Solar System Date of Birth Determined 266
Invisible Pink Unicorn writes "UC Davis researchers have dated the earliest step in the formation of the solar system — when microscopic interstellar dust coalesced into mountain-sized chunks of rock — to 4,568 million years ago, within a range of about 2,080,000 years. In the second stage, mountain-sized masses grew quickly into about 20 Mars-sized planets and, in the third and final stage, these small planets smashed into each other in a series of giant collisions that left the planets we know today. The dates of these intermediary stages are well established. The article abstract is available from Astrophysical Journal Letters."
Re: was-it-on-a-monday dept. (Score:3, Funny)
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Bah, that's easy when the majority of your system is just running their idle loops! Out of the whole dang system only one core has any active clients, and it's been starting to look a little flakey lately as the client process is gobbling up all the resources.
Margin of Error (Score:4, Informative)
There's a nice political joke in there for those not yet in their holiday brain coma.
So many gifts..! (Score:4, Funny)
Similarly, I've discovered my birthday to be defined as subsequent to July.
Re:So many gifts..! (Score:5, Informative)
Similarly, I've discovered my birthday to be defined as subsequent to July.
Re:So many gifts..! (Score:4, Insightful)
"...to 4,568 million years ago, within a range of about 2 million years"
or
"...to 4,568,000,000 years ago, within a range of about 2,080,000 years"
Its easier to quickly compare the numbers against each other that way.
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I hadn't considered myself inumerate, but even I was bamboozled by the big numbers. Thanks for the clarification.
Rachael
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So, measure the age of the solar system to 1 million years, but then state the error to few orders of magnitude more precise! 2.08 million years. The real error was either 2 million years or some percentage of the original measurement. The real error must not be more accurate than the measurement, so,
4568 +- 2 million years, or
4568.0 +- 2
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+0.91 to 1.17 Myr at 4568 Myr ago
Sad. So, they either exaggerated their accuracy of their error measurement or someone removed the stuff after decimal for 4568. As stated, the relative errors are meaningless since the accuracy of the real value is *not* stated.
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You don't usually get to be a post-doc without having some experience in writing papers, and the peer reviewers must have thought it was ok. Abstracts are a bugger to write, and so very easy to screw up, especially if a word limit is strictly enforced, which is usually the case in my experience.
I've read stuff that was i
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its really about 4 parts in 10000
Is it me or did everyone mistake a period of time for an error margin? I seemed to understand that what it means is that 4,568 million years ago, microscopic interstellar dust started to coalesce into mountain-sized chunks of rock, and this during 2,080,000 years, and then these mountain-sized masses quickly grew into about 20 Mars-sized planets, and so on..
That's really what what I'm reading seems to say, but then it implies that I must be right and anyone else is wrong.
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Profound...(All we are is dust in the wind) (Score:5, Insightful)
Such a shame that we occupy such a small blink in the process, and can't witness cosmic events on any larger a level.
Re:Profound...(All we are is dust in the wind) (Score:5, Insightful)
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Harumph, I mean science is serious business that can have no spiritual value whatsoever.
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Our lifespans mean that there's always a fresh crop of people with new ideas and wanting to find better ways to do things ready to replace us and it also makes sure we feel some healthy pressure
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To be precise, we'd all end up with arthritis, well almost all of us. There has never been a way for evolution to remove that particuler flaw in our genes, because firstly, humans didn't live that long when our species first appeared, and secondly, in virtually all cases it occurs after child rearing age, making it irrellevent to survival, and thus not a factor in natural selection.
Since there is no cure for arthritis at this time, I'll ta
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small lives, big is vulnerable (Score:2)
In some sense the smaller the are the most likely we are to survive and the less resources we are going to need to maintain ourselves. So maybe small size is a virtue (and ants or small microorganisms have more evolutionary potential to survive from a supernova or asteroid, maybe).
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"Such a shame that we occupy such a small blink in the process, and can't witness cosmic events on any larger a level."
Patience grasshopper.
Wait...fur?! Oh blast, what have you mortals gone and evolved yourselves into now?
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We are both a part of nature and responsible for nature. No other lifeform on this planet
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To think that the span of a human life is at best about 1/250 millionth of that cycle.
On nth other hand, consider that by living well into old age, one can have lived through almost 2% of recorded human history. That's a lot, really. So if you chose correctly, it would only take about 50 people to have lived at the time that everything happened.
Just shows in how short a time humans have become what we are.
4,568 million years divided by 7 days (Score:4, Insightful)
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Of course, I'm assuming God uses non-union labour, or we'd still have a solar system that was full of rubble and dust...
Ummm, then again...
GrpA
Re:4,568 million years divided by 7 days (Score:5, Insightful)
Re:4,568 million years divided by 7 days (Score:5, Insightful)
But seriously. No, we can't. We don't compromise between a fiction and hard fact just because lots of people happen to believe the fiction.
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So, I'll call it "allegory" and...
(waits 200 years)
I win.
No compromises, just facts, remember.
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Or at least build some bridges for the Bible folks and the Science folks to agree to something that makes a little more sense?
WTF?
Bible thumpers: Big imaginary fairy created the world 4,000 years ago.
Science folk: You're insane, it's all in your head, and I have proof.
You think those two views can be reconciled?
What I find bizarre is that religion is not considered a form of mental illness in the US. The thought of one such mentally ill leader having access to the largest stock of nuclear weapons in the world is... disturbing.
MAD is very scary. (Score:4, Insightful)
It's supposed to be.
The MAD doctrine deters nuclear war by threatening a retaliation that would likely bring down civilization and possibly end the human race and much of life on Earth.
For it to work, US presidents have to put on a show, looking crazy enough that they'd actually do it - but sane enough that the won't shoot first and can be reasoned with on issues that otherwise would have been "solved" by the outcome of a war. (IMHO it's likely the term "Mutually Assured Destruction" was chosen at least partly for the acronym, to help put on this show. Psych warfare was pretty well developed by the start of the Cold War.)
MAD is pretty terrifying. But it reversed the ongoing escalation of wars right after the bombs were proven to work under battle conditions (and two fried cities were substituted for the years of war that had been expected to be necessary to end the Japan part of WWII). It's been over half a century and no nukes have been used in war since those two.
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Except that the myth of a protracted war with Japan if Hiroshima and Nagasaki hadn't been bombed is only a myth.
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It could very well be that religion is part of human nature (in one way or another) and not a mental illness as you percieve. Otherwise we would not have most of our written/recorded history full of it.
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FSM (Score:2)
Come on, we all know everything was created by a flying spaghetti monster [venganza.org], not a freaking fairy!
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What I find bizarre is that religion is not considered a form of mental illness in the US.
Yeah, me too. I wish anyone who thinks or acts differently from me in a way I disapprove would be considered mentally ill, just like the homosexuals back in the day [wikipedia.org].
Tolerance? What the fuck is that?! I brainwash a Jesus-freak and go get a six-pack. On an unrelated note, why do some many people in this country don't like atheists like me? I don't get it..
Re:4,568 million years divided by 7 days (Score:4, Insightful)
Of course they can be reconciled (Score:2)
Unfortunately it isn't all progress because there are people making up new religious bullshit all the time.
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Do you really think that Bush (or Clinton, for that matter, or any president) actually believes in God (as opposed to just saying so), particularly a God as specified in the Bible?
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Duke Nukem Forever (Score:2)
It won't work (Score:2)
1. Announce DNF time and again.
2. ???
3. Prophet.
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Religion is for the intellectually challenged, believers deserve to be pitied as the deluded fools they are, or despised when they attempt to foist their bizarre views on the rest of us, not locked up as a danger to society.
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There are, however other religious nuts who insist on ignoring both science and the pope.
Can we break those intermediate steps into seven phases or so and declare each of those a "day", get a copy to the Pope, and ....?
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Yeah, but what day? (Score:3, Funny)
Why does the universe appear empty? (Score:3, Insightful)
For example Earth's moon creates tides (and tide pools) and stabilizes the earth's seasons and axial tilt. According to the http://en.wikipedia.org/wiki/Giant_impact_hypothesis [wikipedia.org] the Moon was created as a result of a chance collision between the proto-earth and a Mars-sized object. Without the presence of the Moon the conditions might have been too harsh to support life.
As we learn more about how the solar system formed we will be better able to predict which stars might have life-bearing planets, so we can begin our own colonization of the galaxy (assuming humans can survive long enough to overcome war, disease and ecological destruction).
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My preferred answer to the Fermi paradox is a corollary of that:
Somebody had to be first. Looks like it's us.
(For this galaxy at least.)
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Have you ever wondered why we haven't
encountered
You are assuming you would recognize another "intelligent" being if you saw one. More further down.
intelligent
What do you mean by intelligent? Would developing an elaborate system of tunneling through rock be considered that? Please - no "I understand undergrad math" tangents - just because you understand prime numbers doesn't necessarily mean you're going to transmit them via radio.
life forms
what do you mean by life? Are crystalline structures alive? Do you believe i
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Colonization is not even a concept understood or appreciated by YOUR whole planet, not to mention a totally alien one. Us Xenians like to stay close to home. Why would we want to go to a marginally hospitable planet?
You are propagating a false stereotype of us Xenians. There are some of us who will colonize the galaxy! You evolutionarily doomed rejects will be left behind, or annihilated if you try to stop us! We'll have to rule the galaxy before the still puny humans can do it, or they will surely make us go the way of the dodo.
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Now, there are only two reasons why somet
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creationism (Score:2, Interesting)
It's been amusing over the past 10 years to see young-earth creationists squirm about the fact that cosmology has become a high-precision science, with the age of the universe going from having 50% error bars to 1.5% error bars. Now these folks have apparently measured the age of the solar system to within .05%. For a long time, young-earth creationists (YECs) were trying to say that the science was all very uncertain, so you couldn't trust the science. Hmm...now it appears that Archbishop Ussher's date for
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As a California taxpayer, is it too unreasonable of me to expect research funded by my tax money to be available freely?
What are you, some kind of communist?
Seriously though, I find it fascinating that they can be so sure the age of the solar system is within such a small (relatively speaking) margin of error. But I'm still a bit sceptical that at some point the theories they've based this on will be disproven. OTOH, IANAA and have no idea how they came up with this age, but even if it seems sound now every so often we discover we didn't actually know something we were sure we knew.
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Genesis 2:2 (Score:4, Funny)
to 4,568 million years ago, within a range of about 2,080,000 years
And on the seven hundred fifty-nine million seven hundred three thousand seven hundred seventy-third day God ended his work which he had made; and he rested on the seven hundred fifty-nine million seven hundred three thousand seven hundred seventy-third day from all his work which he had made.
shit (Score:3, Funny)
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So s/he has about 761 million years of sunday left.
oh Wait then it's monday agian!!!!!!
You weren't going to church anyway (Score:2)
OK, So What's Its Sign? (Score:2)
Maybe "slippery when wet"?
Proof of Birthdate Required (Score:4, Funny)
Now it's PARTY TIME and the drinks are on Sol!
well if you know the exact date (Score:2, Funny)
± 2,080,000 years? (Score:2)
20-into-9 (Score:2, Interesting)
Another slashdot article about a month ago suggested that the type of collisions needed to create our moon were relatively rare, based on dust analysis of new systems. However, 20 Mars-sized proto-planets seems like it would create pretty good chances for moon-creating collisions. (Although gas
And the solar system says... (Score:2)
01-01-1980 (Score:3, Funny)
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No.
Odd Unit of time.. thousands of millions of years? (Score:2)
It's a Shame They Can't Give Us an Exact Date :-) (Score:2, Funny)
Literalist Christian interpretation... (Score:3, Funny)
4568 million years vs. somewhere around 6000 yrs. That's only 6 orders of magnitude, I mean, really they're just ZEROES.
Re:Margin of Error (Score:5, Informative)
Incorrect. 2 million years is less than 0.05% of 4.5 billion years. Pretty damn precise, relatively speaking. Read the units on the text you cited.
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Re:Margin of Error (Score:4, Informative)
4,568,000,000 years ago, within a range of about 2,080,000 years.
That's an error margin of about 0.046%.
Re:Margin of Error - Give him a break! (Score:2, Funny)
Of course, the next sentence shows 2,080,000 and that just completely ruins this
Nevermind.
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The guy who I was replying to has been modded into the ground.
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Or, we have reached a confluence of realities where "threaded" and "flat" become one...
Probably the first.
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Give him a BREAK! (Score:5, Funny)
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Hmmm... I would be very interested in knowing your explanation for the nearly perfect straight line found in the first graph here [talkorigins.org]. If what you say is true, well... I wouldn't expect anything resembling a straight line. In fact, I found that graph to
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I'd say that Milton's a crank scientist, but if you believe him can you outline where you disagree with Richard Dawkin's review of Milton's bo
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I apologize. I shouldn't have assumed that you would just be parroting the vague and largely misinformed critiques of anti-evolution fringe cases from the popular press. Now that you've done so, though, I'm going to have to retract that apology.
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It's interesting, and he makes some good points, but apparently he's not done much of his research so very well (see esp. the s
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I appear to be mistaken. Milton just seems to be fond of fringe science. He's a rarity, but they do exist. Why, I'm not sure.
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wuh?
my degrees are in engineering (computer) and economics
For that you got Spider Sense? You barstard, all I got was a boring printed degreee certificate and a course transcript.
I'll bet you had an overdraft though, I didn't, neh neh [rasberry blowing sounds..].
having completed my mission to prove that all scientists are mature adults who only ever act sensibly, I depart.
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Scientists are frequently arrogant, perhaps because the validity of scientific findings are independent of whether or not you or anyone else agrees with them. Simply put, there's no real need for winning converts -- nor is it accurate to write it off as "a way of thinking".
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Is it me or does this sound like there's more than a coincidence? I mean, maybe God came into existance when some guys got wasted and one of the sentences babbled was "LOL, dare ya!"
Re:According to to Huckabee, 5000 BC. (Score:4, Informative)
Twice.
In a single sentence of just seven words.
First: Nowhere in the Bible, it says anything about the world being flat. We read about the waters being divided and the water being told to recede so land can form, but I can't remember a single word stating anything about the shape of Earth.
Second: The bible never ever mentions anything about a timeline or a date for the creation. What happened is that some Bishop in the 4th or 5th century tried to puzzle together a creation date for Earth, based on the various stories told therin and the acting figures, as well as their relation towards each other. Now, first of all he only had a rather bad translation of the original text to work with, second he tried to rely on the dates given (which also were a bit contradicting in the various books) and finally he took human life spans of his time as a standard. He made so many assumptions and filled the blanks with the information and rumors available to him about the ancient kingdoms of the east (which were spotty to say the least, and wrong in many cases) that as a statistician I can only dismiss his "calculations" as guesswork.
So, if you really want to rely on the Bible as the sole authority, you can neither claim that earth is flat nor that it's 5000 years old. Neither is by any means supported by the Book.
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Does seem that the writers made it just vague enough that people will fail to directly contradict it with newly discovered truths, but seemingly close enough to saying something that people do try to read meanings into it.
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I believe it is inferred from certain passages, for example when Satan takes Jesus up to the top of a mountain to tempt him, and shows him the whole world laid out below. On a spherical world, you can't see everything from the top of a mountain but you can if it's fl
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And if you take away decimal calculations, which were by no means invented in those times, then yes, Pi=3.
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