Milky Way Galaxy

harry · Post by **harry** » Fri Aug 10, 2007 9:19 pm

Hello All

What do we know about the Milky Way?

http://www.viewzone.com/milkyway.html

Imagine the shock of growing up in a loving family with people you call "Mum" and "Dad" and then, suddenly, learning that you are actually adopted!

This same sense of shock came as scientists announced that the Sun, the Moon, our planet and its siblings, were not born into the familiar band of stars known as the Milky Way galaxy, but we actually belong to a strange formation with the unfamiliar name of the Sagittarius Dwarf galaxy!

Could this be true and if it is so, think about the billions of years it would have taken.

harry · Post by **harry** » Fri Aug 10, 2007 9:24 pm

Hello All

This maybe of interest to some

MAP of the MW

FieryIce · Post by **FieryIce** » Sat Aug 11, 2007 5:07 pm

Yes it was of interest.
Thank You

craterchains · Post by **craterchains** » Sat Aug 11, 2007 5:43 pm

uhmmm, yes, thank you.

BMAONE23 · Post by **BMAONE23** » Sat Aug 11, 2007 6:37 pm

Here is another similar map of the Milky Way

BMAONE23 · Post by **BMAONE23** » Sat Aug 11, 2007 6:44 pm

just kidding but check this out
http://www.bnsc.gov.uk/content.aspx?nid=5621

http://www.ras.ucalgary.ca/CGPS/where/plan/

http://cassfos02.ucsd.edu/public/tutorial/MW.html

http://shop.nationalgeographic.com/gate ... ewall.html

this one is really nice
http://www.atlasoftheuniverse.com/milkyway.html

harry · Post by **harry** » Sun Aug 12, 2007 11:58 am

Hello BMAone23

Great links,,,,,,,,,,,,,,,good that you posted them, rather than me.

I have many more if you want them.

The deeper you go into the subject the more we find that the Milky Way has also gone through galaxy collision.

Darn, its becoming very interesting.

It does not matter how many papers I read.

The more I read the more I find that I know very little.

astro_uk · Post by **astro_uk** » Wed Aug 15, 2007 1:32 pm

The bad astronomer had a decent post up a few week debunking the idea that the Sun formed in the Sagitarius dwarf.

You can find links here:

http://www.badastronomy.com/bablog/2007 ... -followup/

harry · Post by **harry** » Thu Aug 16, 2007 5:30 am

Hello All

What is your opinion on this link?

http://www.viewzone.com/milkyway.html

"This first full-sky map of Sagittarius shows its extensive interaction with the Milky Way," Majewski said. "Both stars and star clusters now in the outer parts of the Milky Way have been 'stolen' from Sagittarius as the gravitational forces of the Milky Way nibbled away at its dwarf companion. This one vivid example shows that the Milky Way grows by eating its smaller neighbors."

starnut · Post by **starnut** » Thu Aug 16, 2007 9:07 pm

harry wrote:Hello All

What is your opinion on this link?

http://www.viewzone.com/milkyway.html

"This first full-sky map of Sagittarius shows its extensive interaction with the Milky Way," Majewski said. "Both stars and star clusters now in the outer parts of the Milky Way have been 'stolen' from Sagittarius as the gravitational forces of the Milky Way nibbled away at its dwarf companion. This one vivid example shows that the Milky Way grows by eating its smaller neighbors."

Why should we pay attention to the ignorant rubbish put forth by non-scientists and ideologues in Web sites such as Viewzone?

craterchains · Post by **craterchains** » Fri Aug 17, 2007 9:13 am

A quote from the page in question, to answer "starnut", and to affirm that Dr. Phil Plait, a so called scientist, is only a deceptive liar and slanderer.

From Dan Eden:

Back when the telescope was first invented, those who observed the movement of the planets postulated that the Earth was not the center of "God's creation" and were criticized, imprisoned and even put to death as heretics. The criticism was usually vague and simply stated that things were not that way because... everyone should know they it's just not that way... A paradigm is always difficult to change and seldom yields to a newer idea without much dialog and discussion.

When we published this story in June of 2007 we hoped it would initiate some thought and perhaps get people asking questions. It sure did that! But we also received comments from such sources as badastronomy.com which amounted to declaring we were wrong because... everyone should know it's just not that way...

Viewzone understands that our readers are not idiots and can decide for themselves if certain theories or interpretations are worthy of consideration. A majority of the feedback we received was positive. As always, we will continue to report new ideas and let you use your own intellect, intuition and common sense. Thanks.

Dan Eden.

Now a quote from the BA it's self,

I am an astronomer, writer, and skeptic. I likes reality the way it is, and I aims to keep it that way. My real name is Phil Plait, and I run the Bad Astronomy website.

FOCLMAO

That's why, , , , , , , ,

harry · Post by **harry** » Sat Aug 18, 2007 10:50 am

Hello All

The plot thickens.

The things we learn about other people.

The question is,,,,,,,,,,,,,,,,,What is the origin and how was the Mily Way formed.

We notice many Dwarf galaxies around the Mily Way and there are questions of influence and collision.

harry · Post by **harry** » Sat Aug 18, 2007 11:15 am

Hello All

http://cas.sdss.org/dr6/en/proj/basic/g ... ngfork.asp
The Hubble Tuning Fork

In the early 1900s, Edwin Hubble looked at galaxies like the ones you saw in the last few pages. Hubble classified the galaxies using a "tuning fork" system. The elliptical galaxies made up the fork's handle, and spiral galaxies and barred spiral galaxies make the fork's prongs. So his classification system looked like this:

See Link

Hubble believed that galaxies started at the left end of the tuning fork when they were young, and moved toward the right as they aged. Therefore, he called elliptical galaxies "early galaxies" and spiral galaxies "late galaxies".

We now know he was mistaken in this belief. Spiral galaxies have a great deal of rotation and elliptical galaxies do not. There is no way an elliptical galaxy could spontaneously begin rotating, so elliptical galaxies cannot turn into spiral galaxies. Although Hubble was wrong about his theory of galaxy evolution, the confusing names have stuck: today, elliptical galaxies are still referred to as early galaxies and spirals as late galaxies.

What if Hubble was partially correct and the corrrection partialy correct.

Take away the "spontaneously" word and give it time, what would happen.

Elliptical to Spiral to Elliptical to spiral ,,,,,,,,,,,,,a never ending process of recycle and evolution.

When we look at the neucleon of each galaxy we notice a formation that depends on the size of the neucleon.

Just a thought,,,,,,,,,,,,,,,,,thinking aloud.

zeilouz · Post by **zeilouz** » Mon Aug 20, 2007 10:40 am

wow nice post d..i like it..

harry · Post by **harry** » Mon Aug 20, 2007 10:50 am

Hello Zeilouz

If you like that, than look up google,,,,,,,,,,,,,millions of links

Galaxy Types

Galaxy collisions

Let me know what you think

zeilouz · Post by **zeilouz** » Mon Aug 20, 2007 11:03 am

Well its pretty interesting to know that we are not from the milky way but instead we are from a drawf galaxy..

Maybe should tell my teacher about it soon.. 8)

harry · Post by **harry** » Wed Aug 22, 2007 7:15 am

Hello Zeilous

In my opinion

Our solar system is part of the evolution of the Milky Way.

Solar system origin goes back about 5 Gyrs when another star went supernovae, leaving behind a compacted core that a solar envelope formed on.
Google for sun's origin.

Our galaxy has had several collsions in the past and is also influencing a a few dwarf galaxies that form saterlites around the MW.
Google for the Milky Way

Doum · Post by **Doum** » Wed Aug 22, 2007 11:58 pm

Hey Zealous,

Dont beleive all what Harry is saying cause he said it himself:

"In my opinion
Solar system origin goes back about 5 Gyrs when another star went supernovae, leaving behind a compacted core that a solar envelope formed on.Google for sun's origin."

So you better start looking for books and make your own logic opinion.

Anyone can write in wikipedia or google. And they can write anything they want also. It does not mean it is the truth because it is writen there. So you need to use logic (And science fact) from what you read to be able to interpret what you read.

Hey Harry,
Still in those line of thought. Dont get mad, all i want is for that young person to not get laugh at if he talk about what you said to his teacher. Let his teacher do his job and then he will decide what to beleive when his knowledge get better or not.

Bye

harry · Post by **harry** » Thu Aug 23, 2007 7:27 am

Hello Doum

Smile,,,,,,,,,,,,,Not mad

Just read on mate.

Your right what I say is an opinion.

The opinion is shared with many cosmologists

Just Google for it.

harry · Post by **harry** » Thu Aug 23, 2007 9:43 am

Hello All

Links and info on the Milky Way.

http://chandra.harvard.edu/photo/category/milkyway.html

http://www.berkeley.edu/news/media/rele ... warp.shtml

BERKELEY – The most prominent of the Milky Way's satellite galaxies - a pair of galaxies called the Magellanic Clouds - appears to be interacting with the Milky Way's ghostly dark matter to create a mysterious warp in the galactic disk that has puzzled astronomers for half a century.

http://www.virginia.edu/topnews/release ... -2003.html

Thousands of stars stripped from the nearby Sagittarius dwarf galaxy are streaming through our vicinity of the Milky Way galaxy, according to a new view of the local universe constructed by a team of astronomers from the University of Virginia and the University of Massachusetts.

http://www.researchmatters.harvard.edu/ ... cle_id=764

Galactic collision reveals fate of Milky Way galaxy
New generation of stars born

http://www.maa.agleia.de/Messier/E/More/mw_sat.html

The Satellite Galaxy System of the Milky Way Galaxy

http://www.iiap.res.in/dmw.html

Decomposition of the Milky Way Galaxy: kinematics and abundances

Results refute earlier suggestions that the thick disk is a simple extension of thin disk at the metal-poor end or of the halo at its metal-rich end. Instead, results suggest a major merger event in the early epoch of our Galaxy i.e 10-12 Gyrs ago. This is illustrated in Figure 2. Element ratios [Mn/α] and [Fe/α] are shown against [α/H]. The arrow AB is the evolution of thick disk. At point B a major merger of a very metal-poor dwarf galaxy with our Galaxy might have occurred. The resultant metal-rich gas in our Galaxy and the metal-poor gas from the victim might be the fodder for the thin disk star formation (point D). The jump CD can be interpreted due to the delayed SNI (Fe contributor) in the thick disk. The arrow DE (notice the slope) is the evolution of thin disk with major contributions from SNI products. These results are in concurrence with the recent predictions from hierarchical ∧–CDM model for structure formation. ( B. E. Reddy)

http://www.spaceref.com/news/viewnews.html?id=678

Giant Stellar Structure Surrounds the Milky Way Galaxy

Ultimately detailed studies like this, of the structure of the Milky Way, and other galaxies, tell us how they came into being and have evolved over the lifetime of the universe. If the old stars in this ring-like structure are inherently part of the outer disk, they pose an interesting challenge for galaxy formation models; alternatively if they are the remnants of a disrupted satellite, they will provide a first-hand opportunity to study the effects of massive accretions on the disks of large galaxies.

http://www.telemedical.com/origins2.htm
The Formation and Transformation of the Milky Way Galaxy

Our Galaxy was born about 12.3 billion years ago. (About 1-3 Billion Years after the Big Bang). One hypothesis for its evolution is that it gained in size from merging with Sister Galaxies, as well as by Acquiring Dwarf Galaxies and Free Star Clusters. However it may have lost some mass from tidal forces associated with passing close to Andromeda and Other Larger Galaxies. The path that it has taken over the past 12.3 Billion years could be relevant to biological evolution. Particularly important events would be its possible prior close encounter with Andromeda 10 Billion Years ago, Collision and Merger with a Sister Galaxy about 10 Billion Years Ago, and Interaction and Acquisition of the Sagitarrius Dwarf Galaxy or Canis Major Dwarf Galaxy starting about 2 Billion Years Ago.

See also Galaxy Collisions

Galaxy Collsions are very frequent and by all chances our galaxy has evolved via collisions.

FieryIce · Post by **FieryIce** » Thu Aug 23, 2007 12:58 pm

harry, I don't want to sound rude but that previous huge post, can you state your information in a paragraph or two so we can tell you know and understand what you are posting.

zeilouz · Post by **zeilouz** » Thu Aug 23, 2007 1:38 pm

Many scientist say that our solar system is in the milky way galaxy,but,in some certain places,some scientist might say that our solar system is from a dwarf galaxy,it is ur opinion harry but it should always be right,isnt it?

We have our own thoughts,some thoughts are correct n some are not,

But,regardless to say,many scientist believe that we are from the milky way galaxy,the existence of a dwarf galaxy is not yet to be known,maybe should wait nasa to prove it..~.~

FieryIce · Post by **FieryIce** » Thu Aug 23, 2007 9:01 pm

wait nasa to prove it..~.~

ROFLMAO!!

harry · Post by **harry** » Fri Aug 24, 2007 6:35 am

Hello All

Our solar system is within the Mily Way Galaxy.

The evolutiion of the Milky Way is another issue. How it came about, there are varies theories.

The Milky Way has several dwarf galaxies cloes around it: The types of collsions that have occured in the past, well thats up for discussion.

How do you think the Milky Way evolved to such a size and how do you think huge black holes have grown bigger.

They just do not pop up out of thin air.

FieryIce · Post by **FieryIce** » Fri Aug 24, 2007 5:44 pm

Interesting, how NASA's Lunar Eclipses chart (bottom of the page) ends in 2012 like the Mayan calendar does!?

Total Lunar Eclipse