a larger world

[olivebird111]

Columbus thought that there was only one mass land, and that is Asia and Europe.<br />many years later the scientific revolution tells of the obits and how Earth's path is around the sun.<br />well the bigger story is that...<br />what if the sun is just a small part of a big system. Like how the universe moves, even if the sun doesnt move like a really big center system controls many solar systems and then the center makes everything move together, because it moves, and we cant really feel it because we are just a really small part of everything.<br />And then the really big system connects to the center of our galaxy.

 

[dragon04]

<font color="yellow">what if the sun is just a small part of a big system.</font><br /><br />The sun <b>is</b> a small part of a big system. All the bodies in the solar system orbit the sun. WIth respect to the planets, the sun is essentially motionless.<br /><br />But the Sun orbits the center of our galaxy. So it is very definitely moving. <br /><br />The galaxy is moving away from most galaxies but towards a few. Everything is moving. In fact, relative to something in the univerrse everything is moving in 3 directions at once.<br /><br />The core of the galaxy, with a few exceptions keeps everything "orbiting" the galactic core in a mostly flat plane.<br /><br />Sometimes, stars interact with one another that cause one to be ejected from the galaxy.<br /><br /> <div class="Discussion_UserSignature"> <em>"2012.. Year of the Dragon!! Get on the Dragon Wagon!".</em> </div>

 

[newtonian]

olivebird111 - That is an excellent question/idea.<br /><br />Indeed the popular model has our sun's origin in a stellar nursery with other stars also formed.<br /><br />To my knowledge, scientists have not determined which other stars were formed in the same stellar nursery, nor exactly where that nursery was, nor in which direction our sun has travelled away from that nursery.<br /><br />To my knowledge, our sun is not gravitationally bound to matter in that nursery nor to any other stars that originated in that nursery.<br /><br />But could we be and simply not discovered it? Or could I simply be ignorant of recent discoveries concerning this question?<br /><br />If we really are not gravitationally bound to any of the above - why not?????<br /><br />BTW - there are stars that have and will in the future have close encounters with our sun. <br /><br />Not close enough to become a binary system, certainly not close enough to collide, but close enough to influence orbits in the Oort cloud.<br /><br />BTW - the Oort cloud does constitute a larger system.<br /><br />I have also explored the question as to whether our sun, in future billions of years, might collide with a brown dwarf.

 

[qso1]

Newtonian:<br />To my knowledge, scientists have not determined which other stars were formed in the same stellar nursery, nor exactly where that nursery was, nor in which direction our sun has travelled away from that nursery.<br /><br />Me:<br />I'm not aware of any scientific data concerning possible other stars that may have formed within the same stellar nursery as the sun (Sol) but I sometimes wonder if stars near us such as Alpha and Proxima Centauri might have formed withnin that same nursery.<br /><br />Newtonian:<br />But could we be and simply not discovered it? Or could I simply be ignorant of recent discoveries concerning this question?<br /><br />Me:<br />I'd say we havn't discovered it if we are gravitationally bound to any local objects, matter.<br /><br />Newtonian:<br />If we really are not gravitationally bound to any of the above - why not?????<br /><br />Me:<br />The sun is gravitationally bound to the Milky Way galaxy but why it may have escaped other bodies within the stellar nursery is unknown, at least to me. But theoretically I'd say some objects orbiting the galaxy do so in their own orbits while other objects orbit clustered together, kind of like planets orbiting stars. Some with satellites, some without.<br /><br />Newtonian:<br />Not close enough to become a binary system, certainly not close enough to collide, but close enough to influence orbits in the Oort cloud.<br /><br />Me:<br />Yep, Barnards star is said to be one of them.<br /><br />Newtonian:<br />BTW - the Oort cloud does constitute a larger system.<br /><br />Me:<br />The Oort cloud is part of the solar system, all of which orbits the Sun. There may be bodies within the Oort cloud that have been captured by Sol. <div class="Discussion_UserSignature"> <p><strong>My borrowed quote for the time being:</strong></p><p><em>There are three kinds of people in life. Those who make it happen, those who watch it happen...and those who do not know what happened.</em></p> </div>

 

[MeteorWayne]

I have a dim recollection that a number of stars were proposed as children of the same stellar nursery, but that was several years ago. I'm not sure I can find the reference now, but I'll try. I read so much, once it gets a few years back, it's blurry pudding. <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>

 

[kyle_baron]

I'll help ya. From The Night Sky Observers Guide Introduction p.xxxvi : The sun lies in the very midst of the Ursa Major Stream (5 stars of the Big Dipper 70 ly. away), and includes widely distributed stars as Sirius, Delta Leonis, Beta Erandi, Delta Aquarii, and Beta Serpentis. The Ursa Major stream is within a larger and older stellar stream: The Hyades in Taurus.... <div class="Discussion_UserSignature"> <p><font size="4"><strong></strong></font></p> </div>

 

[qso1]

I would imagine the sun probably is part of a larger collection of stars from a stellar nursery. I sometimes wonder what it would be like if we were withing the eagle nebula. Would we see the nebula surrounding us or is the gasses making up the nebula too diffuse to actually see when within it. <div class="Discussion_UserSignature"> <p><strong>My borrowed quote for the time being:</strong></p><p><em>There are three kinds of people in life. Those who make it happen, those who watch it happen...and those who do not know what happened.</em></p> </div>

 

[MeteorWayne]

Thanks, that is probably what I remember as is seems familiar.<br />Makes Ursa Major a bit more special when you gaze upon it. <img src="/images/icons/smile.gif" /> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>

 

[search]

Hello Oliverbird111<br /><br />IT IS A BIG STORY...<br /><br />From wiki:<br />http://en.wikipedia.org/wiki/Milky_Way#The_Sun.27s_place_in_the_Milky_Way<br /><br />"The Sun's place in the Milky Way<br /><br />The Sun (and therefore the Earth and Solar System) may be found close to the inner rim of the Orion Arm, in the Local Fluff, at a distance of 7.94±0.42 kpc from the Galactic Center.[10][11][12] The distance between the local arm and the next arm out, the Perseus Arm, is about 6,500 light-years.[13] Our Sun, and thus the solar system, is found in what scientists call the galactic habitable zone.<br />The Apex of the Sun's Way, or the solar apex, refers to the direction that the Sun travels through space in the Milky Way. The general direction of the sun's galactic motion is towards the star Vega near the constellation of Hercules, at an angle of roughly 86 degrees to the direction of the Galactic Center. The sun's orbit around the galaxy is expected to be roughly elliptical with the addition of perturbations due to the galactic spiral arms and non-uniform mass distributions.<br />It takes the solar system about 225-250 million years to complete one orbit (a galactic year),[14] and so is thought to have completed about 20-25 orbits during its lifetime or .0008 orbit since the origin of man. The orbital speed of the solar system is 217 km/s, i.e. 1 light-year in ca. 1400 years, and 1 AU in 8 days.<br />The Hayden Planetarium uses 8.0 kpc in their interactive 3D Milky Way Atlas, which just includes the Galactic Center."<br /><br />IT IS A REALLY BIG STORY...<br />"Speed through space<br /><br />In the general sense, the absolute speed of any object through space is not a meaningful question according to Einstein's Special Theory of Relativity, which declares that there is no "preferred" inertial frame of reference in space with which to compare the galaxy's motion. (Motion must alw

 

[newtonian]

MeteorWayne - Yes, and I do remember reading the same not long ago.<br /><br />But are these close stars all from the same stellar NurserY?<br /><br />Since our sun likely was formed some 5 billion years ago and since Milky Way is revolving at a rate of roughly every 225 million years, that would mean more than 20 times around.<br /><br />Have there been any computer models to guess (compare computer models of future tracks of hurricanes) at how the current spread of stars originated in a stellar Nursery some 5 billion years ago?

 

[newtonian]

SEARCH - Thank you for the research. <br /><br />From memory from other sources: our galaxy is on a sort of river in space along with thousands of other galaxies heading towards the Great Attractor.<br /><br />Some time ago Leovinus linked info. indicating possible plural Attractors with a single center of gravity. That was variant from what I had read about a single Great Attractor.