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.

Thursday, August 27, 2015

Austrian police today found an estimated 20–50 decomposing corpses in an apparently abandoned lorry.

Roadworkers who spotted the vehicle, which had been there since yesterday at least, alerted police. Responding officers found it full of corpses. The lorry is on the so-called “Eastern Motorway”, the A4, close to the Hungarian border. It was on the hard shoulder between Neusiedl and Parndorf, closer to Parndorf.

The victims are thought to have suffocated. Police are seeking the driver. The Krone published an image of a non-articulated food lorry on the hard shoulder, which they report is the vehicle in question. The photo shows a pool of dark liquid on the ground beside the vehicle.

Video from a passing motorist shows at least one helicopter on-scene. The truck, which has pictures of meat on the side, shows branding for Slovakian food firm Hyza. Earlier today the company’s website sported an apparent anti-immigration graphic, which has since been removed.

Wikinews got in touch with Hyza. “We are truly sorry about [the] tragedy” they told us in a statement. They said they have checked GPS trackers on their fleet and all their vehicles remain in Slovakia. The statement says the lorry in question was one of 21 Hyza vehicles sold on last year. It was then sold again and exported to Hungary, where it is now registered. Hyza told us the new owners have not changed the branding on the vehicle. According to the Bild newspaper, Agrofert — the parent company of Hyza — said in a statement the new owners were required to do so.

Hyza says they will “actively cooperate with Slovak police”, and “express [their] sincere condolences to the bereaved families.”

Interior Minister Johanna Mikl-Leitner called it “a dark day” and called for European Union-wide measures to protect immigrant refugees and tackle human traffickers. Neighbouring Hungary is constructing a border fence across its entire frontier with Serbia. Yesterday alone saw a record 3,241 attempts to enter Hungary illegally, according to authorities there.

Conflict in Syria and other parts of the world has led refugees to Europe. Once inside, they can move freely inside the Schengen Area, which covers most of the EU.

Austrian police earlier this week arrested three motorists suspected of people smuggling. One driver is accused of moving 34 people, ten of them children, into Austria from Serbia. The group were left by the roadside near Bruck an der Leitha and reported struggling to breathe in the van.

Wednesday, June 20, 2007

The Canada Border Services Agency (CBSA) and the Royal Canadian Mounted Police (RCMP) announced Tuesday that they had seized approximately 160 kilograms of cocaine discovered in buckets of frozen mango puree imported from Mexico.

Investigations led the police to a shipping container destined for the Port of Montréal, in the Canadian province of Québec. A CBSA officer at the Container Examination Centre in Montréal identified the suspect container. The drug was found in brick-shaped plastic wrapping of about 4 kilograms in weight each. There were 1,200 buckets of frozen mango puree in the shipment, not all with cocaine inside.

RCMP Sgt. André Potvin told reporters that the value of the shipment was significant and was the largest maritime port drug haul in the force’s history. At CA$20 per half-gram, “that’s in the vicinity of $38 million,” said Potvin.

The investigation by the RCMP Drug Section, CBSA Intelligence officers, the Marine Security Enforcement Team and the Port of Montréal Security Group, determined that an import company, named Quality Mexport, was allegedly a front for the drug-smuggling operation.

Five Mexicans, holding visitor status in Canada, were arrested in the matter. They are:

• Juan Manuel Huerta Canela, 31;
• Jose Gerardo Bernal Vasquez, 52;
• Jose Luis Navarro Ochoa, 33;
• Jesus Manuel Villa Quiroz, 32; and
• Alfonso Strag Estrada, age 50.

The suspects have been charged with importing and possession of drugs for the purpose of trafficking. The charges are allegations at this point in time.

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Due to the damage by Hurricane Katrina and subsequent flooding, a number of colleges and universities in the New Orleans metropolitan area will not be able to hold classes for the fall 2005 semester. It is estimated that 75,000 to 100,000 students have been displaced. [1]. In response, institutions across the United States and Canada are offering late registration for displaced students so that their academic progress is not unduly delayed. Some are offering free or reduced admission to displaced students. At some universities, especially state universities, this offer is limited to residents of the area.