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Thursday, June 23, 2011

NASA’s Cassini–Huygens spacecraft has discovered evidence for a large-scale saltwater reservoir beneath the icy crust of Saturn’s moon Enceladus. The data came from the spacecraft’s direct analysis of salt-rich ice grains close to the jets ejected from the moon. The study has been published in this week’s edition of the journal Nature.

Data from Cassini’s cosmic dust analyzer show the grains expelled from fissures, known as tiger stripes, are relatively small and usually low in salt far away from the moon. Closer to the moon’s surface, Cassini found that relatively large grains rich with sodium and potassium dominate the plumes. The salt-rich particles have an “ocean-like” composition and indicate that most, if not all, of the expelled ice and water vapor comes from the evaporation of liquid salt-water. When water freezes, the salt is squeezed out, leaving pure water ice behind.

Cassini’s ultraviolet imaging spectrograph also recently obtained complementary results that support the presence of a subsurface ocean. A team of Cassini researchers led by Candice Hansen of the Planetary Science Institute in Tucson, Arizona, measured gas shooting out of distinct jets originating in the moon’s south polar region at five to eight times the speed of sound, several times faster than previously measured. These observations of distinct jets, from a 2010 flyby, are consistent with results showing a difference in composition of ice grains close to the moon’s surface and those that made it out to the E ring, the outermost ring that gets its material primarily from Enceladean jets. If the plumes emanated from ice, they should have very little salt in them.

“There currently is no plausible way to produce a steady outflow of salt-rich grains from solid ice across all the tiger stripes other than salt water under Enceladus’s icy surface,” said Frank Postberg, a Cassini team scientist at the University of Heidelberg in Germany.

The data suggests a layer of water between the moon’s rocky core and its icy mantle, possibly as deep as about 50 miles (80 kilometers) beneath the surface. As this water washes against the rocks, it dissolves salt compounds and rises through fractures in the overlying ice to form reserves nearer the surface. If the outermost layer cracks open, the decrease in pressure from these reserves to space causes a plume to shoot out. Roughly 400 pounds (200 kilograms) of water vapor is lost every second in the plumes, with smaller amounts being lost as ice grains. The team calculates the water reserves must have large evaporating surfaces, or they would freeze easily and stop the plumes.

“We imagine that between the ice and the ice core there is an ocean of depth and this is somehow connected to the surface reservoir,” added Postberg.

The Cassini mission discovered Enceladus’ water-vapor and ice jets in 2005. In 2009, scientists working with the cosmic dust analyzer examined some sodium salts found in ice grains of Saturn’s E ring but the link to subsurface salt water was not definitive. The new paper analyzes three Enceladus flybys in 2008 and 2009 with the same instrument, focusing on the composition of freshly ejected plume grains. In 2008, Cassini discovered a high “density of volatile gases, water vapor, carbon dioxide and carbon monoxide, as well as organic materials, some 20 times denser than expected” in geysers erupting from the moon. The icy particles hit the detector target at speeds between 15,000 and 39,000 MPH (23,000 and 63,000 KPH), vaporizing instantly. Electrical fields inside the cosmic dust analyzer separated the various constituents of the impact cloud.

“Enceladus has got warmth, water and organic chemicals, some of the essential building blocks needed for life,” said Dennis Matson in 2008, Cassini project scientist at NASA’s Jet Propulsion Laboratory in Pasadena, California.

“This finding is a crucial new piece of evidence showing that environmental conditions favorable to the emergence of life can be sustained on icy bodies orbiting gas giant planets,” said Nicolas Altobelli, the European Space Agency’s project scientist for Cassini.

“If there is water in such an unexpected place, it leaves possibility for the rest of the universe,” said Postberg.

Wednesday, May 4, 2005

NASA‘s Mars Reconnaissance Orbiter (MRO), the latest robotic spacecraft destined for Mars, arrived at Kennedy Space Center‘s Shuttle Landing Facility on April 30 aboard a C-17 cargo plane and was delivered to the Payload Hazardous Servicing Facility to begin processing. Launching is scheduled for August 10, 2005.

With a mission time line through 2010, the MRO will conduct studies of the Martian atmosphere, surface and subsurface in far greater detail than previous missions. Possible landing sites for future Mars landings will be evaluated and the orbiter will also act as a high-data-rate communications relay for surface missions.

“Great work by a talented team has brought Mars Reconnaissance Orbiter to this milestone in our progress toward a successful mission,” said Jim Graf of NASA’s Jet Propulsion Laboratory (JPL) project manager for the mission.

Multiple mechanical assembly operations and electrical tests are scheduled to verify the craft’s readiness for launch. A May test to verify communication abilities through NASA’s Deep Space Network will be conducted and in June deployment of the high gain communications antenna will be tested. A deployment test is also scheduled for the Orbiter’s large solar arrays.

The MRO will be filled with hydrazine fuel in July for its “Mars orbit insertion burn” which reduces the craft’s velocity and places it in orbit about the red planet. July 26 will see the Mars Reconnaissance Orbiter installed in an Atlas V rocket fairing for final assembly with the rocket on July 29.

After the scheduled launch, the MRO will spend seven months cruising to Mars and another six months aerobraking after orbital insertion. A variety of scientific instruments on board will be used to search for geological evidence of past seas, ancient shorelines.The craft was built near Denver by Lockheed Martin Space Systems which also supplies the Atlas V launch vehicle.

The Mars Reconnaissance Orbiter mission is managed by JPL, a division of the California Institute of Technology, Pasadena, for the NASA Science Mission Directorate, Washington. Lockheed Martin Space Systems is the prime contractor for the project. International Launch Services, a Lockheed Martin joint venture, and Lockheed Martin Space Systems are providing launch services for the mission.

More information about the Mars Reconnaissance Orbiter is available at: Mars Reconnaissance Orbiter website

A compilation of brief news reports for Wednesday, December 23, 2009.

Monday, December 2, 2013

Police in the West Midlands in England today said nearly 200 kilograms worth of drugs with value possibly as great as £30 million (about US$49 million or €36 million) has been seized from a unit in the town of Brownhills. In what an officer described as “one of the largest [seizures] in the force’s 39 year history”, West Midlands Police reported recovering six big cellophane-wrapped cardboard boxes containing cannabis, cocaine, and MDMA (“ecstasy”) in a police raid operation on the Maybrook Industrial Estate in the town on Wednesday.

The seized boxes, which had been loaded onto five freight pallets, contained 120 one-kilogram bags of cannabis, 50 one-kilogram bags of MDMA, and five one-kilogram bricks of cocaine. In a press release, West Midlands Police described what happened after officers found the drugs as they were being unloaded in the operation. “When officers opened the boxes they discovered a deep layer of protective foam chips beneath which the drugs were carefully layered”, the force said. “All the drugs were wrapped in thick plastic bags taped closed with the cannabis vacuum packed to prevent its distinctive pungent aroma from drawing unwanted attention.” Police moved the drugs via forklift truck to a flatbed lorry to remove them.

Detective Sergeant Carl Russell of West Midlands Police’s Force CID said the seizure was the largest he had ever made in the 24 years he has been in West Midlands Police and one of the biggest seizures the force has made since its formation in 1974. “The impact this seizure will have on drug dealing in the region and the UK as a whole cannot be underestimated”, he said. “The drugs had almost certainly been packed to order ready for shipping within Britain but possibly even further afield. Our operation will have a national effect and we are working closely with a range of law enforcement agencies to identify those involved in this crime at whatever level.”

Expert testing on the drugs is ongoing. Estimates described as “conservative” suggest the value of the drugs amounts to £10 million (about US$16.4 million or €12 million), although they could be worth as much as £30 million, subject to purity tests, police said.

Police arrested three men at the unit on suspicion of supplying a controlled drug. The men, a 50-year-old from Brownhills, a 51-year-old from the Norton area of Stoke-on-Trent in Staffordshire, and one aged 53 from Brownhills, have been released on bail as police investigations to “hunt those responsible” continue. West Midlands Police told Wikinews no person has yet been charged in connection with the seizure. Supplying a controlled drug is an imprisonable offence in England, although length of jail sentences vary according to the class and quantity of drugs and the significance of offenders’ roles in committing the crime.

Tuesday, June 12, 2007

That Singapore and Brunei are today marking 40 years of currency interchangeability with a special banknote might come as a shock to some.

And it’s not the part about the special banknote, it’s that the two small southeast Asian countries have had interchangeable currencies for 40 years.

Singaporean Senior Minister Goh Chok Tong admits that not a lot of Singaporeans know about it, and that currency from Brunei is routinely refused by Singaporean retailers.File:Brunei 2006 circulating coins.jpg

“They are not used to seeing Bruneian currency,” Goh said at a press conference yesterday in Bandar Seri Begawan, the capital of Brunei. He added that he sees the need to educate Singaporean retailers “again and again” on the matter.

Maybe, said Goh, if more money from the tiny, oil-rich sultanate on Borneo was spent in the island republic of Singapore, there would be change.

“If Bruneians spend a lot of money in Singapore, and you have millions of Brunei dollars floating around, there’ll be no problem. So the retailers see the currency, they are not familiar with it,” Goh said.

“So from time to time, we have to tell the retailers that there is an interchangeable agreement with Brunei and the currency must be accepted,” Goh continued.

The 40th anniversary banknote will be an important tool in educating Singaporeans about current interchangeability, Goh said.

“It is a way to tell Singaporeans and also Bruneians that we have these interchangeable currencies… If the currency is not accepted just tell the retailer and explain to them that there is no problem, that they are acceptable to banks,” Goh said.

However, while the Monetary Authority of Singapore and the Brunei Currency and Monetary Board will issue the notes into general circulation, it will be a limited issue.

“I think it will become a collectors’ item,” Goh said. “Because it’s the first time we are doing this in 40 years, I think collectors would not circulate them. But it is meant for circulation and can be used like any currency note,” he said.

The front of commemorative note has scenes from both Brunei and Singapore, while the reverse bears Singapore’s coat of arms and the face of Hassanal Bolkiah, Sultan of Brunei. Goh said he thought the design is “very attractive.”

The two countries have maintained currency interchangeability since 1967, when the Singapore dollar and the Brunei dollar replaced the Malaya and British Borneo dollar as legal tender in those countries.

Goh was in Brunei to attend yesterday’s royal banquet, put on by the Sultan of Brunei, on the occasion of the sultan’s daughter’s wedding.

Princess Majeedah Nuurul Bulqiah, 31, 11th daughter of the sultan, and Khairul Khalil, 32, exchanged their vows last Thursday, and were presented to the public on Sunday in a lavish, two-week ceremony steeped in Brunei royal and Muslim tradition.

Tuesday, May 2, 2006

Beginning Monday morning, many BlueFrog and Blue Security users began receiving an email warning them that if they did not remove their email addresses from the Blue Security registry, they would begin to receive huge amounts of unsolicited email. As quickly as four hours after the initial warning message, some users began to receive an unprecedented amount of spam. Most of the messages were simply useless text. Users reported that Blue Security’s website was unavailable or extremely slow in responding.

Blue Security is an online community dedicated to fighting spam. As they became more popular, their member list increased substantially. The members’ email address is encrypted and added to a list of e-mail addresses that wish to stop receiving spam. Blue Security maintains the encrypted list, which uses an encrypted hash function. Spammers are encouraged to remove all addressed from their email list that are also in Blue Security’s Do Not Intrude Registry by using free compliance tools available at Blue Security’s web site.

According to Blue Security’s web site, “A major spammer had started spamming our members with discouraging messages in an attempt to demoralize our community. This spammer is using mailing lists he already owns that may contain addresses of some community members.” Reportedly, Blue Security has received complaints from users about spam allegedly sent from Blue Security promoting their anti-spam solution and web site.

Blue Security states they are “an anti-spam company determined to fight spam and as such never has and never will send unsolicited email.” There are also reports of non-users of BlueSecurity/BlueFrog receiving the warning emails, which now seems is also being sent to email addresses of people who have never added their email address to Blue Security’s Do Not Intrude Registry.

Saturday, April 17, 2010

In a new setback to the Thai government’s efforts to ease mounting political tensions, protest leaders escaped from their hotel Friday after security forces arrived to arrest them.

One, Arisman Pongruangrong, climbed down three floors using a rope, and was rushed away by supporters thronging the building. The police say Arisman led recent rallies at the national parliament, the election commission, and satellite transmission bases.

Officials earlier Friday said the government is preparing to arrest people linked to violent clashes with security forces last Saturday.

Deputy Prime Minister Suthep Thaugsuban, Thai security chief, announced the raid on the hotel as it was unfolding, saying that a Special Forces unit had closed in around a downtown Bangkok hotel.

“As I am speaking, the government’s special team is surrounding the SC Park Hotel, where we have learned that there are terrorists and some of their leaders hiding,” Suthep said.

A spokesman for the governing Democrat Party, Baranuj Smuthararaks, says arrest warrants have been issued for those suspected of being involved in the violence. Some of the suspects have been identified from photos taken during the clashes.

“Right now the government’s focusing on issuing warrants for acts of terrorism by the people who fortunately have been captured in action [in photos] by both the local and international media,” he said.

According to the New York Times, as many as five protest leaders had been staying at the same hotel as Pongruangrong. Those leaders later appeared together at a protest rally in Bangkok.

“I would like to thank all of the people who saved me,” Arisman said. “You have saved democracy.”The government says armed men infiltrated protester ranks Saturday and fired on troops trying to disperse a rally. Five soldiers and 19 protesters died during the clashes.

Thailand is facing its most severe political crisis in almost 20 years. The anti-government movement, led by the United Democratic Front against Dictatorship or UDD, demands that the government step down and call fresh elections.

UDD supporters, known as red shirts, have held protests in Bangkok for more than a month.

The UDD largely supports former Prime Minister Thaksin Shinawatra, who was ousted in a coup in 2006 and remains overseas to avoid a jail sentence for corruption. Mr. Thaksin has strong support among the rural and urban poor, as well among some sections of the army and police.

Some parties in the governing coalition want to set a clear time frame for elections to ease tensions. But the government says it will only call elections once the political situation has cooled.

Monday, January 18, 2010

The Benet Academy Redwings boys basketball team defeated the Oswego High School Panthers 40–34 Saturday night at Benet’s historic Alumni Gym. 

Located at Lisle, Illinois, United States, the gymnasium is home to Benet’s winning streak of 102 consecutive home games. The statewide record lasted from November 26, 1975 until January 24, 1987, when Naperville North High School defeated the Redwings 47–46. Benet also achieved 96 consecutive victories in the Western Suburban Catholic Conference at that time. 

The school continued to use the facility, colloquially referred to as the “Old Gym” or the “Small Gym”, until the end of the 1994 season, when a newer athletic center was built on campus. It wasn’t until the late 1990’s when then-coach Marty Gaughan decided to play one game per year in the Alumni Gym to remind the school of its history. “There is just an electricity, and you feel it when you are in there,” said Gaughan, who coached the team from the 1989–1990 season to the 2007–2008 season. 

This tradition continued until the 2006–2007 season, when the Redwings played against long-time rival St. Francis High School. Renovations prevented the gym from being used for athletic events over the past two seasons. This game was Benet coach Gene Heidkamp’s first opportunity to coach in the older gym. “So much history and winning has taken place there, which makes it so special. It is something the entire school community is excited about,” said Heidkamp. 

Saturday’s game was played at the Alumni Gym at the request of Oswego assistant coach Jim Bagley. He wanted his son, senior forward Chris Bagley, to experience the same atmosphere he had as he played for Benet in the 1978–1979 season. Greg Kwiatkowski was also Jim Bagley’s teammate in Benet, and his son, Joe Kwiatkowski, was in the Panthers’ starting lineup as well. “Two of us who played at Benet together and now our son’s play on [Oswego] together and for them to have a chance to play where we played is going to be a great night and great experience,” said the senior Bagley. 

Alumni Gym apparently still had its charm in the second half for the Redwings, whose 15–17 score at halftime worsened into an 11-point deficit in the third quarter. Benet fell behind with a score of 21–29 at the start of the fourth quarter. From that point, the Redwings’ defense began to kick in. Oswego could make only 2 of its 13 field goals in the third quarter. Benet’s offense also gained momentum as center Frank Kaminsky scored all of his 9 points in the fourth quarter. A shot by senior Mike Runger brought the score to 31–31, and two consecutive driving layups by David Sobolewski gave Benet the lead that would last for the rest of the game. 

“We hit a dry spell there, but let’s give credit where credit is due. Defense wins games and they are the best defensive team we’ve faced all year,” said Oswego coach Kevin Schnable.

Benet’s Matt Parisi led his team with 15 points, and Sobolewski scored 12. Oswego’s Andrew Ziemnik also scored 12. 

Wednesday, June 8, 2005

An airline stowaway, possibly of Senegalese origin was found dead this morning by U.S. customs and NY Port Authority personnel, his body badly mangled by the landing gear of a South African Airways aircraft.

A Nassau County woman returned home from work to find part of the man’s leg lying on her lawn.

The identity and nationality of the man are not yet known. The flight on which he stowed away originated in Johannesburg, South Africa and made one stopover in Dakar, Senegal.