xpfloyd wrote in post #17515762
I was just relaying what I read on google
I didnt think the stars we saw were all milky way so googled it. Obviously the answers I read were wrong
EDIT - In fact pretty much every single website ive checked says what I said above. But im in no position to argue as I dont have the knowledge myself.
EDIT 2 - We are talking about individual stars that can be seen with the naked eye
No Eddie, I was only referring to Archer1960s statement and non of yours.
SteveInNZ wrote in post #17515801
Eddie, It's an argument of semantics but your initial statement is correct. Every star that we see as a star with the naked eye is within the Milky Way.
We can't resolve individual stars in the Magellanic clouds or Andromeda without a telescope. We can barely see stars past our own arm in the Milky Way.
We can see things outside our Milky Way (globular clusters, Andromeda galaxy, etc) but they aren't individual stars.
Respectfully, but again absolutely WRONG! (Reference your bolded statement above).
Most galaxies, at best, are looking like a faint star to naked eye and not all that stars we see are part of Milky way. Many stars, (only several times, bigger than our own sun), are much much brighter than major galaxies, due to being much much closer to us. In fact in a lot of nights or certain hours of night, we may not see Milky way at all, due to being below the horizon plane, for the location of the certain observes of that night, from earth. Sky is still full of so called "stars" for the same observer. But lets get clear on definition of the STAR. Star is a large heavenly body that is made up of Hydrogen and due to its enormous mass and size, the gravity in its center is so great that the pressure itself, ignites the fusion reaction. That is in midget form, what we on earth, call Hydrogen bomb. Or in more scientific terms it is combination of two atoms of Hydrogen to give a single molecule of Helium with humongous amount of energy released. This happens only in "Core" of sun/ central portion of the star, where the gravity is highest. Now this released energy, including light or photons will have to find their way out of the core and to the surface. Funny enough, this process takes several million years!!!!!! Once the photons get to surface, say in our own sun, it only takes about next 8 minutes for the photon to reach to earth and for instance contribute to excite a pixel on your camera sensor, thus form an image for your. So please respect every photos that come to you only in ~8 sec that are actually several million years old!! This (Star) is different from plants that are large masses of larger atoms (Mostly) and have no light of their own as they do not have enough hydrogen (Earth) or enough mass (Jupiter) to ignite that fusion reaction and start to shine. But like every plant in solar system, they can reflect the light of nearby star (In case of solar system, sun) and can be seen from outer space, far far. Plants in terms can have large, but smaller than themselves, orbiting heavenly bodies called moons (In case of Earth, one and for Jupiter, about 64). Now that we are clear about Star/sun, plant and moon, lets see what is a galaxy. That is a system of humongous number star with their associated plants/systems, similar to our tiny solar system. As mentioned above, usually a galaxy is formed of 100s to 1000s of billions of star/suns. Funny enough, neighboring galaxies can collide and join to form a single, larger galaxy, in due course of time. For eg it was thought till recent years that one day our Milky way and its neighbor galaxy, Andromeda will collide to form Milkomedia or AndroWay!! But it is now believe at least this is not going to happen and our earth has better reason to annihilate than being displaced by merging galaxies. In general there are only 3 types of galaxies. This classification is merely base on morphology of galaxy as Edwin Powell Hubble described them initially (And he missed a few other forms). The larger ones or ellipticals (If you could go around them in outer space, they would look spherical or elliptical from every angel) that are mostly result of interrelation of many other galaxies and therefor are large and older, with few to form new stars. Second type is spiral galaxy that includes S or Muliples of Ss (More internal rotations) that are plate like/Flat, eg being our own Milky way Andromeda, M51(Whirlpool galaxy),, when looked enface from top (In fact M51 was the first discovered Spiral galaxy), M82(Cigar galaxy) , same spiral but looked from the very side end so appreciating its flatness) etc. The only reason we see milky way as a white cloud band of stars, across the sky, at night is the fact that we are part of it and are looking into it like a giant disk or plate. And lastly Bizarre galaxies that surely have no well formed shape. Don't forget, no mater what is the shape of each galaxy, it is made of billions of stars. And if you thought our near by stars, beside the Sun (That actually is one of the smaller ones), like those you see as very bright light at night with the naked eyes, say: Sirius, Canopus, Arcturus, Alpha Centauri A, Vega, Rigel, Procyon , Betelgeuse, Altair, Spica, Pollux, Deneb etc are so bright only because the are located very close to us.
Even if you look at the darkest part of our galaxy, as it could be seen by orbiting eyes and not from earth itself, that Darkest black section of our galaxy is formed by thousands of galaxies and the only reason we can not see them, is because they are so far from us with no chance photons thus travelled could be picked up by ordinary means. This was proven when somebody who has a few extra IQ than IQ of we POTN reads (combined), thought; "How about taking a long image of darkest part of our galaxy"! You know Hubble telescope though is made through our tax money (USA hard working, hard earing residents), belongs to entire nations of the world and not USA alone and if you are an established person/organization, NASA gives you a limited time to ask for imaging of any particular section you want. To make long story short, this guy used that power and took an image, if I am not wrong, staking of 2 weeks continues photon acquisition from the darkest part of our galaxy, and the result is the famous Image below that except a single bright dot, every other spot you see, small or large, are galaxies, again each made up of 100 billions of stars. And PLEASE don't forget, this image is taken from the darkest part of our galaxy that you will see nothing but jet black darkness unless if you can combine the light of more than 10 days, then looked via giant eye of Hubble telescope, from outer space where there is no atmospheric distortion.
So called darkest part of the sky, as best stated: "The most important picture to mankind. This is the Hubble Ultra-Deep Field. For approximately 1 million seconds, the Hubble Telescope stared and recorded a seemingly blank patch of space. When it was finished, this final product was revealed. This is the deepest man has ever seen into the universe."
, filled to the brim with galaxies and it is estimated that there are 1500 galaxies of various kind right in this darkest patch of sky...
So next time you thought all those tiny dots in sky are stars of Milky way, One single Galaxy
, think again and in fact in the darkest part of our galaxy where you cant see anything but darkness, there might be more that 1500 galaxies....
And one more AGAIN! again as we are going to know it better (Or are we?), and as we are trying to understand the String Theory etc, we are coming to understand that we are only living in the so called "Universe" what is formed directly after Big Bang. And that is all that we can see directly or through its indirect evidences. But seems there are more than One Universe or what is said Multiverses..... Now go figure out how many galaxies are up or rather out there.
I hope I have not killed too much of your time and my point is clear (Or more blur) and I knew Steve you already knew this. Only wanted to make it more clear.