universe and theory

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netrox

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It's just mind boggling. On Sc, they talk about how the universe is created and they talked about dark energy/matter.

They cannot see dark energy but they think it's the main factor that makes the universe the way it is. They did computer simulations of the Big Bang with the known observed variables but they kept having a problem - after the big Bang, the universe is never formed. It's just mess. There's no order. It just can't form a meaningful shape. They repeated the experiments over and over - still NO galaxies. Nothing. Not even a sun. So, you'd think, "it has to be an intelligent designer" because it just doesn't work. Science demands predictions to be true.

Now, they think, "Ok, let me add 'dark energy' as a variable and put it in Big Bang simulation." To their shock, the universe was created just like what we see. They repeated and it's same over and over. Same structures. Galaxies were formed. Suns were created. Planets formed. All thanks to dark energy. If they removed "dark energy", universe was just a mess with no order at all.

It's just beyond my comprehension the vast amount of space in this universe.
 
Billions of Earth-size planets orbiting sun-like stars, researchers say - The Denver Post

Billions of Earth-size planets orbiting sun-like stars, researchers say
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LOS ANGELES — At least one in every four stars like the sun have planets about the size of Earth circling them in very close orbits, researchers said Thursday.

That means our galaxy alone, with its 200 billion sun-like stars, has at least 46 billion Earth-size planets orbiting close to the stars, and perhaps billions more farther out in the so-called habitable zone, said astronomer Andrew Howard of the University of California, a co-author of the paper. The discovery was reported in the journal Science.

The researchers' technique let them detect planets ranging from three to 1,000 times Earth's mass and orbiting as much as one-quarter of an astronomical unit from the host star. An astronomical unit, Earth's distance from the sun, is 93 million miles.

Planets that close to their stars are too hot to be habitable. But "it is not a huge stretch to speculate that nature probably makes a lot of these planets farther out," Howard said.
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We could use the Drake equation couldn't we?


The Drake equation states that:


where:

N = the number of civilizations in our galaxy with which communication might be possible;
and

R* = the average rate of star formation per year in our galaxy
fp = the fraction of those stars that have planets
ne = the average number of planets that can potentially support life per star that has planets
fℓ = the fraction of the above that actually go on to develop life at some point
fi = the fraction of the above that actually go on to develop intelligent life
fc = the fraction of civilizations that develop a technology that releases detectable signs of their existence into space
L = the length of time such civilizations release detectable signals into space.
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Drake equation - Wikipedia, the free encyclopedia
 
I find the Universe to be facinating. There is no way we are the only life out there.
 
Well, with computer simulations, we can predict if there are planets that are truly earth-like even if we cannot really see it. But I agree... there's no friggen way that there's only one planet that support life. Can't be. The dark energy is what makes life exist. But what's the dark energy? How does it exist? It's just amazing. But I think it's impossible for nothing to exist though - the energy just has to exist for eternity - no beginning or end although it is possible for matter to appear out of nothing but that requires energy tho.
 
[ame=http://www.youtube.com/watch?v=17jymDn0W6U]YouTube - The Known Universe by AMNH[/ame]
 
netrox said:
It's just mind boggling. On Sc, they talk about how the universe is created and they talked about dark energy/matter.
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What is "dark energy?"

Now, they think, "Ok, let me add 'dark energy' as a variable and put it in Big Bang simulation." To their shock, the universe was created just like what we see. They repeated and it's same over and over. Same structures. Galaxies were formed. Suns were created. Planets formed. All thanks to dark energy. If they removed "dark energy", universe was just a mess with no order at all.
Click to expand...
Do you mean the universe was formed instantaneously after the Big Bang? It didn't require eons of time to develop?

It's just beyond my comprehension the vast amount of space in this universe.
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Yes, way too much for our human minds to comprehend.
 
Wirelessly posted

Isn't it dark matter, not dark energy?

I don't know much about it because a Christian zealot tried to use it as proof of a higher being, so I chose to be ignorant about the subject.
 
How would something prove or disprove anything?

There are countless numbers of stars. At least one of them has a planet in orbit around it that has life (some would have you believe its intelligent life).


But, DON"T PANIC!

This small blue planet has hairless ape creatures that claim they are intelligent, but in reality spend their waking hours chasing after small green peices of paper.

This planet has — or rather had — a problem, which was this: most of the people living on it were unhappy for pretty much all of the time. Many solutions were suggested for this problem, but most of these were largely concerned with the movement of small green pieces of paper, which was odd because on the whole it wasn't the small green pieces of paper that were unhappy.

Many were increasingly of the opinion that they'd all made a big mistake in coming down from the trees in the first place. And some said that even the trees had been a bad move, and that no one should ever have left the oceans.
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The Hitchhiker's Guide to the Galaxy - Wikiquote
 
Jiro said:
something they came up with to explain the unknown.
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Are you saying it's not actually a quantifiable, observable, measurable, describable thing? That wouldn't be scientific. Maybe it's called something else. :dunno:
 
Reba said:
Are you saying it's not actually a quantifiable, observable, measurable, describable thing? That wouldn't be scientific. Maybe it's called something else. :dunno:
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Take the moon. Scientists cannot explain it being there. Yet there it is.
 
Reba said:
Are you saying it's not actually a quantifiable, observable, measurable, describable thing? That wouldn't be scientific. Maybe it's called something else. :dunno:
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It is quite common for scientists to believe in something, not because they can detect or measure it, but because they can measure and detect the effects of its existence.

On the upside a lot of interesting things have been discovered like this.

On the downside I think people start believing some of these things simply because it is an easy explanation that fits their view of the universe.

Frankly I like my electronics teacher's explanation of this phenomena, "We don't really know if this is what is actually happening, but it acts the same as if it were true so we are going to pretend it is true until we come up with something better."
 
Berry said:
Frankly I like my electronics teacher's explanation of this phenomena, "We don't really know if this is what is actually happening, but it acts the same as if it were true so we are going to pretend it is true until we come up with something better."
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:lol:
 
Reba said:
Are you saying it's not actually a quantifiable, observable, measurable, describable thing? That wouldn't be scientific. Maybe it's called something else. :dunno:
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nope. it's purely theoretical to explain something else.

Berry said it very well :)
 
souggy, you are right, it's dark matter. :)

Reba said:
Are you saying it's not actually a quantifiable, observable, measurable, describable thing? That wouldn't be scientific. Maybe it's called something else. :dunno:
Click to expand...

In astronomy and cosmology, dark matter is matter that is inferred to exist from gravitational effects on visible matter and background radiation, but is undetectable by emitted or scattered electromagnetic radiation.

That's the one of the explanations on how big bang are shaped into universe the way it is now.
 
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