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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...

Scientists have developed a system that absorbs 99.7% of sound - ScienceAlert

A new system developed by scientists at the Hong Kong University of Science and Technology is capable of absorbing almost all the sound that hits it - 99.7 percent of that sound, to be precise. The new set-up uses not one but two resonators, tuned to vibrate at whatever the frequency of the acoustic waves they're being hit with.


In a galaxy far, far away, two black holes are dancing around each other, drawn together by each others’ immense gravity. Eventually the two may collide, triggering a blast with the power of 100 million star explosions.

That won’t happen for at least 100,000 years, and its effect on Earth will be subtle. The black hole duo is located about 3.5 billion light-years away, but the encounter will send out ripples in the space-time continuum that will allow scientists to better study the theory of general relativity.

Physicists figure out how to make 'molecules' of pure light - ScienceAlert

Physicists have just gotten us a little closer to the dream of building objects out of pure light - hello, lightsabers - by figuring out how to join weightless light particles together to form a kind of ‘two-atom molecule’ with its own, strange type of force. .

First Massive Binary Star Found Where Both Stars Have Magnetic Fields

A binary star is a star system consisting of two or more stars, orbiting around their common center of mass. Matt Schulz, a PhD candidate, has discovered the first occurence of a binary star where both stars have magnetic fields. The binary star which he discovered is called epsilon Lupi.

Sagan-Inspired Movie "Star Stuff" Makes The Universe Feel a Lot Bigger

A young Carl Sagan comes to vivid life in “Star Stuff,” a short film by Croatian film director Ratimir Rakuljic. It offers a moving re-enactment of how a young boy from Brooklyn with an insatiable appetite for wonder and science grew up to become a beloved iconic figure in science communication and outreach.

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