But unlike dark energy, there are several ideas about what it might be, and one of them is the subject of a second paper, in Physical Review Letters, by Peter Biermann of the University of Bonn, in Germany, and Alexander Kusenko, of the University of California, Los Angeles.
The papers were all published in well-known journals, including a second Nature paper, Nature Medicine, and 4 separate papers in Circulation.
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Taking a second sheet of paper and a roll of Scotch tape, he taped his scene together, but broken: a Cubist vision of Highway 49.
Digital delivery means readers outside the New York area no longer face a choice between paying more for the Times or settling for a second-rate local paper like, say, the Gainesville Sun.
One machine uses hundreds of chips, each with 188 custom processors, to move 1.2 trillion bits a second, the printed-paper equivalent of 150 pickup truck loads.
Nokia's imaging chief Damian Dinning has released a paper explaining the "second phase" of PureView technology that's included in the new Lumia 920.
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Although the News of the World was Britain's second biggest paper, with a circulation of 2.6m, this was a far cry from the more than 9m it sometimes sold in the 1950s.
Lee told the court last month that a parallel line imprint found on murder victim Ron Goldman's jeans, an envelope, a piece of paper and on the tile walkway could have been made by a second set of shoe prints.
For that reason alone, the government deserves a cheer for publishing a white paper this week setting out its second stage of reforms.
The popular pet fish can jump up to eight times their body length, at speeds of more than 4 feet per second, according to a recently published research paper in the online peer-reviewed journal PLOS One.
The second step is overcoming the misconception that creating a paper trail is a waste of valuable time.
And of course computers are extremely fast, so they can perform more calculations in a second than you could in a lifetime using pencil and paper.
The second inspection took place in 2007 and was a paper exercise where inspectors largely based their judgment that things had improved and were now "good" on information and figures provided by Haringey.
On the subject of a referendum, Lord Wallace made clear that "a single question was the preferred position of the UK government", rather than a second question on further devolution being included on the ballot paper.
The first scrutineer unfolds the ballot, notes the name on a piece of paper, and passes the ballot to the second scrutineer.
The satirical paper has also reported Steve Jobs is working on a second-generation iPhone, making this one already ridiculously outdated.
The second paper also failed to find statistically significant weight loss in a similar study on teens, except for one subgroup.
Those who've chewed know that a decent amount of cake can be left behind in the carefully pleated paper, and chewing it can satiate the desire for a second cupcake.
Mr Lerwell said that he and Mr Lilley had not given the incident a second thought afterwards until he saw themselves in video stills in a local paper some weeks later.
Ankit Kumar, a materials science and engineering graduate student at UCLA Engineering was the paper's second author.
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Second row Greg Rawlinson is also expected to put pen to paper on a new one-year contract as his current deal runs out at the end of the season.
The company now faces a police-bribery probe at a second tabloid, the Sun, which has resulted in the arrest of several of the paper's top journalists.
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