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LOS ANGELES Emmanuel Mudiay Jersey , Oct. 22 (Xinhua) -- Scientists of the U.S. National Aeronautics and Space Administration (NASA) have just come up with a new model to help allocate scarce observing time to the most promising candidate planets beyond our solar system that might support life, according to a new research published this week in the Astrophysical Journal.

"Using a model that more realistically simulates atmospheric conditions, we discovered a new process that controls the habitability of exoplanets and will guide us in identifying candidates for further study," said Yuka Fujii of NASA's Goddard Institute for Space Studies (GISS), lead author of the study Dikembe Mutombo Jersey , in a statement.

NASA has been hot on the trail of Earth-like planets.

Previous studies were forced to rely on one-dimensional and vertical models to simulate atmospheric conditions. The new research uses a model that calculates conditions in all three dimensions, allowing scientists to simulate the circulation of the atmosphere and the special features of that circulation, which one-dimensional models cannot do, according to NASA.

Liquid water is essential to life as we know it. If the temperature of an alien world allows liquid water to be present for sufficient time to allow life to thrive, it is considered potentially habitable. If a planet is too distant from its star Carmelo Anthony Jersey , its surface water will freeze; if it is too close, its surface water will evaporate and be lost to space.

This happens when water vapor rises to a layer in the upper atmosphere called the stratosphere and gets broken into its elemental components, hydrogen and oxygen, by ultraviolet light from the star. The extremely light hydrogen atoms can then escape to space.

Planets in the process of losing their oceans this way are said to have entered a "moist greenhouse" state because of their humid stratospheres.

For exoplanets orbiting close to their parent stars, the team found that the near-Infrared radiation (NIR)-driven process could increase moisture in the stratosphere gradually. So Allen Iverson Jersey , it is possible, contrary to old model predictions, that an exoplanet closer to its parent star could remain habitable.

The new approach demonstrated that since these stars emit the bulk of their light at NIR wavelengths, a moist greenhouse state will result even in conditions comparable to or somewhat warmer than Earth's tropics, researchers say.

In the future Alex English Jersey , the team plans to vary those planetary characteristics, such as gravity, size, atmospheric composition and surface pressure to see how they affect water vapor circulation and habitability.

UNITED NATIONS, June 9 (Xinhua) -- UN Secretary-General Ban Ki- moon on Monday strongly condemned Sunday's terror attacks in Pakistan Custom Denver Nuggets Jersey , including an assault on a Karachi airport and suicide attacks targeting Shiite pilgrims, and urged the Pakistani government to boost efforts to fight terrorism and religious extremism.

"The secretary-general is deeply concerned by this upsurge of violence across Pakistan," said the statement issued here by Ban's spokesman.

"While acknowledging the measures already taken to maintain security, he urges the government of Pakistan to further increase its efforts to address terrorism and religious extremism, including with a view to protecting the rights of all people to safely practice their religion Cheap Denver Nuggets Jerseys , and to bring the perpetrators of such attacks to justice," the statement said.

"The secretary-general expresses his solidarity with the government and the people of Pakistan and extends his deepest condolences to the families of the victims," the statement said.

The assault on Jinnah International Airport in the southern city of Karachi began just before midnight when at least 10 heavily armed militants disguised as security forces stormed the terminal building after lobbing hand grenades and opening fire at security personnel.

The Taliban on Monday morning claimed responsibility for the attack that killed at least 19 people, saying that it was launched in retaliation for military operations on their hideouts in the northwestern tribal areas of the country.

Taliban spokesperson Shahidullah Shaid called the attack as a revenge for the killing of former Taliban chief Hakimulla Mehsud in a U.S. drone strike in November last year and vowed to conduct more such attacks in the future.

In separate, unrelated violence Nuggets Wilson Chandler Jersey , suicide attacks against Shiite pilgrims killed at least 24 people in the southwestern province of Balochistan.

Officials said the attackers hurled two hand grenades at two buses parked outside a hotel in the Taftan area of Chaghi, a district near the Pakistan-Iran border, before shooting with automatic guns. No group or militant organization has claimed responsibility for the attacks.

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