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.

Friday, November 11, 2005

The U.S. Senate has adopted an amendment, proposed by Senator Lindsey Graham (R–SC), to a defense bill limiting detainees’ court privileges.

The amendment would make the Combat Status Review Tribunal (CSRT) statutory law, the Annual Review Board (ARB) statutory law, require the designated civilian officer to be a government official who is appointed by the President with the advice and consent of the Senate, not allow the preponderance of evidence against a detainee be derived from undue coercion, and remove Guantanamo prisoners’ right to file habeas corpus petitions in federal courts.

In regards to the habeas corpus provision, the amendment specifically states, “No court, justice, or judge shall have jurisdiction to hear or consider an application for a writ of habeas corpus filed by or on behalf of an alien outside the United States (as that term is defined in section 101(a)(38) of the Immigration and Naturalization Act (8 U.S.C. 1101(a)(38)) who is detained by the Department of Defense at Guantanamo Bay, Cuba.” [1]

The amendment passed with a 49-42 vote. Five Democrats jumped party lines to vote for and four Republicans jumped party lines to vote against the amendment. Nine Senators, seven Republicans and two Democrats, did not vote on the amendment. Kent Conrad, Mary Landrieu, Joseph Lieberman, Ben Nelson, and Ron Wyden were the Democrats who voted for the amendment. Arlen Specter, Lincoln Chafee, Gordon Smith, and John Sununu were the Republicans who voted against the measure.

Senator Graham is quoted as saying, “The president has established procedures to determine who is an enemy combatant and to annually review their status. It’s now time for Congress to sign-off on these procedures and turn them into a statute, a move the courts will give great deference to.”

It should be noted that under Graham’s amendment, detainees would be able to challenge only the narrow question of whether the procedures established by the Secretary of Defense at the time the military determined their status as an enemy combatant were followed. The Court of Appeals for the DC circuit would still retain the ability to rule on that question.

Civil liberties groups as well as human rights groups issued statements opposing the amendment. “The Graham amendment will create a thousand points of darkness across the globe where the United States will be free to hold people indefinitely without a hearing and beyond the reach of U.S. law and the checks and balances of the courts enshrined in our Constitution,” the Center for Constitutional Rights said in a statement.

“The Graham amendment would strip all courts, including the Supreme Court, of jurisdiction to consider habeas corpus petitions or any other action challenging any aspect of the detention of foreign detainees held at Guantanamo Bay, except for the narrow question of whether status review boards follow their own rules,” said a press release from the American Civil Liberties Union.

Saturday, September 3, 2016

On Wednesday, English football club Manchester City F.C. announced that they had loaned their goalkeeper Joe Hart to Italian club Torino F.C. till the season end.

Hart joined City from Shrewsbury Town F.C. in 2006. Since then, he has won four Premier League Golden Gloves for keeping most clean sheets in a season, which is a League record. In a decade at the Etihad Stadium, Hart has won two Premier League trophies, two Football League Cups and one FA Cup.

Hart debuted for England at the age of 21, and has represented the country at UEFA Euro 2012 and 2016 and FIFA World Cup 2014.

Signing the contract, Hart said, “I am very excited to compare myself in an important and beautiful League such as Serie A.” ^{((it))Italian language: ?Sono molto felice di potermi confrontare in un campionato bello e difficile come la Serie A.}

Goalkeeper Joe Hart’s move away from Manchester City came about a week after Pep Guardiola signed Chilean goalkeeper Claudio Bravo from FC Barcelona.

Saturday, August 25, 2007

The leading supplier of school uniforms in the United Kingdom, Lancashire-based manufacturer Trutex, has announced it is “seriously considering” including GPS tracking devices in future ranges of its uniform products after conducting an online survey of both parents and children.

“As a direct result of the survey, we are now seriously considering incorporating a [tracking] device into future ranges” said Trutex marketing director Clare Rix.

The survey questioned 809 parents and 444 children aged nine to 16. It showed that 44% of parents were worried about the safety of pre-teen children, and 59% wanted tracking devices installed in school apparel. 39% of children aged nine to 12 were prepared to wear clothing with tracking devices in them, while teenagers were notably less enthusiastic and more wary of what Trutex has admitted they see as a “big brother” concept.

However, Trutex has claimed the tracking devices would bring about worthwhile benefits, including being a valuable resource for parents who wanted to keep a close eye on where their children were at all times.

“As well as being a safety net for parents, there could be real benefits for schools who could keep a closer track on the whereabouts of their pupils, potentially reducing truancy levels” says Rix.

Each year, Trutex supplies 1 million blouses, 1.1 million shirts, 250,000 pairs of trousers, 20,000 blazers, 60,000 skirts and 110,000 pieces of knitwear to the UK.

It is not the first company to manufacture school uniforms with a central focus on child safety; last week Essex firm BladeRunner revealed it was selling stab-proof school blazers to parents concerned about violence against their children. The blazers were outfitted with Kevlar, a synthetic fibre used in body armour. It has already received orders internationally, including Australia.

If the Trutex tracking devices go ahead, it is unclear where in the uniform they will be located.

Saturday, September 8, 2007

Ford Motor Company, the U.S. car maker, will reportedly pay €57 million (US$78 million) for a 72.4 percent stake in the Romanian assembly plant Automobile Craiova, a Romanian official said Friday.

“The offer of Ford Motor Company for a 72.4 percent stake is €4.1556 per share or €57 million overall,” said Sebastian Vladescu, head of the State Property Agency (AVAS), after opening Ford’s improved offer. Vladescu added that the contract may be signed on September 12, during the auto show in Frankfurt.

The Romanian government bought back the Craiova-based car maker from Daewoo Motors, in late 2006 for US$51 million. As the Korean company was bankrupt, the government had to pay another $10 million for debts stemming from past loans. Ford is the only bidder for the purchase of the factory.

According to Washington Post, many auto-part makers have set up in the new European Union member country, attracted by cheap labor, favourable tax rates and the rising output of Renault’s Dacia plant. The vice president of Dacia, Constantin Stroe, said that the price Ford offers is not important. “It’s important to have the factory working as soon as possible”, he added. “With this production facility, Romania will become an important auto production center in Europe”, concluded Stroe, cited by HotNews.

Monday, October 30, 2006

On November 13, Torontoians will be heading to the polls to vote for their ward’s councillor and for mayor. Among Toronto’s ridings is Etobicoke Centre (Ward 3). One candidate responded to Wikinews’ requests for an interview. This ward’s candidates include Doug Holyday (incumbent), Peter Kudryk, Lillian Lança, and Ross Vaughan.

For more information on the election, read Toronto municipal election, 2006.