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Archive for the ‘physics’ category

Feb 12, 2016

We’ve finally found gravitational waves, so can we time travel?

Posted by in categories: cosmology, physics, time travel

Physicists working with a powerful observatory on Earth announced Thursday that they have finally detected ripples in space and time created by two colliding black holes, confirming a prediction made by Albert Einstein 100 years ago.

These ripples in the fabric of space-time, called gravitational waves, were created by the merger of two massive black holes 1.3 billion years ago. The Laser Interferometer Gravitational-Wave Observatory (LIGO) on Earth detected them on Sept. 14, 2015, and scientists evaluated their findings and put them through the peer review process before publicly disclosing the landmark discovery today.

SEE ALSO: Einstein was right: Scientists detect gravitational waves for the first time.

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Feb 11, 2016

Holy Shit! Scientists Have Confirmed the Existence of Gravitational Waves

Posted by in categories: cosmology, physics

Since Albert Einstein first predicted their existence a century ago, physicists have been on the hunt for gravitational waves, ripples in the fabric of spacetime. That hunt is now over. Gravitational waves exist, and we’ve found them.

That’s according to researchers at the Laser Interferometer Gravitational Wave Observatory (LIGO), who have been holed up for weeks, working round-the-clock to confirm that the very first direct detection of gravitational waves is the real deal. False signals have been detected before, and even though the rumors first reported by Gizmodo have been flying for a month, the LIGO team wanted to be absolutely certain before making an official announcement.

That announcement has just come. Gravitational waves were observed on September 14th, 2015, at 5:51 am ET by both of the LIGO detectors, located in Livingston, Louisiana, and Hanford, Washington. The source? A supermassive black hole collision that took place 1.3 billion years ago. When it occurred, about three times the mass of the sun was converted to energy in a fraction of a second.

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Feb 11, 2016

Interesting Physics Animation

Posted by in category: physics

Science has finally confirmed that Einstein was right — gravitational waves DO exist: http://engt.co/1PPNv4W

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Feb 11, 2016

Albert Einstein

Posted by in categories: physics, space

A landmark day for Einstein and our understanding of the universe: the detection of gravitational waves. World Science Festival’s own Brian Greene explains the discovery.

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Feb 11, 2016

Gravitational Waves

Posted by in category: physics

Scientists Have Confirmed the Existence of Gravitational Waves.


We just found gravitational waves!! Scientists at LIGO have confirmed!

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Feb 10, 2016

Black Holes Could Be Gateways After All

Posted by in categories: computing, cosmology, physics

Physicists can now simulate the interiors of black holes using high-powered computers–and it looks like science fiction authors were right: black holes could be portals for space travel.

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Feb 8, 2016

What Are Gravitational Waves And Why Do They Matter?

Posted by in category: physics

Physicists have been buzzing (or rather, tweeting) about the possibility that the Laser Interferometer Gravitational-Wave Observatory (LIGO) experiment finally discovered gravitational waves. LIGO has been searching for these cosmic ripples for over a decade. Last September, it upgraded to Advanced-LIGO, a more sensitive system that’s also better at filtering out noise. Advanced-LIGO has a much stronger chance of collecting concrete evidence of gravitational waves—if it hasn’t already.

Scientists may be excited, but talk of gravitational waves leaves most people scratching their heads. What are these cosmic vibrations, and why are they making waves in the scientific community?

Continue reading “What Are Gravitational Waves And Why Do They Matter?” »

Feb 8, 2016

China’s nuclear fusion machine just smashed Germany’s hydrogen plasma record

Posted by in categories: nuclear energy, physics

Just last week, we reported that Germany’s revolutionary nuclear fusion machine managed to heat hydrogen gas to 80 million degrees Celsius, and sustain a cloud of hydrogen plasma for a quarter of a second. This was a huge milestone in the decades-long pursuit of controlled nuclear fusion, because if we can produce and hold onto hydrogen plasma for a certain period, we can harness the clean, practically limitless energy that fuels our Sun.

Now physicists in China have announced that their own nuclear fusion machine, called the Experimental Advanced Superconducting Tokamak (EAST), has produced hydrogen plasma at 49.999 million degrees Celsius, and held onto it for an impressive 102 seconds.

While this is nowhere near the hottest temperature that’s been produced by an experiment — that honour goes to the Large Hadron Collider, which hit a whopping 4 trillion degrees Celsius (250,000 times hotter than the centre of the Sun) back in 2012 — the team from China’s Institute of Physical Science in Hefei managed to recreate solar conditions for well over a minute.

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Feb 8, 2016

Physicists Figure Out A New Property Of Superconductivity

Posted by in categories: physics, transportation

The finding could help scientists achieve reliable room-temperature superconductivity, which would help pave the way for innovations like levitating trains.

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Feb 2, 2016

South Pole’s next generation of discovery — By Carla Reiter | University of Chicago

Posted by in categories: astronomy, physics, science

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“Later this year, during what passes for summer in Antarctica, a group of Chicago scientists will arrive at the Amundsen–Scott South Pole research station to install a new and enhanced instrument designed to plumb the earliest history of the cosmos.”

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