Posts by SciManStev


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41) Message boards : SETI@home Science : How will the universe end - with a bang or with a whimper? (Message 1517119)
Posted 124 days ago by Profile SciManStevProject donor
From my understanding, there is not enough matter in the universe to cause a big crunch, and that possibility has been ruled out. I believe this is true even without out dark matter or dark energy, but the rate of expansion is increasing. As dark energy seems to be the reason, and there is not enough mass in the universe to collapse it, then it looks like we are on a one way trip.

One of the M-theory ideas, is that two branes are waving, and somehow come in contact at various places every few trillion years. The result would be another universe, however, if that were to occur within our existing universe, it would be like a fireworks display, with one bang filling in the gaps of the previous one.

Steve

Edit: of course our universe is only 13.75 billion years old, so trillions of years is still quite a way off.
42) Message boards : Science (non-SETI) : Jupiter's Red Spot is shrinking. (Message 1516957)
Posted 124 days ago by Profile SciManStevProject donor
http://time.com/101810/jupiters-trademark-great-red-spot-is-shrinking/?hpt=hp_t2

I just saw this, and knew that storm has been raging for 300 years.

Steve
43) Message boards : Cafe SETI : Raccoon Update XIX - All are welcome in the Critter Cafe (Message 1514488)
Posted 129 days ago by Profile SciManStevProject donor
My father sent me this link, and here seems to be a good place to share it.

https://www.facebook.com/video/embed?video_id=191369581019404

Steve
44) Message boards : Cafe SETI : The joke thread Part 4. (Message 1511929)
Posted 136 days ago by Profile SciManStevProject donor
I remmeber a lot of jokes but german jokes seldom work in english.

That's OK. I don't know how well English jokes translate into German.

Steve
45) Message boards : Science (non-SETI) : Big Bang or Big Blooper?? (Message 1511245)
Posted 138 days ago by Profile SciManStevProject donor

@Steve - fascinating, got any more on that?

I only learned that the galaxies in a certain quadrant of the universe were moving in one direction though one of the many science shows I watch. They did not suggest that it was caused by another universe, but working in my own frame of understanding, a very large concentration of gravity could cause that. As far as I know, there is nothing to prevent a second universe from forming, but the distance would be so far away, detecting it other than galaxies moving toward something may be forever impossible.

The only thing that is certain, it that this is not a static universe. There is only so much fuel in this universe, and even though it is a huge amount, it is not infinite. A static universe would not make any sense, and doesn't fit the evidence.

That leaves us with two possibilities for the eventual end of the universe. First is what is called the big crunch. the gravity of the existing system would eventually slow the expansion, and collapse the universe back to a tiny area. from the continued acceleration of the expansion, and the calculated amount of mass in the universe, this has been ruled out.

That leaves a forever expanding universe until all the stars go dark, and the black holes eventually evaporate by Hawking radiation.

I am not stating there is more than one universe, but physics as I understand it does not prevent the possibility.

Steve
46) Message boards : Science (non-SETI) : Big Bang or Big Blooper?? (Message 1510525)
Posted 139 days ago by Profile SciManStevProject donor
I can add a tiny bit of evidence to the bubble theory.
One section of our known universe seems to be slowly moving to a single direction. This is many galaxies, in a particular quadrant, seeming to move in a direction different than the normal expansion. The only way I know how to explain that, is by some other huge gravitational force. Perhaps, there has been another bubble, but so far away, we can only detect the edge of our own known universe moving towards it, even though it might be further away than our perception allows.

This is weak evidence at best, but plausible,

Steve
47) Message boards : Science (non-SETI) : Big Bang or Big Blooper?? (Message 1507428)
Posted 147 days ago by Profile SciManStevProject donor
I hesitated to open that can of worms but the statement that most Americans don't believe in the big bang theory or any scientific explanation for how things began begs the question, why? I saw on the NG channel last week a segment of a program about Noah's ark where a fellow conducts rafting tours of the Grand Canyon claiming it is evidence that the world is only 4600 yrs. old plus or minus. This kind of belief in this day and age truly mystifies me.

I have come to the conclusion that the real question is not whether the U.S. will make it to the end of the century, but rather how did we make it this far?

+1

Steve
48) Message boards : Science (non-SETI) : Big Bang or Big Blooper?? (Message 1506015)
Posted 151 days ago by Profile SciManStevProject donor
In my mind, the task is to follow the evidence. The universe is expanding, which states that it was smaller in the past. The rate of expansion is increasing, and we still don't know why. The observable evidence, including the radio background radiation being everywhere, indicates a very dense beginning. Density of that magnitude means extreme heat. With that much heat and density knowledge of physics grows weak. That is why we can understand the physics a trillionth, of a trillionth, of a trillionths of a second after the initial event, and through the present and future, but not at or before the event.

In a court of law, lawyers do their best to present evidence, and a determination by judge or jury is based on the evidence presented. There are many cases where years after a conviction, new evidence comes to light that can sometimes clear the person of having committed the crime. The best tool we have is to follow the evidence, and test it as we can. By performing experiments in physics, coupled with observation, the result that most fits is that there was a huge explosion that started everything.

I have also heard it described as a version of string theory. The basis for string theory is that matter changes based on the frequency of tiny strings. There are 6 different string theories, and they are not compatible with each other. By involving 11 dimensions, the math works out, and the strings are replaced by membranes. If two membranes were oscillating next to each other, and touched, that would change the frequency of their vibrations at the point of contact. It is like two sheets blowing in the wind. The point at which the sheets touched like a ripple, would become the existing universe. This is only a possible theory, like the big bang. I am not aware of any other theories than meet the observable or mathematical evidence.

A brief time line of events:
The initial event was 13.75 billion years ago.

The earth was formed 4.5 billion years ago, and is still forming today.

Man was first on the earth roughly 1 million years ago.

All recorded history spans just a few thousand years.

In 5 to 7 billion years, our sun will use up its hydrogen fuel and expand into a red giant, engulfing and incinerating the earth.

At some point all the stars will run out of their fuel, and die one of several possible deaths due completely to their size.

Red dwarf stars, which are smaller than typical stars, burn cooler, and thus will last for trillions of years instead of billions.

Brown dwarf stars will last longer, and black holes will be the last remnants of the universe, and eventually they will evaporate.

The total time is about 10^100 years.

The entire existence of this planet, and all life on it is only about a millisecond out of a trillion year time span. This is where we get by following the evidence. If our perception of the evidence changes, then we may more accurately understand where we came from, where we are, and where we are going.

Steve
49) Message boards : Science (non-SETI) : Big Bang or Big Blooper?? (Message 1505768)
Posted 151 days ago by Profile SciManStevProject donor
This is a very good explanation of where the Universe came from, and what its state will be. Of course, our knowledge of actual events is changing all the time, but this is some good science. The Interactive section is also quite good.

http://www.pbs.org/wgbh/nova/space/history-universe.html

One point that stands out very clearly, is that the earth is really an insignificant lump of rock that will disappear hundreds of trillions of years before the universe goes dark and evaporates.

Steve
50) Message boards : Cafe SETI : Raccoon Update XIX - All are welcome in the Critter Cafe (Message 1505418)
Posted 152 days ago by Profile SciManStevProject donor
Angela, you have the west coast covered. I do my best to feed the east coast raccoons, but I only see them in infrared, so it is hard to name them.

My job is to keep putting out food, and keep them coming here. Actually, I feed every animal that comes in my yard. Foxes, skunks, porcupines, deer, turkeys, pheasants, bear, and even stray cats.

I feed snakes also, but only pre-frozen food......

Steve
51) Message boards : Number crunching : Correct delete of HDD before new OS install? (Message 1504402)
Posted 155 days ago by Profile SciManStevProject donor
I would use something like Partition Master, and Delete the partition. You can do a secure drive wipe at the same time. When the disk has no partition, install Win 8, and it will build the partition to it's requirements, before formatting it exactly as it wants. When reinstalling an OS, or installing a fresh OS, I always start with a non-partitioned hard drive.

Steve
52) Message boards : Politics : Crimea 2 (Message 1502468)
Posted 159 days ago by Profile SciManStevProject donor
Well, saving gas for future to warm that ice age instead of just burning it now will be good thing too. Still looks like win-win proposal ;)

Agreed. 100%

Steve
53) Message boards : Politics : Crimea 2 (Message 1502465)
Posted 159 days ago by Profile SciManStevProject donor
That would be real good and not only for Ukraine but for Earth as whole - burning produces lot of CO2 and we have beed told constantly that warming effect grows...

This is true, but also, in 1500 years, we will be in another ice age. The "warming" is actually delaying that a few hundred years, but in 1500 years, the earth's orbit and tilt, will bring us to another ice age.

I guess it what we do between now and then that could alter things, if only to a portion of the natural occurrences.

Steve
54) Message boards : Politics : Crimea 2 (Message 1501943)
Posted 160 days ago by Profile SciManStevProject donor
What wasn't planned was how long it would take, and still not have control of Iraq's oil. I consider that a huge blunder on the US's part, and it never should have happened.
The US doesn't need foreign oil as much as it did only a decade ago because of franking. Canada is begging US to take more and the US at present burns off 30% of the Natural Gas it pumps along with oil because there is no place to put it.

The Western World is treating this "crises" with a big yarn, nether gold or oil has gone up.

You are right about the fracking reducing the US dependance on foreign oil sources.
Things have changed a lot in the last 10-15 years.

Steve
55) Message boards : Politics : Crimea 2 (Message 1501933)
Posted 160 days ago by Profile SciManStevProject donor
http://globalpublicsquare.blogs.cnn.com/2014/04/09/russia-trying-to-create-climate-of-chaos-in-ukraine-zakaria/?hpt=hp_t3

This is a reasonably well balanced opinion. Fareed Zakaria is well known for understanding the situations around the world.

Steve

I'm afraid not.
He allows factological errors that makes his opinion and fairness very questionable:

We invaded Iraq, we invaded Afghanistan, and Putin still invaded Georgia and he still annexed Abkhazia and South Ossetia.

Thank you!
All I want is an unbiased account of what is happening. I know the US has done some really stupid things in the past. The second war with Iraq, was all about oil, and was planned long before 911. What wasn't planned was how long it would take, and still not have control of Iraq's oil. I consider that a huge blunder on the US's part, and it never should have happened.

Steve
56) Message boards : Politics : Crimea 2 (Message 1501922)
Posted 160 days ago by Profile SciManStevProject donor
http://globalpublicsquare.blogs.cnn.com/2014/04/09/russia-trying-to-create-climate-of-chaos-in-ukraine-zakaria/?hpt=hp_t3

This is a reasonably well balanced opinion. Fareed Zakaria is well known for understanding the situations around the world.

Steve
57) Message boards : Number crunching : Recommend CPU/GPU over-temp throttle program (Message 1501674)
Posted 161 days ago by Profile SciManStevProject donor
http://www.efmer.eu/boinc/

Steve

Edit: I missed the part where you already had this.
58) Message boards : Science (non-SETI) : How do you measure time in space? (Message 1499496)
Posted 166 days ago by Profile SciManStevProject donor
A light year is still linked to earth measure, ie. the year. On a planet with a longer year their definition of a light year would be longer.

As long as the end result is equal. It is a specific distance, whether defined in miles, kilometers, light years, or any other unit of measure.

Steve
59) Message boards : Politics : Crimea (Message 1498194)
Posted 169 days ago by Profile SciManStevProject donor
This is just an opinion piece from CNN. I don't know if it is valid or not.

http://www.cnn.com/2014/03/31/opinion/russia-euphoria-crimea/index.html?hpt=hp_t4

Steve
60) Message boards : Science (non-SETI) : Asteroids (Message 1495705)
Posted 175 days ago by Profile SciManStevProject donor
http://www.cnn.com/2014/03/26/tech/innovation/asteroid-rings/index.html?hpt=hp_t2

Steve

Edit: Oops! It was already posted in the new discovery thread.


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