Showing posts with label Mind Blowing info. Show all posts
Showing posts with label Mind Blowing info. Show all posts

Apocalypse cloud: Extraordinary sight appears above Montana's Crazy Mountains

on Monday 16 January 2012


This astounding image captured above the mountains of Montana looks like the first sign of an alien invasion.
In fact, it is a lenticular cloud, which often forms in a UFO-like saucer shape, triggering reports of extraterrestrial sightings.
The apocalyptic sky appeared over the jagged peaks of the Crazy Mountains just as the new year began.





It comes just weeks after such clouds were spotted in a more unlikely setting, above Fatsley in West Yorkshire.
The spectacular vision is created when moisture droplets are pushed up a steep slope, condensing into cloud on their way and warming up to return to water vapour as they move down the other side.
 
These clouds are known as Altocunulus lenticularis - referring to their lens-shape - and hover high in the air, usually over the Andes, Himalayas or the Rockies.
This terrifyingly beautiful sight appeared as high winds blew over the mountains on New Year's Day.
Bright colours are sometimes seen along the edge of lenticular clouds, which are said to be the single biggest explanation for UFO sightings across the world.
The awe-inspiring formations have also been known to appear in cases where a mountain does not exist, as the result of shear winds created by a front.


Read more: http://www.dailymail.co.uk/news/article-2082443/Apocalypse-cloud-Extraordinary-sight-appears-Montanas-Crazy-Mountains-New-Years-Day.html#ixzz1jYXnsusB

Balancing on a Giant Rubber Band 1000 ft in the Air


Slacklining_on_Table_Mountain
Photo: Greg Beadle via Cape Town Blog
With the wind whistling in your ears, a breathtaking view before your eyes, and a yawning gulf beneath your feet, would it matter whether your steps over the abyss were so... well... elastic? Balancing and bouncing about on a thin but obligingly flat strip of nylon webbing may sound like a lot of fun, but when this stretchy, oversized rubber band is all that lies between exhilaration and a long freefall to the gorge floor thousands of feet down, you know this zany extreme sport isn’t for sissies. Tightrope walking’s looser, more flexible but no less gnarly younger cousin, slacklining redefines the word dynamic.
Slacklining_over_Table_Mountain_2
Photo: Greg Beadle via Cape Town Blog
These pictures show two young South African enthusiasts of slacklining – which combines balance, concentration and fitness – taking a leisurely afternoon amble through the rarefied air over Cape Town in 2009. In so doing, Warren Gans and Sean Wakelin staked a claim as the first people to slackline on the famous Table Mountain landmark. Following the adrenalin-fuelled day, a serene evening set in, with photographer Greg Beadle remarking: “Sean had to strap his toes to stop the bleeding and carried his full pack back down, bravely carrying the war wounds of his first attempts at slacklining.”
Slacklining_on_Table_Mountain
Photo: Greg Beadle
OK, now bleeding feet we can take, but a first attempt at slacklining? Naturally, not everybody jumps in at the deep end in quite such drastic fashion; instead they start on less daunting low-slung lines. Like many extreme sports, slacklining presents itself as an activity for one and all, but a glance at some of the highlines set up in precipitous places tells you this take on the sport isn’t for old fogies with heart conditions. Just look at these drops. Yet, as intimidating as they look, the learning curve for the basics of slacklining is pretty quick. With a bit of perseverance over a few hours, most people are up and walking around like toddlers in playschool.
Harlan_Walking_the_Spire
Photo: Scott Rogers / Slackline.com
Slacklining was born when two wacky rock climbers living in Yosemite Valley in the early 80s, Adam Grosowsky and Jeff Ellington, began walking on parking lot chains and even ropes strung up between the trees to relieve boredom. They soon started stringing up their climbing webbing, and from there the sport spread. In 1983, the duo set up a 55-foot cable line at Lost Arrow Spire, nearly 3,000 feet up, but while neither of them was able to cross it, a webbing highline was set up in the same spot the next year by Scott Balcom and Darrin Carter. Balcom was the first person to cross the now now-famous line in 1985. Highlining had arrived.
Highlining has a helpfully self-explanatory name. The lines are placed great distances up in the air over ground or water. But most slackers, as they’re known, aren’t slackers when it comes to rigging, and take care to ensure that the anchors between which the line is secured are equally sized and suitably solid. No kidding. For safety’s sake, most highliners will also wear a climbing harness or swami belt with a leash attached to the slackline itself, but unleashed highline walks are not unheard of – especially in circles where some would argue balls outweigh brains by a considerable stretch.
Slacklining_over_a_Waterfall
Photo: via Velvet Antlers Blog
Lines threaded through with extra webbing, doubled up, or supplemented with climbing ropes running along them are safety measures taken by the saner among slackers, and even those with testosterone levels higher than their IQ scores will pad all areas of the rigging which might come in contact with abrasive surfaces that read ‘Snap’ in big scary letters to the trained eye. Today, Lost Arrow Spire is probably the world's most well-known and revered highline, yet only a few dozen people have actually walked the line, most of them in the last decade.

via source

iPad Survives Fall From Edge of Space in Jaw-Dropping Video


A new video has captured an Apple iPad's mindboggling fall to Earth from a balloon in the stratosphere in what may be the ultimate tablet survivor tale.
The high-definition video shows the iPad falling from a height of 100,000 feet (30,480 meters), with the blackness of space and the bright curve of Earth providing a stunning backdrop. The device free-falls all the way back to Earth to make a crash landing on a rocky Nevada hillside.
The video was recorded by the Rhode Island-based company G-Form, which designs protective electronics cases and athletic pads.
"We are usually known for making the most protective gear on the planet," said Thom Cafaro, G-Form's vice president of innovations, in a Jan. 6 statement. "So we decided why not raise the bar to off the planet too." [Photos and video of iPad's space fall]










G-Form officials used a weather balloon to carry the iPad up into the Earth's stratosphere, where the balloon burst and allowed its payload to begin the long fall back to the ground. G-Form wrapped the iPad in one of its 6-ounce protective "Extreme Edge" cases to test how well the covering performed in such a long drop.
"Perhaps even more remarkable than the dramatic hi-def footage itself is the fact that the iPad survives the adventure, remaining fully functional," G-Form officials said. The company will be showcasing its electronics cases this week at the 2012 Consumer Electronics Show in Las Vegas, Nevada.
Cafaro said that the device was "the first iPad that's ever free-fallen from space and survived to play more movies."
G-Form Extreme Edge Case Encloses Falling iPad
G-Form Extreme Edge Case encloses an iPad as it falls from space back to Earth.
CREDIT: G-Form




















G-Form's stratospheric iPad is not the first Apple tablet to soar into space and its environs.
In October, Russia put two iPads in space as cargo aboard a Russian supply ship which launched to the International Space Station. They were reserved for use as entertainment devices for the space station's crew. The iPads joined a set of iPhone 4 phones, which were launched to the space station earlier in 2011 to be used in experiments.
Astronauts have also carried Apple's iPods with them on space shuttle and station-bound missions in order to listen to music while exercising, gazing out the window or other down time in orbit.
The iPad's stratospheric fall is the latest example of balloon-launched technology carrying custom-built tech to amazing heights. During NASA's final space shuttle missions in 2011, student groups used similar balloons to launch home-made camera platforms into the stratosphere to snap amazing photos of shuttle launches from above.
This story was updated to correctly identify the iPhone 4 devices currently aboard the International Space Station.

via source

The shoes are still left outside the cabins to be polished: An eerie trip with the tourists diving two miles to see the Titanic


For 13 years people have been able to drop down to the depths of the Atlantic Ocean in submersibles to see the remains of the Titanic. But now, hundred years on after it sank, these expeditions are coming to close to allow the ship to rest in peace. Here, ROB McCALLUM who works for the deep-sea exploration company that took 150 people down there, describes the underwater journey

As the craft glides through the freezing depths of the ocean, more than two miles below the surface, I stare out through the thick glass window into the abyss.
From the external lights of our vessel, I can see across the ancient terrain, which looks almost like a lunar landscape. Occasionally strange aquatic creatures dart across my vision, adding to the alien atmosphere.
Then suddenly, there it is, the sight I shall never forget. Rising before my eyes is the prow of the most famous ship in the world.
Tales from beyond the grave: The Titanic lies still and rusting in its final resting place
Tales from beyond the grave: The Titanic lies still and rusting in its final resting place
I am peering at the wreckage of the RMS Titanic, which plunged to this watery, icy grave almost a century ago in April 1912.
Even in the darkness of the ocean floor, the front part of the mighty vessel still looks magnificent, the encrusted railings and sweep of her hull instantly recognisable.    
Our submersible continues its journey over the remains of the mighty ship, and I look bewitched at the famous grand staircase and the promenade deck where once the wealthy passengers briefly revelled in all their glorious opulence before the iceberg was struck.
Further along, about a mile from the prow, we find the rear part of the ship, more badly damaged than the prow, with great sheets of metal ripped from its sides.  
But even in her broken, decaying state, this ghostly relic exudes an epic sense of majesty. For what was so striking about the wreckage is its colossal size.
The two key sections of the ship make vast monuments on the ocean bed. 
In the abyss: A well preserved sign of the crewmans quarters at the end of the A deck
In the abyss: A well preserved sign of the crewmans quarters at the end of the A deck
Even one of the main three-bladed propellers, built of solid bronze and remarkably well preserved, is more than twice as heavy as our 18-ton submersible — a submarine which allows detailed exploration of the sea bed.
The Titanic was the largest ship of its time, and one of the most beautiful ever created. But even now, all these years after the tragedy, the wreck of this leviathan still has the ability to inspire and humble.
My chance to view the wreckage arose because of my position with the Isle of Man-based company, Deep Ocean Expeditions, which specialises in deep-sea research and exploration, mainly for scientific, film-making and investigative purposes.
For our expeditions, we work with the PP Shirshov Institute of Oceanology, part of the Russian Academy of Science. They are the owners of the twin Mir submersibles, each capable of depths of 20,000ft. By working together, we are able to assist the Institute’s science work, as well as making a contribution to the Mirs’ operating costs.
One of our most popular trips is to see the remains of the German battleship the Bismark, which was sunk by the Royal Navy in 1941 about 350 miles off the south-western Irish coast.  
The other, more notorious trip is to the wreck of the Titanic, which was discovered in 1986 by the renowned American oceanographer Dr Robert Ballard, who, incidentally, also found the Bismark in 1989.
Preserved: An upright carafe and glass survived the sinking and remain almost in their original state
Preserved: An upright carafe and glass survived the sinking and remain almost in their original state
Over the past decade, nearly 200 Titanic dives by the company have taken 150 individuals down to see it, and — despite the $59,000 (£38,000) cost — the expeditions have never been more over-subscribed than for this year — the 100th anniversary of the disaster.    
The clients have included bankers, teachers, pilots, doctors, historical experts and sometimes the descendants of survivors or those who perished in the tragedy.   
But, after 13 years, 2012 is also the last time we will be running such trips to the Titanic.
It has been a wonderful adventure, but with the centenary approaching, now is the proper moment to draw these expeditions to a close and allow this tragic ship to rest in peace.
There are only five submersibles in the world — made of high-tech metals — that can withstand the immense pressure of the conditions around the wreck, about 12,500ft below the surface.  
Expeditions begin with passengers boarding a larger ship in Newfoundland, which carries them and the submersible out to the spot where the Titanic sank. 
The passengers are generally given a day to familiarise themselves with the craft and have a briefing about the forthcoming trip; they then attend lectures in Titanic history, oceanography and deep-sea operations.
Costly: To pay a visit down to the Titanic and witness sights like this white China still in the wooden sideboards of the reception rooms it will cost around £38,000
Costly: To pay a visit down to the Titanic and witness sights like this white China still in the wooden sideboards of the reception rooms it will cost around £38,000
The dive begins the next morning, taking roughly two hours to reach the ocean bed.
At a depth of about 800ft, the submersible descends into darkness, for this is the maximum depth to which the sun’s rays can penetrate. As we travel further down, the enveloping blackness is broken only by the sub’s own lights.   
Once the vessel reaches the bottom, it manoeuvres its way around the two main sections of the ship for between four to eight hours, as well as looking at the other debris strewn across the sea bed.
The sights are truly remarkable — far more astonishing than any photograph can convey. Though the stern of the ship was badly damaged because it hit the ocean bed so hard — having travelled through the water at an estimated speed of 30 knots (the marine equivalent of 35mph) after the Titanic broke up — it is fascinating to see the vast engine rooms down there, full of massive machinery.
Equally arresting are the three immense propellers, between them weighing more than 100 tons and the two biggest of which were 23ft in diameter. Thanks to their sturdiness, they have survived well.
There is, however, no sign of the four enormous funnels, which would have been ripped off as the Titanic began her descent. Their fragments would have scattered over a wide area.
Popular: Despite the high cost trips down to the Titanic have never been more over-subscribed
Popular: Despite the high cost trips down to the Titanic have never been more over-subscribed
It is also possible to glimpse the interiors of some of the cabins, especially where the outer steel sheets of the hull were ripped away. Although the woodwork and fabrics have long gone, the metal walls and bronze and brass fittings remain.
Particularly poignant are the quarters of Captain Smith, who, in true heroic naval traditions, went down with his ship.
Of his three rooms, his bathroom is most clearly visible — his porcelain bathtub still in remarkably good condition.
Perhaps even more astonishing are all the artefacts strewn on the ground around the two main sections. Everywhere you look there are bottles, crockery, cutlery, even suitcases and shoes.
No clothes, carpets or other such material survives, as all that would have long rotted or been eaten by living organisms.
But anything leather has generally stayed in good condition and is only covered in a layer of silt.
Indeed, the number of shoes is surprising. This is because the ship went down just before midnight, at a time when many passengers would have retired to their cabins, undressed and put their shoes outside the door, ready to be cleaned by the staff.
Shining through darkness: At a depth of about 800ft, the submersible descends into darkness, for this is the maximum depth to which the sun¿s rays can penetrate
Shining through darkness: At a depth of about 800ft, the submersible descends into darkness, for this is the maximum depth to which the sun¿s rays can penetrate
Though sights like this are a poignant reminder of the human cost of the tragedy, there is nothing remotely macabre or ghoulish about visiting the wreckage.
There are no remains from any of the 1,514 victims who perished in the disaster. Their bodies would have been cast over a huge area, since many of them drowned or died of hypothermia in the freezing ocean. Other corpses, dragged down with the ship, would eventually have drifted away or been obliterated by the sea life that lurks in these depths.
In fact, the existence of other animal life so deep in the ocean is one of the most compelling features of a visit to the Titanic.  
As you travel down below 10,000ft, it almost seems impossible that any organism could survive in such a hostile environment. Yet even in the icy blackness, nature flourishes.    
On my trips to the wreckage, I have been astounded at the range of strange beings, such as six-inch rat-tailed fish, white-bodied crabs and creatures that give off light: blue, green and white flashes as they attract mates, or lure prey.
Even so, nothing can beat the awesome image of the Titanic itself.
The tragedy was a turning-point in history, the moment when man realised that nature could not always be tamed by technology, that no ship could ever be unsinkable.
Whenever I gaze in wonder at the wreckage, I sense that I am looking at an important part of mankind’s rich, sometimes distressing narrative; the same feeling I experience when visiting memorial cemeteries to the heroes who fell in the bloodstained fields of northern Europe during World War I.   
We come to these places to remember — and to learn from those who have passed before us.      
It will be an honour to see the Titanic, in all her ruined glory, one last time.


Read more: http://www.dailymail.co.uk/news/article-2085498/An-eerie-trip-tourists-diving-2-miles-Titanic.html#ixzz1jH4DMQM1

A Brief History of Chocolate

on Thursday 12 January 2012

Chocolate beans and podChocolate beans and pod
When most of us hear the word chocolate, we picture a bar, a box of bonbons, or a bunny. The verb that comes to mind is probably "eat," not "drink," and the most apt adjective would seem to be "sweet." But for about 90 percent of chocolate's long history, it was strictly a beverage, and sugar didn't have anything to do with it.

"I often call chocolate the best-known food that nobody knows anything about," said Alexandra Leaf, a self-described "chocolate educator" who runs a business called Chocolate Tours of New York City.

The terminology can be a little confusing, but most experts these days use the term "cacao" to refer to the plant or its beans before processing, while the term "chocolate" refers to anything made from the beans, she explained. "Cocoa" generally refers to chocolate in a powdered form, although it can also be a British form of "cacao."

Etymologists trace the origin of the word "chocolate" to the Aztec word "xocoatl," which referred to a bitter drink brewed from cacao beans. The Latin name for the cacao tree, Theobroma cacao, means "food of the gods."

Many modern historians have estimated that chocolate has been around for about 2000 years, but recent research suggests that it may be even older.

In the book The True History of Chocolate, authors Sophie and Michael Coe make a case that the earliest linguistic evidence of chocolate consumption stretches back three or even four millennia, to pre-Columbian cultures of Mesoamerica such as the Olmec.

Last November, anthropologists from the University of Pennsylvania announced the discovery of cacao residue on pottery excavated in Honduras that could date back as far as 1400 B.C.E. It appears that the sweet pulp of the cacao fruit, which surrounds the beans, was fermented into an alcoholic beverage of the time.

"Who would have thought, looking at this, that you can eat it?" said Richard Hetzler, executive chef of the café at the Smithsonian's National Museum of the American Indian, as he displayed a fresh cacao pod during a recent chocolate-making demonstration. "You would have to be pretty hungry, and pretty creative!"

It's hard to pin down exactly when chocolate was born, but it's clear that it was cherished from the start. For several centuries in pre-modern Latin America, cacao beans were considered valuable enough to use as currency. One bean could be traded for a tamale, while 100 beans could purchase a good turkey hen, according to a 16th-century Aztec document.

Both the Mayans and Aztecs believed the cacao bean had magical, or even divine, properties, suitable for use in the most sacred rituals of birth, marriage and death. According to Chloe Doutre-Roussel's book The Chocolate Connoisseur, Aztec sacrifice victims who felt too melancholy to join in ritual dancing before their death were often given a gourd of chocolate (tinged with the blood of previous victims) to cheer them up.

Sweetened chocolate didn't appear until Europeans discovered the Americas and sampled the native cuisine. Legend has it that the Aztec king Montezuma welcomed the Spanish explorer Hernando Cortes with a banquet that included drinking chocolate, having tragically mistaken him for a reincarnated deity instead of a conquering invader. Chocolate didn't suit the foreigners' tastebuds at first –one described it in his writings as "a bitter drink for pigs" – but once mixed with honey or cane sugar, it quickly became popular throughout Spain.

By the 17th century, chocolate was a fashionable drink throughout Europe, believed to have nutritious, medicinal and even aphrodisiac properties (it's rumored that Casanova was especially fond of the stuff). But it remained largely a privilege of the rich until the invention of the steam engine made mass production possible in the late 1700s.



In 1828, a Dutch chemist found a way to make powdered chocolate by removing about half the natural fat (cacao butter) from chocolate liquor, pulverizing what remained and treating the mixture with alkaline salts to cut the bitter taste. His product became known as "Dutch cocoa," and it soon led to the creation of solid chocolate.

The creation of the first modern chocolate bar is credited to Joseph Fry, who in 1847 discovered that he could make a moldable chocolate paste by adding melted cacao butter back into Dutch cocoa.

By 1868, a little company called Cadbury was marketing boxes of chocolate candies in England. Milk chocolate hit the market a few years later, pioneered by another name that may ring a bell – Nestle.

In America, chocolate was so valued during the Revolutionary War that it was included in soldiers' rations and used in lieu of wages. While most of us probably wouldn't settle for a chocolate paycheck these days, statistics show that the humble cacao bean is still a powerful economic force. Chocolate manufacturing is a more than 4-billion-dollar industry in the United States, and the average American eats at least half a pound of the stuff per month.

In the 20th century, the word "chocolate" expanded to include a range of affordable treats with more sugar and additives than actual cacao in them, often made from the hardiest but least flavorful of the bean varieties (forastero).

But more recently, there's been a "chocolate revolution," Leaf said, marked by an increasing interest in high-quality, handmade chocolates and sustainable, effective cacao farming and harvesting methods. Major corporations like Hershey's have expanded their artisanal chocolate lines by purchasing smaller producers known for premium chocolates, such as Scharffen Berger and Dagoba, while independent chocolatiers continue to flourish as well.

"I see more and more American artisans doing incredible things with chocolate," Leaf said. "Although, I admit that I tend to look at the world through cocoa-tinted glasses."

Read more: http://www.smithsonianmag.com/arts-culture/brief-history-of-chocolate.html#ixzz1jF045cd1

2,000-year-old Roman cavalry helmet sheds new light on conquest of Britain after experts piece 1,000 fragments back together


Historians have pieced together a 2,000-year-old Roman cavalry helmet 10 years after its discovery in an Iron Age shrine and say it sheds new light on the conquering of Britain. 
The helmet and its cheek pieces have been painstakingly restored from 1,000 small fragments over three years by experts at the British Museum.
Constructed of sheet iron, the helmet, once decorated with gold leaf, is the only one to have been found in Britain with its silver gilt plating intact and is also one of the earliest ever found in Britain.
Roman helmet
Unique: The 2,000 year old silver gilt Roman helmet which was unearthed in a Leicestershire field and painstakingly pieced back together
Metals conservation expert Marilyn Hockey began unearthing the fragments out of a 'big lump of soil' at the British Museum three years ago.
She said: 'Working our way down this enormous lump of clay, we discovered at the bottom some amazing finds ... the emperor cheek piece told us it was something really special.
'To get something straight out of the soil like this is like gold. You can find out so much from it.'
 
The helmet features several scenes of Roman military victory, including the bust of a woman flanked by lions and a Roman emperor on horseback with the goddess Victory flying behind while a cowering figure, possibly a native Briton, is being trampled under his horse’s hooves.
The 2,000 year old Roman helmet is the first of its kind to be found in Britain
Painstaking: It took experts at the British Museum three years to piece together the 1,000 small fragments of the helmet
An artist's impression of what the complete 'Hallaton helmet' might have looked like, created by the British Museum
An artist's impression of what the complete 'Hallaton helmet' might have looked like, created by the British Museum
It is believed to have been buried in the years around the emperor Claudius’s invasion of Britain in AD43.
Experts claim there is a 'distinct possibility' that it belonged to a Briton serving in the Roman cavalry before the conquest of Britain.

They say it changes our understanding of the relationship between Romans and Britons and what the country was like just before the invasion.
It is thought that the helmet may have been buried as a gift to the gods at what was a local shrine on the Briton’s return to the East Midlands.
The helmet was unearthed in Hallaton, Leicestershire, after a metal-detecting enthusiast came across buried coins with his second-hand £260 metal detector.
Retired design and technology teacher, Ken Wallace, 71, called in experts who went on to discover an impressive collection of artefacts.
More than 5,000 coins, ingots and the helmet’s ear guard were among the treasures discovered, along with the remains of a feast of suckling pigs.
Coins from both the British Iron Age and the Roman Empire were found together for the first time.
Mr Wallace and the landowner of the site were paid £300,000 to be split between them for the find.
Mr Wallace said: 'When this ear guard came to the surface we knew it was going to be a Roman cavalry helmet - but what it would look like was anybody’s guess.
'It’s amazing, I never thought I would see it like that. I thought I’d get to see a computer-generated impression. I’ve been extremely lucky.'
Leicestershire County Council has now bought the helmet to go on display at Harborough Museum, just nine miles from where it was buried 2,000 years ago.
Head of research at the British Museum, Jeremy Hill, said his 'mouth dropped' when he saw the object pieced back together.
Precious find: Ken Wallace with the cavalry helmet he unearthed during its unveiling at the British Museum
Precious find: Ken Wallace at the British Museum with the helmet he unearthed. He said he considers himself very lucky to have been able to see it reconstructed
He said that the helmet had helped 'change our understanding of what Britain was like just before the Roman conquest'.
He said: 'Every book on the Roman conquest of Britain is going to have a picture of that helmet in it now.
'Just as we were starting to rethink the importance of the East Midlands in the context of the Roman Empire, it says "bang, you’ve got to rethink it", the same with the relationship between Romans and Britons.'
The helmet may also have been a diplomatic gift to a pro-Roman population, or a spoil of war taken during a raid on a Roman camp or during battle.


Read more: http://www.dailymail.co.uk/sciencetech/article-2084686/Historians-piece-2-000-year-old-Roman-cavalry-helmet-shedding-new-light-ancient-Britain.html#ixzz1jEzgZ3K5

160 Billion Alien Planets May Exist in Our Milky Way Galaxy


Alien Planets Milky Way
This artists’s concept gives an impression of how common planets are around the stars in the Milky Way. A six-year search that surveyed millions of stars using the microlensing technique concluded that planets around stars are the rule rather than the exception.
CREDIT: ESO/M. Kornmesser  


Alien planets are incredibly common in our Milky Way galaxy, outnumbering stars by a large margin, a new study suggests.
On average, each of the 100 billion or so stars in our galaxy hosts at least 1.6 planets, according to the study, bringing the number of likelyalien worlds to more than 160 billion. And large numbers of these exoplanets are likely to be small and rocky — roughly Earth-like — since low-mass planets appear to be much more abundant than large ones.
"This statistical study tells us that planets around stars are the rule, rather than the exception," said study lead author Arnaud Cassan of the Paris Institute of Astrophysics. "From now on, we should see our galaxy populated not only with billions of bright stars, but imagine them surrounded by as many hidden extrasolar worlds."

Using a cosmic gravity lens
To date, astronomers have discovered more than 700 planets beyond our own solar system, with 2,300 additional "candidates" found by NASA's Kepler space telescope awaiting confirmation.
The vast majority of these exoplanet detections have been made using two different techniques: transit photometry and radial velocity. [Gallery: The Strangest Alien Planets]
Kepler employs the transit method, which watches for the tiny, telltale dips in a star's brightness caused when a planet crosses the star's face, blocking some of its light. Radial velocity looks for minuscule wobbles in a star's movement caused by the gravitational tugs of orbiting planets.
While these two methods have been highly productive, they're biased toward finding planets that orbit relatively close to their parent stars. In the new study, Cassan and his colleagues employed a different technique, known as gravitational microlensing, that feels this bias less strongly.
In gravitational microlensing, scientists watch what happens when a massive object passes in front of a star from our perspective on Earth. The nearby object's gravitational field bends and magnifies the light from the distant star, acting like a lens.
This produces a light curve — a brightening and fading of the faraway star's light over time — whose characteristics tell astronomers a lot about the foreground object.
In many cases, this nearby body is a star. If it has any planets, even ones in relatively far-flung orbits, these can generate secondary light curves, alerting researchers to their presence.
La Silla Observatory
The Milky Way above the dome of the Danish 1.54-metre telescope at the European Southern Observatory's La Silla Observatory in Chile. This telescope was a major contributor to the PLANET project to search for exoplanets using microlensing.
CREDIT: ESO/Z. Bardon (www.bardon.cz)/ProjectSoft (www.projectsoft.cz) 














Studying millions of stars
In the new study, the researchers looked at data gathered by a variety of Earth-based telescopes, which scanned millions of stars from 2002 to 2007 for microlensing events.
The team closely analyzed about 40 of these events and discovered that three betrayed the presence of an alien planet around a star. One of these planets is a bit more massive than Jupiter, one is comparable to Neptune and the third is a so-called "super-Earth" with a mass about five times that of our home planet. [Gallery: Smallest Alien Planets Ever Seen]
Considering how perfectly aligned multiple bodies must be to yield an explanet detection via microlensing, that's a pretty impressive haul, researchers said.
The astronomers used all of this data, as well as information about seven additional planets detected by other microlensing efforts, to put a number on their planet-detection efficiency — and, by extension, the number of alien worlds that may populate the Milky Way.
The team determined that about one-sixth of our galaxy's stars harbor Jupiter-mass planets, half have Neptune-like worlds, and nearly two-thirds host super-Earths. And that's just in the stretch of orbital space from 0.5 to 10 astronomical units from each star, the limit of the study's sensitivity. (One astronomical unit, or AU, is the distance from Earth to the sun, about 93 million miles.)
"Moreover, we confirm that low-mass planets, such as super-Earths (up to 10 Earths) and Neptune-like planets are much more abundant than giant planets such as Saturn and Jupiter (with estimates that there are 6 to 7 times more low-mass than giant planets)," Cassan told SPACE.com in an email.
Further, according to the researchers' calculations, every star in the Milky Way harbors an average of 1.6 planets in the 0.5-10 AU range, which in our solar system corresponds roughly to the swath of space between Venus and Saturn.
Since astronomers estimate that our galaxy contains about 100 billion stars, that works out to at least 160 billion alien planets. A fair number of these alien worlds are likely to have two sunsets like the planet Tatooine in the "Star Wars" films; a separate study, also announced today, related the discovery of two exoplanets that orbit a pair of suns.
Cassan and his team report their results in the Jan. 12 issue of the journal Nature.
Planets bound and unbound
The true number of alien worlds may be quite a bit larger than 160 billion. Some planets hug their host stars more closely than 0.5 AU, after all, and others are more far-flung than 10 AU. And a great many likely have no host star at all.
Last year, a different team used microlensing observations to discover a huge population of Jupiter-like planets that zoom through space unbound to a parent star. These free-flying "rogues" likely outnumber "normal" alien worlds with obvious parent stars by at least 50 percent, according to the 2011 study.
"The two results obtained by microlensing show that planets are everywhere, and not only around stars," Cassan said.
For those of us clinging to the notion that Earth is special, these and a raft of other recent exoplanet discoveries may be tough to stomach.
"We used to think that the Earth might be unique in our galaxy," study co-author Daniel Kubas, also of the Paris Institute of Astrophysics, said in a statement. "But now it seems that there are literally billions of planets with masses similar to Earth orbiting stars in the Milky Way."
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