Scarpe Nike Air Presto BR Rosse Saldi

ding2018
User offline. Last seen 29 weeks 2 days ago. Offline
เจ้าของฟาร์ม
Joined: 07/02/2018
Posts: 73
Points: 0

Astronomers have discovered a super-size black hole harkening back to almost the dawn of creation.

It's the farthest black hole ever found.

A team led by the Carnegie Observatories' Eduardo Banados reported in the journal Nature on Wednesday that the black hole lies in a quasar dating to 690 million years of the Big Bang. That means the light from this quasar has been traveling our way for more than 13 billion years.

Banados said the quasar provides a unique baby picture of the universe cheap mens jordan 6 unc , when it was just 5 percent of its current age.

It would be like seeing photos of a 50-year-old man when he was 2 12 years old, according to Banados.

"This discovery opens up an exciting new window to understand the early universe," he said in an email from Pasadena, California.

Quasars are incredibly bright objects deep in the cosmos, powered by black holes devouring everything around them. That makes them perfect candidates for unraveling the mysteries of the earliest cosmic times.

The black hole in this newest, most distant quasar is 800 million times the mass of our sun.

Much bigger black holes are out there, but none so far away — at least among those found so far. These larger black holes have had more time to grow in the hearts of galaxies since the Big Bang womens jordan 6 unc for sale , compared with the young one just observed.

"The new quasar is itself one of the first galaxies, and yet it already harbors a behemoth black hole as massive as others in the present-day universe," co-author Xiaohui Fan of the University of Arizona's Steward Observatory said in a statement.

Around the time of this newest quasar, the universe was emerging from a so-called Dark Ages. Stars and galaxies were first appearing and their radiation ionizing the surrounding hydrogen gas to illuminate the cosmos.

Banados suspects there are more examples like this out there, between 20 and 100.

"The newfound quasar is so luminous and evolved that I would be surprised if this was the first quasar ever formed," Banados said. "The universe is enormous and searching for these very rare objects is like looking for the needle in the haystack."

Only one other quasar has been found in this ultra-distant category, despite extensive scanning. This newest quasar beats that previous record-holder by about 60 million years.

Still on the lookout mens jordan 6 unc for sale , astronomers are uncertain how close they'll get to the actual beginning of time, 13.8 billion years ago.

Banados and his team used the Carnegie's Magellan telescopes in Chile, supported by observatories in Hawaii, the American Southwest and the French Alps.

(Agencies)

FILE - This is a Nov. 26, 2008 file photo of Dr Oliver Sacks, receiving his Commander of the Order of the British Empire (CBE ), by Britain's Queen Elizabeth II at Buckingham Palace womens jordan 6 retro unc , London. Dr. Oliver Sacks, whose books like "The Man Who Mistook His Wife For a Hat" probed distant ranges of human experience by compassionately portraying people with severe and sometimes bizarre neurological conditions, has died. He was 82 .Sacks died Sunday at his home in New York City, his assistant, Kate Edgar, said. (Lewis WhyldPA via AP) UNITED KINGDOM OUT

NEW YORK — There was the blind man who had the disastrous experience of regaining his sight. The surgeon who developed a sudden passion for music after being struck by lightning. And most famously, the man who mistook his wife for a hat.

Those stories and many more mens jordan 6 retro unc , taking the reader to the distant ranges of human experience, came from the pen of Dr. Oliver Sacks.

Sacks, 82, died Sunday at his home in New York City, his assistant, Kate Edgar, said. In February womens jordan 6 unc 2017 , he had announced that he was terminally ill with a rare eye cancer that had spread to his liver.

As a practicing neurologist, Sacks looked at some of his patients with a writer's eye and found publishing gold.

In his best-selling 1985 book, "The Man Who Mistook His Wife for a Hat," he described a man who really did mistake his wife's face for his hat while visiting Sacks' office, because his brain had difficulty interpreting what he saw. Another story in the book featured twins with autism who had trouble with ordinary math but who could perform other amazing calculations.

Discover magazine ranked it among the 25 greatest science books of all time in 2006, declaring, "Legions of neuroscientists now probing the mysteries of the human brain cite this book as their greatest inspiration."

Sacks' 1973 book mens jordan 6 unc 2017 , "Awakenings," about hospital patients who'd spent decades in a kind of frozen state until Sacks tried a new treatment, led to a 1990 movie in which Sacks was portrayed by Robin Williams. It was nominated for three Academy Awards.

Still another book, "An Anthropologist on Mars: Seven Paradoxical Tales," published in 1995, described cases like a painter who lost color vision in a car accident but found new creative power in black-and-white, and a 50-year-old man who suddenly regained sight after nearly a lifetime of blindness. The experience was a disaster; the man's brain could not make sense of the visual world. It perceived the human face as a shifting mass of meaningless colors and textures.

After a full and rich life as a blind person womens jordan 6 unc , he became "a very disabled and miserable partially sighted man," Sacks recalled later. "When he went blind again, he was rather glad of it."

Despite the drama and unusual stories, his books were not literary freak shows.

"Oliver Sacks humanizes illness ... he writes of body and mind, and from every one of his case studies there radiates a feeling of respect for the patient and for the illness," Roald Hoffmann, a Nobel Prize-winning chemist mens jordan 6 unc , said in 2001. "What others consider unmitigated tragedy or dysfunction, Sacks sees, and makes us see, as a human being coping with dignity with a biological problem."

When Sacks received the pres. Wholesale Custom Jerseys Wholesale Custom Jerseys Wholesale Custom MLB Jerseys Wholesale Cheap Jerseys Wholesale NBA Jerseys Wholesale Sports MLB Jerseys Cheap Jerseys Cheap College Football Jerseys Cheap NFL Jerseys Cheap Nike NBA Jerseys

Counter

  • Visitor Count: 33,350