dark energy

Astronomers believe they may have found a link between two mysterious phenomena that make up the universe - dark matter and dark energy.

Until now, the proposed dark energy state of DNA was a little like the dark matter in the universe ? there was no direct way of probing it.

At the moment, many researchers believe that dark energy may be a foam of quantum particles that exists throughout the vacuum of space.

a very interesting physical interpretation of the dark energy can be obtained as a vacuum energy , from the following line of reasoning.

"So far, the greatest achievement with dark energy is giving it a name, " Turner said of the elusive force.

Supernovae studies have allowed scientists to see that dark energy has been impacting galaxies since as far back as nine billion years ago.

Without the dark energy needed to explain the acceleration, the universe would have only a quarter of the necessary density.

Scientists trying to explain the universe's accelerating expansion usually point to dark energy, which seems to be pushing everything apart.

Debate about the exact nature of the dark side of the Universe - the dark matter and dark energy - continues to this day.

So to understand the evidence for dark energy, we need to discuss something that Stephen Hawking referred to in the previous session.

In terms of dark matter, I said that we don't have any, you know, really persuasive argument for dark energy.

As for dark energy, physicists do not know what it is, let alone how to calculate how much information it can store.

Dark energy is even more of a challenge: it comes neither from known particles nor from the empty space between them.

Yet for a void to be completely indistinguishable from dark energy, it would have to have some very strange properties indeed.

"For one, the Hubble Space Telescope has weighed in on dark energy by virtue of the measurements of supernovae, " he said.

Every time we turn our back on another, judge or condemn, we contribute to the dark energy in this world, even when it's done in God's name.

As if the mysteries of dark matter and dark energy weren't vexing enough, another baffling cosmic puzzle has been discovered.

A few years ago he tried a similar trick, breaking apart space and time in an attempt to explain dark energy.

The balance, once the small amount of visible matter is subtracted, is made of even more mysterious stuff known as "dark energy" .

So far, one of the biggest challenges for dark energy researchers is marrying observations to theory.

Whether dark energy has retained its value throughout the history of the universe is an important clue to its nature.

And at this point, he joked, any physicist's explanation for dark energy is probably good enough to consider.

The source of this cosmic antigravity is thought to be some new form of "dark energy" associated with empty space.

These observations placed more meaningful constraints on theories for what the dark energy could be.

it is impossible to tell whether the amount of dark energy around has remained constant, or has changed over the course of time.

One way to measure properties of dark energy is to measure the number of structures that have formed for a given amount of dark matter.

Dark energy is the name given to whatever mysterious force is causing the universe to accelerate as it expands.

When people think badly, they create the dark element, dark energy and woe to us.

The informal economy, it's sort of like dark energy in astrophysics.

These Hubble observations show for the first time that dark energy has been a present force for most of the universe's history.

They discovered that this growth is stifled in exactly the way that dark-energy theory predicts.

Just as they called the mysterious accelerating stuff dark energy, they call this mysterious gravitating stuff dark matter.

The lack of a good explanation for dark energy hasn't seemed to dampen scientists' enthusiasm for it.

The void is still thought to contain dark energy, though, and is clearly traversable by light.

And there are three space-based telescopes that are in competition right now to be launched to investigate dark matter and dark energy.

The so-called "dark energy" is the state of virtual substance in radiation , "dark material" is static virtual substance.

The team used these data to quantify the strength of the dark energy that is causing our universe to accelerate.

Dark energy causes the acceleration by pushing space itself apart, altering the distances to the supernovas as it does so.

This fall, NASA and the Department of Energy plan to invite proposals for a $600 million satellite mission devoted to dark energy.

The test also lends support for dark energy, the mysterious force that appears to be pushing the universe apart.

These results strongly imply the existence of a dubbed component with negative pressure, which is named as dark energy.

Furthermore, the parameterized equations of state of dark energy and the deceleration parameters are constrained from recent observations.

Dark energy is a mysterious force that speeds up the expansion of the Universe.

Understanding the nature of dark energy is one of the biggest problems in science.

The findings could help astronomers understand more about dark matter, as well as its even stranger sibling ? dark energy.

The finding may help shed light on an even more bizarre aspect of the universe ? dark energy.

Their calculations, when combined with data from other methods, significantly increase the accuracy of dark energy measurements.

Back in the real world, though, astronomers are happy with the challenges dark energy poses today.

Knowing the distribution of dark energy tells astronomers that the Universe will continue to get bigger indefinitely.

For the time being, no other instrument is as vital to the hunt for distant supernovae to pin down dark energy.

Dark energy is one of the few cases in nature that really requires us to use both sets of rules.

The rest of the pie is a very mysterious substance called dark energy.

Weinberg made the comments while speaking at a dark energy workshop at the Space Telescope Science Institute in Baltimore.

This vast and mysterious dark energy appears to gravitationally repel all matter and hence will likely cause the universe to expand forever.

Eli thinks their portals are string-based, similar to our Calabi-Yau model, but they've failed to factor in dark energy equations.

Ironically, the very pervasiveness of dark energy is what made it so hard to recognize.

Therefore the BAO technique helps constrain cosmological parameters and provide further insight into the nature of dark energy.

Dynamical Equations for the Scale Factor, a - Including Ordinary Matter, Dark Matter, and Dark Energy.

Their results showed that when dark energy and dark matter were linked, the model more closely predicted the clusters' behaviour.

THE ANCIENT SUPERNOVAE also provided new clues about dark energy, the underlying cause of the cosmic speedup.

The most likely reason: a mysterious cosmic force known as dark energy.

Dark energy fills space and pushes everything apart, making the universe expand at a faster and faster rate.

Only theories stipulating large variations in dark energy density have been ruled out.

Dark energy's true nature remains a mystery. Theoretical attempts to account for its observed properties have foundered.

Finally, ideas are presented for calculating the amounts of dark matter and dark energy, and possibly relating them to laboratory data.

Another possibility is that dark energy is an artifact of the mathematical approximations that cosmologists routinely use.

If dark energy is an inherent part of space, the density should remain constant.

his coverage of the cosmological constant, dark energy and the expansion of the universe is a model of clarity.

One possibility is there is no dark energy, and gravity works differently than scientists think.

Scientists report that only 4 per cent of the universe is visible. The rest is unknown dark matter and "dark energy" .

Much effort focuses on how the density of dark energy changes as space expands.

If dark energy does exist, then it ultimately causes the expansion of the Universe to accelerate.

James Williams investigates the mysteries behind another dark force in the universe: dark energy.

Dark energy makes up three-quarters of our Universe but is totally invisible.

Dark energy is a mysterious repulsive force that opposes gravity, causing universe to expand.

The term "dark energy" was coined by the theoretical cosmologist Michael S. Turner.

Even more surprising, measurements show that dark energy accounts for about 74 percent of the substance of the universe.

Where gravity pulls things together at the more local level, dark energy tugs them apart on the grander scale.

Evidently, dark energy can't have been much stronger than it is today lest it prevent matter from coalescing to form galaxies.

Salamon also stressed that current NASA missions have already played a key role in measuring dark energy.

Dark energy shoves galaxies away from each other at ever-increasing speeds and works in opposition to gravity.

Around three-quarters is "dark energy" , which creates a force that is speeding up the expansion of the universe.

Dark energy is a repulsive force opposing gravity. It is thought to influence how dark matter clumps together.

The accelerated expansion has been attributed to the energy of space-time itself, dubbed dark energy.

Weirder still is a recent discovery that dark energy has been around for most of the history of the cosmos.

Scientists attribute the phenomenon to dark energy, a force that repels gravity.

When it came time for one physicist to discuss new ideas about dark energy, he showed a blank screen.

If you hold negative thoughts, your chakras become dirty with dense, dark energy.

Dark energy, however, is an unknown unknown.

Matter, energy and dark energy all produce curvature in space-time, however.

Matter, energy and dark energy all produce curvature in space-time, however.

Dark energy basically works against gravity in a tug-of-war.

Gravity Bomb: Charges the target with dark energy (the gravity well), causing them to explode and pull in nearby allies after 9 sec .

It has been labelled "dark energy" , but that is really physicists' shorthand for "we haven't got a clue" .

With dark energy, "nature is giving us a hint of how it does quantum gravity, " Riess says.

Scientists named this mysterious force dark energy.

It has been labelled "dark energy" , but that is really physicists' short-hand for "we haven't got a clue" .

Both dark energy and cosmology have become hot issues in the research on the frontier ofscience worldwide.

Dark energy is a more daunting problem still.

Astronomers have developed a smorgasbord of other ways of tracking the effect of dark energy.

Well, about 23 percent is something called dark matter. The remaining 72 percent is a mysterious pervasive force called dark energy.

Dark energy is also a convenient explanation for another curiosity.

In Chapter Four, we discuss black hole area quantization under the condition of dark energy.

With these results, scientists concluded that the cosmos is made up of 4% normal matter, 22% dark or invisible matter and 74% dark energy .

In addition, the holographic dark energy model with varying gravitational constant is also discussed in this part.

Overall, dark energy is thought to contribute 73 percent of all the mass and energy in the universe.

The remaining 72 percent is a mysterious pervasive force called dark energy.

We call it dark energy, and it has this effect of causing space to expand.

And the prime evidence for dark energy doesn't come from the cosmic microwave background, either.

What is dark energy? The big questions facing physics.

What dark energy is, though, is a mystery.

According to the big bang model, our universe is made up of around 4% of normal (atomic) matter; 22% dark matter and 74% dark energy.

So in quantum mechanics, of course, you have dark energy and dark matter.

What is known is that dark energy constitutes about three quarters of the Universe.

This is BEcause gravity is more powerful than dark energy, so the galaxies can't BE pushed apart.

We've had all kinds of surprises: dark matter, dark energy, inflation, things like that.

We're exploiting a beautiful phenomenon in nature to learn more about the role that dark energy plays in our universe.

According to the latest numbers, the proportions are 4. 56% ordinary matter, 22. 7% dark matter, and 72. 8% dark energy.

That's progress, but we still have a long way to go to pin down the nature of dark energy.

IT IS hardly surprising that something called dark energy is hard to study. It is important, though.

Dark energy, on the other hand, is putting more and more space between the galaxies.

Einstein's cosmological constant and the dark energy of cosmos

Scalar-Field Model for Dark Energy with a Fixed Background Vector Field

Progress on the International Linear Collider released, proposed to explore dark matter and dark energy

A survey of 150, 000 galaxies confirms predictions about dark energy, thought to be what's driving galaxies apart. John Matson reports

Warping spacetime with dark energy is one solution [view slideshow]

Space Energy Density (Dark Energy, or Cosmological Constant)

Development of Galaxies, Planets, etc. Dark Energy Accelerated Expansion

Observational constraints on varying dark energy modelwith Ia supernova

The Unified Parametrized Model for Dark Matter and Dark Energy

A Brief Overview of Recent Theoretical Study on Dark Energy

Dark Matter and Dark Energy: A Guide to the Unseen Universe

The Problem of the Theory of Dark Energy

Seven Potion of Universe Is Dark Energy

Dark matter and dark energy in the universe

Dark Matter, Dark Energy, and the Structure of the Universe

Dark energy and de Sitter space

The Birth of Dark Energy