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03-17-2014, 05:14 PM | |
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Scientists find cosmic ripples from birth of universe
Scientists find cosmic ripples from birth of universe
Published March 17, 2014 Astronomers have discovered what they believe is the first direct evidence of the astonishing expansion of the universe in the instant following the Big Bang -- the scientific explanation for the birth of the universe some 13.8 billion years ago. Scientists believe that the universe exploded from a tiny speck and hurled itself out in all directions in the fraction of a second that followed, beginning just 10 to the minus 35 seconds (roughly one trillionth of a trillionth of a trillionth of a second) after the universe's birth. Matter ultimately coalesced hundreds of millions of years later into planets, stars, and ultimately us. And like ripples from a ball kicked into a pond, that Big Bang-fueled expansion caused ripples in the ancient light from that event, light which remains imprinted in the skies in a leftover glow called the cosmic microwave background. Scientists still don’t know who kicked the ball. But if confirmed, the newfound ripples would be amazing proof of what has long been mere theory about what happened in those first millionths of a second. “The implications for this detection stagger the mind,” said Jamie Bock, professor of physics at Caltech, laboratory senior research scientist at the Jet Propulsion Laboratory (JPL) and project co-leader. “We are measuring a signal that comes from the dawn of time.” "It would be the most important discovery since the discovery, I think, that the expansion of the universe is accelerating," Harvard astronomer Avi Loeb, who is not a member of the study team, told Space.com. He compared the finding to a 1998 observation that opened the window on mysterious dark energy and won three researchers the 2011 Nobel Prize in physics. The groundbreaking results came from observations by BICEP2, a telescope at the South Pole, of the cosmic microwave background -- a faint glow left over from the Big Bang. Beginning a fraction of a fraction of a second after the universe's birth, according to the current theory, space-time expanded incredibly rapidly, ballooning outward faster than the speed of light. The afterglow from that expansion is called the cosmic microwave background, and tiny fluctuations in it provide clues to conditions in the early universe. For example, small differences in temperature across the sky show where parts of the universe were denser, eventually condensing into galaxies and galactic clusters. Since the cosmic microwave background is a form of light, it exhibits all the properties of light, including polarization. On Earth, sunlight is scattered by the atmosphere and becomes polarized, which is why polarized sunglasses help reduce glare. In space, the cosmic microwave background was scattered by atoms and electrons and became polarized too. “Our team hunted for a special type of polarization called ‘B-modes,’ which represents a twisting or ‘curl’ pattern in the polarized orientations of the ancient light,” said Bock. The team presented their work at a press conference Monda at Harvard -- the discovery of that characteristic pattern of polarization in the skies, which they called proof of the gravitational waves across the primordial sky. “This work offers new insights into some of our most basic questions: Why do we exist? How did the universe begin? These results are not only a smoking gun for inflation, they also tell us when inflation took place and how powerful the process was,” Harvard theorist Avi Loeb said. |
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03-18-2014, 10:49 AM | #46 |
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that's not elaborating, it's a cop-out. What caused the spark?
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03-18-2014, 10:49 AM | #47 | |
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Quote:
But The first line of the old testament /Judao-Christian-Muslim bible, "In the beginning, god created the heavens and earth". The OP seems to suggest or prove even, that first sentence took longer to read than the actual creation or beginning, of time and space. This science is following the bible pretty close. And we're not even including any other religions. |
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03-18-2014, 11:00 AM | #48 |
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Right behind that ripple is the first time we got ****ed by the broncos
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03-18-2014, 11:02 AM | #49 |
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Who said there is a cause?
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03-18-2014, 11:03 AM | #50 |
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And that's one of the most common cop outs that most Aetheists have against the belief of God and creation. Why does God have to be created, again?
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03-18-2014, 11:11 AM | #51 |
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Why does the universe have to be created, again?
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03-18-2014, 11:12 AM | #52 |
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Eh. You start getting into tangled philosophical arguments. Why is there something instead of nothing? Why is there life instead of no life? Again, we're talking belief here. If one believes god created the universe, you can't tell them they're wrong.
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03-18-2014, 11:19 AM | #53 |
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If they are going to post things that are explained by supernatural forces I feel inclined to explain with natural forces. Maybe its a character flaw, but really its very simple to just reverse the argument and ask if the universe is not eternal why is god? If the answer is "cuz I believe that" then that my answer is as well.
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03-18-2014, 11:20 AM | #54 |
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I call bullshit.
And whoever thinks the universe just goes on forever is an idiot ! |
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03-18-2014, 11:24 AM | #55 | |
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Quote:
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03-18-2014, 11:25 AM | #56 |
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Can we get a universe created where the Chiefs win another Super Bowl and the Broncos go 0-16 every year?
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03-18-2014, 11:28 AM | #57 |
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03-18-2014, 11:29 AM | #58 |
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03-18-2014, 11:37 AM | #59 |
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Probably. There is some photographic evidence that supports it. I can't imagine this is the only universe. I'm kind of partial to the bubble multiverse.
Bubble Universes In addition to the multiple universes created by infinitely extending space-time, other universes could arise from a theory called "eternal inflation." Inflation is the notion that the universe expanded rapidly after the Big Bang, in effect inflating like a balloon. Eternal inflation, first proposed by Tufts University cosmologist Alexander Vilenkin, suggests that some pockets of space stop inflating, while other regions continue to inflate, thus giving rise to many isolated "bubble universes." Thus, our own universe, where inflation has ended, allowing stars and galaxies to form, is but a small bubble in a vast sea of space, some of which is still inflating, that contains many other bubbles like ours. And in some of these bubble universes, the laws of physics and fundamental constants might be different than in ours, making some universes strange places indeed.
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03-18-2014, 11:38 AM | #60 |
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And now we are back on topic
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