Although the process seems to be responsible for building Saturn's E ring, "it is doubtful that Saturn's main rings are generated in a similar manner," Pappalardo says.
The league hasn't resolved that pickle (the station was looking to profit by selling commercials against its six-figure rights fee) but it's doubtful that CBS's Channel 2 and NBC's Channel 4 in New York will not carry the game to accommodate Channel 9.
Even though President Mugabe's security forces have violently cracked down on Zimbabwe's main opposition party and its leader, Morgan Tsvangirai, ahead of Friday's election, it is doubtful that this will be enough to keep Mugabe in power going forward.
Anyway, despite Mr Romney's support, it's doubtful the extension will get past congressional Republicans, who no doubt have even more important constituencies to buy off.
Without cooperation from Brazil, South America's largest economy, it is doubtful that the Bush administration could achieve its goal of extending the North American Free Trade Agreement to the entire hemisphere, especially with the growing protests against the agreement in the United States.
As president, Zardari is theoretically commander in chief of Pakistan's military, but it is doubtful he has much real authority over its nuclear arsenal at this stage.
IT'S doubtful the Spanish explorer Juan Cabrillo was thinking "family friendly" when he spotted Monterey Bay in 1542.
It's doubtful that Nickell's experiment convinced many believers.
IT'S doubtful that anyone ever sat on the front stoop and vowed -- with a jingle of the charm bracelet, a wave of the sunglasses -- that she was going to be a muse when she grew up.
But it is doubtful, given Italy's military weakness, whether Italian neutrality would have stopped Hitler.
It is doubtful if Bruening's successor can sustain himself without the support of the National Socialists.
