An unidentified flying object (UFO) forced Xiaoshan Airport in Hangzhou, China to cease operations on July 7. A flight crew preparing for descent first detected the object around 8:40 p.m. and notified the air traffic control department. Aviation authorities responded within minutes, grounding outbound flights and diverting inbound ones to airports in Ningbo and Wuxi.

Eighteen flights were affected. Though normal operations resumed an hour later, the incident captured the attention of the Chinese media and sparked a firestorm of speculation on the UFO’s identity.

“It is a hidden U.S. bomber flying toward China,” one Internet user wrote on Monday. Another wrote on Sunday night, “In my opinion, the UFO is neither a U.S. missile nor a Russian satellite. Suggestions that it is extraterrestrial are even more preposterous. Everyone, use your head. This is clearly a man-made phenomenon. Would the U.S. or Russia risk provoking China’s anger by firing a missile or satellite rocket in Chinese skies, without warning? I believe the Chinese military is responsible for the UFO. It is a new missile or aircraft being tested out.”

Source: ABC News

by Staff Writers

Pasadena CA (JPL) Jun 29, 2010
NASA’s plucky Voyager 2 spacecraft has hit a long-haul operations milestone – operating continuously for 12,000 days. For nearly 33 years, the venerable spacecraft has been returning data about the giant outer planets, and the characteristics and interaction of solar wind between and beyond the planets.Among its many findings, Voyager 2 discovered Neptune’s Great Dark Spot and its 450-meter-per-second (1,000-mph) winds.

The two Voyager spacecraft have been the longest continuously operating spacecraft in deep space. Voyager 2 launched on August 20, 1977, when Jimmy Carter was president. Voyager 1 launched about two weeks later on Sept. 5.

The two spacecraft are the most distant human-made objects, out at the edge of the heliosphere – the bubble the sun creates around the solar system. Mission managers expect Voyager 1 to leave our solar system and enter interstellar space in the next five years or so, with Voyager 2 on track to enter interstellar space shortly after that.

Having traveled more than 21 billion kilometers (13 billion miles) on its winding path through the planets toward interstellar space, the spacecraft is now nearly 14 billion kilometers (9 billion miles) from the sun. A signal from the ground, traveling at the speed of light, takes about 12.8 hours one-way to reach Voyager 2.

Voyager 1 will reach this 12,000-day milestone on July 13, 2010 after traveling more than 22 billion kilometers (14 billion miles). Voyager 1 is currently more than 17 billion kilometers (11 billion miles) from the sun.

Source: Space Travel

Media

* People were right about themselves just half the time

* Technique might enhance advertising, education efforts

By Maggie Fox, Health and Science Editor

WASHINGTON, June 22 (Reuters) – Brain scans may be able to predict what you will do better than you can yourself, and might offer a powerful tool for advertisers or health officials seeking to motivate consumers, researchers said on Tuesday.

They found a way to interpret “real time” brain images to show whether people who viewed messages about using sunscreen would actually use sunscreen during the following week.

The scans were more accurate than the volunteers were, Emily Falk and colleagues at the University of California Los Angeles reported in the Journal of Neuroscience.

“We are trying to figure out whether there is hidden wisdom that the brain contains,” Falk said in a telephone interview.

“Many people ‘decide’ to do things, but then don’t do them,” Matthew Lieberman, a professor of psychology who led the study, added in a statement.

But with functional magnetic resonance imaging or fMRI, Falk and colleagues were able to go beyond good intentions to predict actual behavior.

FMRI uses a magnetic field to measure blood flow in the brain. It can show which brain regions are more active compared to others, but requires careful interpretation.

Falk’s team recruited 20 young men and women for their experiment. While in the fMRI scanner they read and listened to messages about the safe use of sunscreen, mixed in with other messages so they would not guess what the experiment was about.

“On day one of the experiment, before the scanning session, each participant indicated their sunscreen use over the prior week, their intentions to use sunscreen in the next week and their attitudes toward sunscreen,” the researchers wrote.

After they saw the messages, the volunteers answered more questions about their intentions, and then got a goody bag that contained, among other things, sunscreen towelettes.”

“A week later we did a surprise follow up to find out whether they had used sunscreen,” Falk said in a telephone interview.

About half the volunteers had correctly predicted whether they would use sunscreen. The research team analyzed and re-analyzed the MRI scans to see if they could find any brain activity that would do better.

Activity in one area of the brain, a particular part of the medial prefrontal cortex, provided the best information.

“From this region of the brain, we can predict for about three-quarters of the people whether they will increase their use of sunscreen beyond what they say they will do,” Lieberman said.

“It is the one region of the prefrontal cortex that we know is disproportionately larger in humans than in other primates,” he added. “This region is associated with self-awareness, and seems to be critical for thinking about yourself and thinking about your preferences and values.”

Now, Falk said, the team is looking for other regions of the brain that might add to the accuracy of the technique.

While the findings can be important for advertisers seeking to hone a motivational message, they can be equally important for public health experts trying to persuade people to make healthier choices, Falk said.

The team is now preparing a report on experiments to predict whether people would quit smoking after seeing motivational messages.

(Editing by Sandra Maler)

Source: Reuters

Britain could face widespread power blackouts and be left without critical communication signals for long periods of time, after the earth is hit by a once-in-a-generation “space storm”, Nasa has warned.

By Andrew Hough

National power grids could overheat and air travel severely disrupted while electronic items, navigation devices and major satellites could stop working after the Sun reaches its maximum power in a few years.

New findings have roused a great deal of hoopla over the possibility of life on Saturn’s moon Titan, which some news reports have further hyped up as hints of extraterrestrials.

However, scientists also caution that aliens might have nothing to do with these findings.

All this excitement is rooted in analyses of chemical data returned by NASA’s Cassini spacecraft. One study suggested that hydrogen was flowing down through Titan’s atmosphere and disappearing at the surface. Astrobiologist Chris McKay at NASA Ames Research Center speculated this could be a tantalizing hint that hydrogen is getting consumed by life.

“It’s the obvious gas for life to consume on Titan, similar to the way we consume oxygen on Earth,” McKay said.

Another study investigating hydrocarbons on Titan’s surface found a lack of acetylene, a compound that could be consumed as food by life that relies on liquid methane instead of liquid water to live.

“If these signs do turn out to be a sign of life, it would be doubly exciting because it would represent a second form of life independent from water-based life on Earth,” McKay said.

However, NASA scientists caution that aliens might not be involved at all.

“Scientific conservatism suggests that a biological explanation should be the last choice after all non-biological explanations are addressed,” said Mark Allen, principal investigator with the NASA Astrobiology Institute Titan team. “We have a lot of work to do to rule out possible non-biological explanations. It is more likely that a chemical process, without biology, can explain these results.”

“Both results are still preliminary,” McKay told SPACE.com.

To date, methane-based life forms are only speculative, with McKay proposing a set of conditions necessary for these kinds of organisms on Titan in 2005. Scientists have not yet detected this form of life anywhere, although there are liquid-water-based microbes on Earth that thrive on methane or produce it as a waste product.

On Titan, where temperatures are around minus 290 degrees Fahrenheit (minus 179 degrees Celsius), any organisms would have to use a substance that is liquid as its medium for living processes. Water itself cannot do, because it is frozen solid on Titan’s surface. The list of liquid candidates is very short — liquid methane and related molecules such as ethane. Previous studies have found Titan to have lakes of liquid methane.

Missing hydrogen?

The dearth of hydrogen Cassini detected is consistent with conditions that could produce methane-based life, but do not conclusively prove its existence, cautioned researcher Darrell Strobel, a Cassini interdisciplinary scientist based at Johns Hopkins University in Baltimore, Md., who authored the paper on hydrogen appearing online in the journal Icarus.

Strobel looked at densities of hydrogen in different parts of the atmosphere and the surface. Previous models from scientists had predicted that hydrogen molecules, a byproduct of ultraviolet sunlight breaking apart acetylene and methane molecules in the upper atmosphere, should be distributed fairly evenly throughout the atmospheric layers.

Strobel’s computer simulations suggest a hydrogen flow down to the surface at a rate of about 10,000 trillion trillion molecules per second.

“It’s as if you have a hose and you’re squirting hydrogen onto the ground, but it’s disappearing,” Strobel said. “I didn’t expect this result, because molecular hydrogen is extremely chemically inert in the atmosphere, very light and buoyant. It should ‘float’ to the top of the atmosphere and escape.”

Strobel said it is not likely that hydrogen is being stored in a cave or underground space on Titan. An unknown mineral could be acting as a catalyst on Titan’s surface to help convert hydrogen molecules and acetylene back to methane.

Although Allen commended Strobel, he noted “a more sophisticated model might be needed to look into what the flow of hydrogen is.”

Consumed acetylene?

Scientists had expected the sun’s interactions with chemicals in the atmosphere to produce acetylene that falls down to coat the Titan surface. But Cassini mapped hydrocarbons on Titan’s surface, it detected no acetylene on the surface, findings appearing online in the Journal of Geophysical Research.

Instead of alien life on Titan, Allen said one possibility is that sunlight or cosmic rays are transforming the acetylene in icy aerosols in the atmosphere into more complex molecules that would fall to the ground with no acetylene signature.

In addition, Cassini detected an absence of water ice on the Titan surface, but loads of benzene and another as-yet-unidentified material, which appears to be an organic compound. The researchers that a film of organic compounds are covering the water ice that makes up Titan’s bedrock. This layer of hydrocarbons is at least a few millimeters to centimeters thick, but possibly much deeper in some places.

“Titan’s atmospheric chemistry is cranking out organic compounds that rain down on the surface so fast that even as streams of liquid methane and ethane at the surface wash the organics off, the ice gets quickly covered again,” said Cassini team scientist Roger Clark based at the U.S. Geological Survey in Denver. “All that implies Titan is a dynamic place where organic chemistry is happening now.”

Speculation ‘Jumping the Gun’

All this speculation “is jumping the gun, in my opinion,” Allen said.

“Typically in the search for the existence of life, one looks for the presence of evidence — say, the methane seen in the atmosphere of Mars, which can’t be made by normal photochemical processes,” Allen added. “Here we’re talking about absence of evidence rather than presence of evidence — missing hydrogen and acetylene — and often times there are many non-life processes that can explain why things are missing.”

These findings are “still a long way from evidence of life,” McKay said. “But it could be interesting.”

Source:  Yahoo News/Space.com

Mr Ilyumzhinov made the claims in a TV interview

A Russian MP has asked President Dmitry Medvedev to investigate claims by a regional president that he has met aliens on board a spaceship.

Kirsan Ilyumzhinov, the leader of the southern region of Kalmykia, made his claim in a television interview.

MP Andre Lebedev is not just asking whether Mr Ilyumzhinov is fit to govern.

He is also concerned that, if he was abducted, he may have revealed details about his job and state secrets.

The MP has written a letter to Mr Medvedev raising a list of his concerns.

In his letter he says that – assuming the whole thing was not just a bad joke – it was an historic event and should have been reported to the Kremlin.

He also asks if there are official guidelines for what government officials should do if contacted by aliens, especially if those officials have access to state secrets.

Mr Ilyumzhinov said in an interview on primetime television that he had been taken on board an alien spaceship which had come to planet Earth to take samples – and claims to have several witnesses.

He has been president of Kalmykia, a small Buddhist region of Russia which lies on the shores of the Caspian Sea, for 17 years.

The millionaire former businessman has a reputation as an eccentric character.

As president of the World Chess Federation, he has spent tens of millions of dollars turning the impoverished republic into a mecca for chess players – building an entire village to host international tournaments.

Source: BBC

Hawking has depicted what kinds of alien could be out there

Jonathan Leake

THE aliens are out there and Earth had better watch out, at least according to Stephen Hawking. He has suggested that extraterrestrials are almost certain to exist — but that instead of seeking them out, humanity should be doing all it that can to avoid any contact.

The suggestions come in a new documentary series in which Hawking, one of the world’s leading scientists, will set out his latest thinking on some of the universe’s greatest mysteries.

Alien life, he will suggest, is almost certain to exist in many other parts of the universe: not just in planets, but perhaps in the centre of stars or even floating in interplanetary space.

Hawking’s logic on aliens is, for him, unusually simple. The universe, he points out, has 100 billion galaxies, each containing hundreds of millions of stars. In such a big place, Earth is unlikely to be the only planet where life has evolved.

“To my mathematical brain, the numbers alone make thinking about aliens perfectly rational,” he said. “The real challenge is to work out what aliens might actually be like.”

The answer, he suggests, is that most of it will be the equivalent of microbes or simple animals — the sort of life that has dominated Earth for most of its history.

One scene in his documentary for the Discovery Channel shows herds of two-legged herbivores browsing on an alien cliff-face where they are picked off by flying, yellow lizard-like predators. Another shows glowing fluorescent aquatic animals forming vast shoals in the oceans thought to underlie the thick ice coating Europa, one of the moons of Jupiter.

Such scenes are speculative, but Hawking uses them to lead on to a serious point: that a few life forms could be intelligent and pose a threat. Hawking believes that contact with such a species could be devastating for humanity.

He suggests that aliens might simply raid Earth for its resources and then move on: “We only have to look at ourselves to see how intelligent life might develop into something we wouldn’t want to meet. I imagine they might exist in massive ships, having used up all the resources from their home planet. Such advanced aliens would perhaps become nomads, looking to conquer and colonise whatever planets they can reach.”

He concludes that trying to make contact with alien races is “a little too risky”. He said: “If aliens ever visit us, I think the outcome would be much as when Christopher Columbus first landed in America, which didn’t turn out very well for the Native Americans.”

The completion of the documentary marks a triumph for Hawking, now 68, who is paralysed by motor neurone disease and has very limited powers of communication. The project took him and his producers three years, during which he insisted on rewriting large chunks of the script and checking the filming.

John Smithson, executive producer for Discovery, said: “He wanted to make a programme that was entertaining for a general audience as well as scientific and that’s a tough job, given the complexity of the ideas involved.”

Hawking has suggested the possibility of alien life before but his views have been clarified by a series of scientific breakthroughs, such as the discovery, since 1995, of more than 450 planets orbiting distant stars, showing that planets are a common phenomenon.

So far, all the new planets found have been far larger than Earth, but only because the telescopes used to detect them are not sensitive enough to detect Earth-sized bodies at such distances.

Another breakthrough is the discovery that life on Earth has proven able to colonise its most extreme environments. If life can survive and evolve there, scientists reason, then perhaps nowhere is out of bounds.

Hawking’s belief in aliens places him in good scientific company. In his recent Wonders of the Solar System BBC series, Professor Brian Cox backed the idea, too, suggesting Mars, Europa and Titan, a moon of Saturn, as likely places to look.

Similarly, Lord Rees, the astronomer royal, warned in a lecture earlier this year that aliens might prove to be beyond human understanding.

“I suspect there could be life and intelligence out there in forms we can’t conceive,” he said. “Just as a chimpanzee can’t understand quantum theory, it could be there are aspects of reality that are beyond the capacity of our brains.”

Stephen Hawking’s Universe begins on the Discovery Channel on Sunday May 9 at 9pm

Source: Times Online

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Source: The Daily Telegraph