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Hubble's deepest shot is a puzzle
BBC News ^ | 9/23/04 | Staff

Posted on 09/24/2004 8:17:42 AM PDT by Michael_Michaelangelo

Scientists studying the deepest picture of the Universe, taken by the Hubble Space Telescope, have been left with a big poser: where are all the stars? The Ultra Deep Field is a view of one patch of sky built from 800 exposures.

The picture shows faint galaxies whose stars were shining just a few hundred million years after the Big Bang.

"Our results based on the Ultra Deep Field are very intriguing and quite a puzzle," says Dr Andrew Bunker, of Exeter University, UK, who led a team studying the new data."

"They're certainly not what I expected, nor what most of the theorists in astrophysics expected."

"There is not enough activity to explain the re-ionisation of the Universe," Dr Bunker told the BBC. "Perhaps there was more action in terms of star formation even earlier in the history of the Universe - that's one possibility.

"Another exciting possibility is that physics was very different in the early Universe; our understanding of the recipe stars obey when they form is flawed."


(Excerpt) Read more at news.bbc.co.uk ...


TOPICS: Extended News; Miscellaneous; News/Current Events
KEYWORDS: galaxies; hubble; puzzle; space; ultradeepfield; universe
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To: Izzy Dunne

So, really some of the light from what appears to be stars has taken so long to reach my eyes that some of those stars have already burned out? So, perhaps what is going on in the farthest reaches of the universe (and closer) is something else entirely than we think because the light from those current celestial bodies hasn't had time to reach my eyes yet? Perhaps much more has burned out and come to an end than we might think.


161 posted on 09/24/2004 6:54:55 PM PDT by Twinkie
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To: RadioAstronomer
No I'm not talking out of my hat. I subscribe to Sky & Telescope and Night Sky, and I read several astronomical websites on a regular basis. One article after another after another, astronomers are always searching for the origins of the universe. The 'big bang' is not just a theory to them. It's a fact.

I'm not saying there are no astronomers that believe in God, but I'd bet most don't think God had anything to do with the creation of the universe. I have NEVER seen them mention God, other than to dismiss him.

A good example is in an S&T article about the 'anthropic principle' and how everything in the universe had to be 'just right' for us to be here. In a five page article, this is what they say about God; "And some people, inevitably use anthropic fine-tuning as an argument for the existence of God - presumably a benevolent God who 'monkeyed with the laws of physics'...so as to produce a universe capable of sustaining beings like us" That's it. They completely throw that belief aside and detail how perfectly precise things have to be in order for life to be sustained.

Don't get me wrong S&T is an excellent magazine and I devour every issue. But never - ever do they even suggest that the heavens could be the work of God's hand.

162 posted on 09/24/2004 7:32:57 PM PDT by CarolAnn
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To: Michael_Michaelangelo

It's Bush's fault.


163 posted on 09/24/2004 7:38:51 PM PDT by UnbelievingScumOnTheOtherSide (Give Them Liberty Or Give Them Death! - Islam Delenda Est! - Rumble thee forth...)
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To: RadioAstronomer
And yes, I do know a few astronomers, but I don't hang out with them. Much less discuss religion with them. The circumstances behind my being acquainted with them are too complicated and boring to go into, and have nothing to do with astronomy. But let's just say it was inevitable that we would be in conflict. I'm just saying, I have never - ever read anything in any publication or on any website that acknowledges God. Everything is about discovering the origins of our universe. I don't have to do that. I just get to be in complete wonder about what God can do.

I didn't mean to insult you. I probably shouldn't use such broad terms. But you have to admit there's a mindset in that field that IS elitist and not very comfortable with the thought that maybe God created the universe. I don't see how my belief in God is more outrageous than their belief that the universe was created from nothing and all of it by chance.

164 posted on 09/24/2004 7:57:15 PM PDT by CarolAnn
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To: All
Radical Antarctic telescope 'would outdo Hubble'

A novel Antarctic telescope with 16-m diameter mirrors would far outperform the Hubble Space Telescope, and could be built at a tiny fraction of its cost, says a scientist from the Anglo-Australian Observatory in Sydney, Australia. Link



165 posted on 09/24/2004 8:31:13 PM PDT by Michael_Michaelangelo
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To: trebb
Amen, brother. I hope to see you there...

Roger that, my friend.

MM

166 posted on 09/24/2004 9:12:12 PM PDT by MississippiMan (Americans should not be sacrificed on the altar of political correctness.)
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To: Bigh4u2
"Oh no!!! We're living inside Michael Moore's stomach! LET ME OUT!"
Through which end?
167 posted on 09/24/2004 9:26:33 PM PDT by GSlob
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To: Hunble

I did a Google on your screen name and sure enough, it said hunble was a common misspelling of the word humble. <(•¿•)>


168 posted on 09/25/2004 7:32:37 AM PDT by itsahoot (Sometimes the truth hurts, sometimes it makes a difference, but not often.)
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To: frgoff
Very true, but the individual I was trying to educate Indoctrinate was already straining his neurons.

You Screen name would indicate that your are a not a reasonable man, guess you are trying to live up to it.

169 posted on 09/25/2004 7:40:09 AM PDT by itsahoot (Sometimes the truth hurts, sometimes it makes a difference, but not often.)
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To: frgoff

Interesting, I remember when Carl Sagan showed a tesseract on his show, "Cosmos," as well as the book of the same name. Also what complicates the issue is that the 4D cube is being shown as a "shadow" in the 3D world we live in but we see it on a 2D LCD (or CRT, I'm on a laptop now) screen. B-) This stuff fascinates me but I admit it can give one a headache.


170 posted on 09/25/2004 8:02:16 AM PDT by Nowhere Man ("Laws are the spider webs through which the big bugs fly past and the little ones get caught.")
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To: RadioAstronomer

The "Festival of Silliness & Ignorance" has suddenly gone dead. I wonder what's up with that?


171 posted on 09/25/2004 4:21:24 PM PDT by longshadow
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To: CarolAnn
No I'm not talking out of my hat. I subscribe to Sky & Telescope and Night Sky, and I read several astronomical websites on a regular basis. One article after another after another, astronomers are always searching for the origins of the universe. The 'big bang' is not just a theory to them. It's a fact.

First, S&T is a great magazine, but it is not a scientific journal. Second, no one uses the word “fact”. Theory is what is used in scientific circles.

I'm not saying there are no astronomers that believe in God, but I'd bet most don't think God had anything to do with the creation of the universe. I have NEVER seen them mention God, other than to dismiss him.

Hmmm…. Please cite a link here if you would.

A good example is in an S&T article about the 'anthropic principle' and how everything in the universe had to be 'just right' for us to be here. In a five page article, this is what they say about God; "And some people, inevitably use anthropic fine-tuning as an argument for the existence of God - presumably a benevolent God who 'monkeyed with the laws of physics'...so as to produce a universe capable of sustaining beings like us" That's it. They completely throw that belief aside and detail how perfectly precise things have to be in order for life to be sustained.

The universe is the way it is. We evolved in this universe. If any of those variables were different, obviously we would either not be here or be “different”. This does not necessarily posit a deity however.

Don't get me wrong S&T is an excellent magazine and I devour every issue. But never - ever do they even suggest that the heavens could be the work of God's hand.

Why would a scientific magazine use God in an argument or article? This is not the goal of such a magazine.

172 posted on 09/26/2004 9:17:41 PM PDT by RadioAstronomer
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To: itsahoot
And you have proved this, how?

See here:

Speed of light

"The speed of light is a fundamental constant of nature. The word constant, of course, means something that is unchanging. In a sense, the speed of light can be considered to be derived from other constants - most directly from the permittivity and permeability of free space, but these constants, too, are related to other constants such as the charge on an electron, Planck's constant, and the fine structure constant. So if the speed of light were changing, these other constants wouldn’t be constant anymore and this would show up in many kinds of experiments and observations in physics, astronomy, and chemistry - indeed, everything, for atoms and molecules would not be as we know them today. If the speed of light was faster in the past, then we should see this in the ratios of spectral lines of distant quasars coming from different types of atomic transitions. The resulting frequencies have different dependencies on the electron charge and mass, the speed of light, and Planck's constant, and we can compare these to their present values on earth. Needless to say, the spectral signature of elements found in the quasars agrees perfectly with those here on the earth today."

173 posted on 09/26/2004 9:22:46 PM PDT by RadioAstronomer
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To: RadioAstronomer
I believe new research calls that into question, check this out.

ON THE CONSTANCY OF THE SPEED OF LIGHT

174 posted on 09/27/2004 9:18:10 AM PDT by itsahoot (Sometimes the truth hurts, sometimes it makes a difference, but not often.)
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To: itsahoot

I saw it. Its been long refuted as junk science. See:

http://www.talkorigins.org/faqs/c-decay.html

http://www.talkorigins.org/faqs/hovind/howgood-add.html#A6


175 posted on 09/27/2004 11:03:30 AM PDT by RadioAstronomer
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To: Michael_Michaelangelo

Hubble forgot to press the flash button.


176 posted on 09/27/2004 11:08:13 AM PDT by jamz
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To: Michael_Michaelangelo
Sherlock Holmes and Dr. Watson went on a camping trip. After a good meal and a bottle of wine they lay down in their tent for the night and went to sleep. Some hours later, Holmes awoke and nudged his faithful friend awake.

"Watson, look up at the sky and tell me what you see." Watson replied, "I see millions and millions of stars." "What does that tell you?" Holmes questioned. Watson pondered for a minute. "Astronomically, it tells me that there are millions of galaxies and potentially billions of planets. Astrologically, I observe Saturn is in Leo. Logically, I deduce that the time is approximately a quarter past three. Theologically, I can see that God is all-powerful and that we are small and insignificant. Meteorologically, I suspect that we will have a beautiful day tomorrow.

"Is that all?" Holmes asked. "Yes," Watson replied. "Why, am I missing something?" Holmes was quiet for a moment, then spoke: "Watson, you idiot. Someone has stolen the bloody tent!"

177 posted on 09/27/2004 11:09:14 AM PDT by Tribune7
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To: RadioAstronomer
Its been long refuted as junk science. See:

By BBC News Online science editor Dr David Whitehouse

Scientists say they have slowed light to a dead stop, stored it and then let it go again.

Normally light is the fastest thing there is, travelling at about 299,000 kilometres a second (186,000 miles a second). But it is slowed slightly when it moves through some materials, such as glass.

The researchers have taken this effect to the extreme and say they have effectively made a beam of light stop after it entered a specially designed gas chamber.

The experiment has been hailed as a landmark that could pave the way for faster computers and totally secure communications.

All stop

The breakthrough has been achieved by two independent teams of researchers. One was led by Dr Lene Vestergaard Hau, of Harvard University, and the other by Dr Ronald Walsworth, of the Harvard-Smithsonian Center for Astrophysics, both in Cambridge, Massachusetts, US.

Dr Lene Hau has worked to make light travel slower and slower

Two years ago, Dr Hau surprised the world when she slowed light to about 60 kph (38 mph) by passing it through chilled sodium gas. And then last year, she reported slowing light down to 1.6 kph (one mile an hour) - slower than a slow walk.

Transparent media like water or glass can slow a light beam slightly. The effect causes the phenomenon of refraction and is the basis for lenses and prisms.

To stop light altogether, the scientists have utilised a similar but far more powerful effect. The researchers cooled a gas of magnetically trapped sodium atoms to within a few millionths of a degree of absolute zero (-273 deg C).

Huge impact

This would normally be opaque to light. But by illuminating it with a laser called a coupling beam, it can be made transparent, thereby allowing another laser pulse to pass through it. It is a process known as electromagnetically induced transparency.

And, astonishingly, if the coupling laser is turned off while the probe pulse is inside the gas cloud, the probe pulse stops dead in its tracks. If the coupling beam is then turned back on, the probe pulse emerges intact, just as if it had been waiting to resume its journey

The biggest impact of this work could be in the burgeoning field of quantum computing and quantum communication.

In theory, quantum computers, in which information is stored in the quantum states of atoms, could be very much faster than existing machines. And quantum communications could never be eavesdropped.

The research is to be published in forthcoming issues of the journal Nature and the Physical Review Letters.

Article here

178 posted on 09/27/2004 11:58:34 AM PDT by itsahoot (Sometimes the truth hurts, sometimes it makes a difference, but not often.)
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To: itsahoot

I am well aware of the speed of light changes in different mediums. This is why you see a pencil "bend" when it is dipped into water.

What I am referring to is the speed of light in a vacuum.

That is a constant by definition.


179 posted on 09/27/2004 12:23:56 PM PDT by RadioAstronomer
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To: RadioAstronomer

And yet the Festival continues?


180 posted on 09/27/2004 5:32:07 PM PDT by longshadow
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