They hope to work out what dark matter is by the simple expedient of taking a look at it.
"In this case, it will always be an open question until we can pin down what dark matter is made of, " he said.
CNN: Space station detector gives first clues to 'dark matter'
We know there is dark matter - but we have to understand what this dark matter is made of.
BBC: Dark Matter: Experiment to shed light on dark particles
There are several different ideas about what that dark energy might be, but more precise measurements of the universe are needed to figure out exactly what it is.
But even if this question is solved, it will not reveal what all dark matter consists of.
And eventually, they hope to nail down what exactly dark energy is.
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Hayden Christensen plays Anakin Skywalker, who is increasingly lured toward what he calls the dark side and what the rest of us would call frowning.
What truly makes Dark Souls difficult is its pervasive lack of hand-holding.
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Research is ongoing to figure out precisely what these "dark" components are, because they do not interact with ordinary matter and have never been directly detected.
CNN: Space station detector gives first clues to 'dark matter'
Figuring out what makes up dark matter is a big prize because it is the key to understanding the shape, size and even the fate of the universe.
Congress is largely in the dark about what the administration has been negotiating in the TPP.
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It's not as though he's operating in the dark regarding what his intelligence advisers think.
What followed was a dark era that, while not completely devoid of wins, corroded the foundation Knight had built.
This leaves women in the dark about what they face - and unable to develop a flexible approach to birth.
Since then, according to Val Bamber, the treasurer of the Lynmouth Road Allotments Association, allotment users have been "in the dark about what might happen".
The telecom execs claim they need lots of cash to build an infrastructure but forget to tell us that most of the investment has already been made in what's called dark fiber.
Ms Gunner Logan also said there was no transparency about what criteria the local authorities were using for procurement decisions and that voluntary sector organiastions were "still in the dark" about what their criteria are.
My what if scenario takes a dark view on gross margins for Samsung and Apple, the two big smartphone players.
BMW's board meeting, Stephen Byers, the trade and industry secretary, was still in the dark as to what Rover's parent would decide.
What if Thor: The Dark World and Captain America: The Winter Soldier end up being received by moviegoers as Avengers 3 and Avengers 4?
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The spectrum of light that emerges from such a container will show a series of dark lines interrupting what would be a continuous rainbow.
The French state extending into Africa to bring the benefits of commerce and Christianity to what all Europe considered the dark places of the world.
Aerial photographs from the descent show drainage channels apparently flowing off land into what seems to be a dark ocean, possibly composed of some tarry substance.
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For pathos, though, we still have Gollum, the damned and slimy soul (voiced again by Andy Serkis), who lurks in the dark and loses what he loves.
That kind of talk was common during what Iraqis call the "dark years" when the sectarian warfare was at its worst and al Qaeda and other extremists controlled swaths of the country.
Its operations director, Lesley Cowley, accepted that ISPs were trying to register schools while being in the dark as to what their domain names were, but said it was an inevitable overlap of timing.
"Part of the early stages of deciding what the forecasts would be were in the dark, in the sense that we didn't know exactly what every other country was going to do, " he said.
What we have to do for Dark Souls II is to stick to this consistent stance.
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