Omnia M. Sedek

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What Is Reality? [Official Film]

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The Black Hole That Birthed the Big Bang

In his Allegory of the Cave, Greek philosopher Plato described prisoners who have spent their entire lives chained to the wall of a dark cavern. …

New Theory Suggests That We Live In The Past Of A Parallel Universe

Whether through Newton's gravitation, Maxwell's electrodynamics, Einstein's special and general relativity or quantum mechanics, all the equations that best describe our universe work perfectly if time flows forward or backward.<p>Of course the world we experience is entirely different. The universe …

Dark Matter

When the End is Just the Beginning: Exploring Cosmic Cycles - The Nature of Reality — The Nature of Reality | PBS

This is how it all could end: heat death, the moment when the universe expends its last drop of usable energy and settles into lifelessness. Like the …

Journey Into the Dark Realm - The Nature of Reality — The Nature of Reality | PBS

After nearly a century of observations, astronomers have concluded that the type of matter that makes up you and me amounts to just a scant 5% of the …

APOD: Aurora over Maine (2014 Sep 17) Image Credit & Copyright: Jeremy P. Gray http://apod.nasa.gov/apod/ap140917.html Explanation: It has been a good week for auroras. Earlier this month active sunspot region 2158 rotated into view and unleashed a series of flares and plasma ejections into the Solar System during its journey across the Sun's disk. In particular, a pair of Coronal Mass Ejections (CMEs) impacted the Earth's magnetosphere toward the end of last week, creating the most intense geomagnetic storm so far this year. Although power outages were feared by some, the most dramatic effects of these impacting plasma clouds were auroras seen as far south as Wisconsin, USA. In the featured image taken last Friday night, rays and sheets of multicolored auroras were captured over Acadia National Park, in Maine, USA. Since another CME plasma cloud is currently approaching the Earth, tonight offers another good chance to see an impressive auroral display. http://www.jeremypgrayphotography.com/about.html Starship Asterisk* • APOD Discussion Page http://asterisk.apod.com/discuss_apod.php?date=140917 #APOD

Will We Ever Know the True Nature of Dark Energy? - The Nature of Reality — The Nature of Reality | PBS

You know that dream where you’re about to take a final exam, only to realize that you have neglected to study and, moreover, to put on pants? I …

How Many Dimensions Does the Universe Really Have? - The Nature of Reality — The Nature of Reality | PBS

An engineer, a mathematician and a physicist walk into a universe. How many dimensions do they find?<p>The engineer whips out a protractor and …

What Are Gravitons? - The Nature of Reality — The Nature of Reality | PBS

In a contest for the least contentious statement a person can make, “What goes up must come down” is surely a strong contender. Of the four known …

Video: What is Gravity Made Of? - The Nature of Reality — The Nature of Reality | PBS

<i>Editor’s note: New data have cast doubt on the interpretation of the BICEP2 data. For an update on this story, read Inflation, Elation, Deflation:</i> …

Are White Holes Real? - The Nature of Reality — The Nature of Reality | PBS

Sailors have their krakens and their sea serpents. Physicists have white holes: cosmic creatures that straddle the line between tall tale and …

Quantum Harmonies: Modern Physics and Music - The Nature of Reality — The Nature of Reality | PBS

The universe is built on harmonies. The Pythagoreans had it right when they married mathematics, music, and the cosmos. Just as mathematical patterns …

Who's Afraid of Quantum Mechanics? - The Nature of Reality — The Nature of Reality | PBS

Is quantum mechanics less spooky than advertised?<p>That’s the question being mulled in the blogosphere after last month’s three-day writers’ workshop …

Great Discoveries Channel

Catastrophic end-of-our-universe scenarios proposed by physicists at Kazan Federal University include the Big Rip during which matter of the Universe …

Curtain closing on Higgs boson photon soap opera

It was the daytime soap opera of particle physics. But the final episode of the first season ends in an anticlimax. The Higgs boson’s decay into …

Einstein makes an appearance in superheavy chemistry

When chemistry goes superheavy, things start to get weird. Researchers have created the first chemical compound that requires Einstein’s theory of …

Mother of Higgs boson found in superconductors

A weird theoretical cousin of the Higgs boson, one that inspired the decades-long hunt for the elusive particle, has been properly observed for the …

Stringy fields may make the universe swell faster

DARK energy, the mysterious force thought to be responsible for the fact the universe’s expansion is accelerating, might come from a series of exotic …

Dark Matter

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Black Holes May Explode Into 'White Holes' And Pour All Their Matter Into Space, Physicists Say

Black holes might end their lives by transforming into their exact opposite — 'white holes' that explosively pour all the material they ever swallowed into space, say two physicists. The suggestion, based on a speculative quantum theory of gravity, could solve a long-standing conundrum about …

FYI: Can Anything Move Faster Than Light?

Yes, the universe itself will eventually outpace the speed of light. Just how this will happen is a bit complicated, so let's begin at the very beginning: the big bang. Around 14 billion years ago, all matter in the universe was thrown in every direction. That first explosion is still pushing …