumptions of modern chemistry.


Physicists have found a metal that conducts electricity but not heat

Researchers have identified a metal that conducts electricity without conducting heat - an incredibly useful property that defies our current understanding of how conductors work.


Hydrogen turned into a metal for the first time. Technology and spaceflight might never be the same

By subjecting molecular hydrogen, a gas, to ungodly pressures higher than those found at the Earth’s core, Harvard researchers have accomplished the impossible: they’ve turned the lightest element into a metal. This is now the rarest and possibly the most expensive material on the planet. This may soon change as metal hydrogen moves from the stuff of alchemy to a critical resource in mankind’s quest of becoming an interstellar species.



 


Physicists created Black Hole in the lab that could finally prove Hawking Radiation

Stephen Hawking was the first to propose that not everything that comes in contact with a black hole succumbs to its immense gravity and inevitable nothingness. In fact, tiny particles of light, known as photons, are sometimes ejected back out of the black hole, robbing it of energy. This gradual loss of mass over time means that every black hole eventually evaporates out of existence.



hawking radiation


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Big News: Gravitational waves confirmed for the first time

Physicists have announced the discovery of gravitational waves, ripples in spacetime first anticipated by Albert Einstein a century ago. It's a huge deal, because it not only improves our understanding of how the Universe works, it also opens up a whole new way of studying it.

detecting gravitational wave

Image: V. Altounian/Science

The gravitational wave signal was detected...

Physicists hint at the first ever observations of gravitational waves

Earlier today, well-known American theoretical physicist Laurence Kraus tweeted that the results of a recent experiment looking for gravitational waves have finally been peer-reviewed and we just might have the first direct evidence that these light-speed ripples in the Universe actually exist.

gravitational waves

Credit: CSIRO

When Einstein published his general theory of relativity in 1915, he...

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