Dr Majewski and his colleagues are now looking at other parts of the halo to see whether they contain worms too, and if so, whether these can be traced to other satellite galaxies of the Milky Way.
To calculate performance, Tian looked at whether firms would go public and if they did, whether or not they delisted within three years.
Before departure, he said, find out whether your phone will work at your destination, and if so, whether you can activate the international roaming access function that would allow you to receive and make calls.
However, a few days later, several Fed governors were out with statements that indicate there is considerable debate going on within the Fed about whether another round of easing is necessary, and if so whether it would work this time or not.
So, this weekend, head to your local bookstore and ask them whether they sell ebooks and, if you want to support them, sign up to buy ebooks from them versus buying them elsewhere.
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One who is wondering whether to stay in teaching - and whether to move, if he does so - is Paul Whiting.
The quest is by men and women trying to understand whether economies will grow and, if so, why and to whose benefit.
"We want to see if market timing and late trading have enriched mutual fund companies, penalized investors who weren't involved and if so how and whether it can be quantified, " says Peter Harvey, the New Jersey attorney general.
The baseline assumption then becomes whether or not you believe in a God, and if so, whether that God might be active in our world.
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Consider whether some staff need to work undisturbed and, if so, whether it's possible to allocate space or rooms for quiet work.
Cricket keeps an off-field umpire for boundary calls, and to ascertain whether batsmen are run out, and if catches are real.
For years, some policymakers and scientists doubted whether temperatures were rising, and, if they were, that greenhouse gas emissions were to blame.
As is often the case in foreign-corruption probes by the FBI, investigators are trying to establish whether any overseas units of News Corp. engaged in corrupt acts or bribery, and, if so, whether those acts were part of a pattern of corruption that reached across countries and business units, people familiar with the investigation said.
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As in America, there is disagreement both within the industry and among politicians about whether special aid is needed and, if so, what form it should take.
It is unclear whether indictments will be issued against its members and, if so, whether the police will then try to arrest them.
Traders and investors continue to debate whether QE3 will be implemented, and if so when.
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Any interest from Ibrox would be dependent on whether Lorenzo Amoruso leaves and if Dundee's Zura Khizanishvilli cannot be tempted to joint the Scottish champions.
He also said that it also has folding chairs available should patrons need them, and that it did not know whether Kessman had tried that option and if not, why not.
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At virtually every turn of the bureaucracy residents are asked if they smoke and, if so, whether they would like to attend a free cessation program.
He asked whether any of us in the room had trading software on our machines and, if so, whether we were inclined to use it.
They ask whether you made payments in 2011 that required you to issue Forms 1099, and if you did, whether you issued all the requisite forms.
After all, questions Congress expected to have answered about whether folks in uniform would support the law's repeal and, if it occurs, whether they would leave the military were not even asked.
No decision has yet been made on whether to release the photographs and if so, when and how.
Whether these are worthwhile, and if military service is the best way to create them, are questions for politicians, not economists.
As a result, he supplies no information about whether customers are being delighted and if not, what is being done about it.
Mr Hill said he had written to Justice Secretary Chris Grayling to ask whether the rumours were true and if so, requesting his input in the decision-making process.
Uncertainty once again is plaguing Lehman Brothers, this time with questions swirling about whether it will be bought and if its CEO will see the company to 2009.
And whether to halt, if not reduce, our regulatory burden?
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Like whether female-led companies are growing, whether their revenues are healthy and if the banks are approving the oh-so-critical business loans needed to get an idea off the ground.
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