Milky Way Galaxy Facts

  1. Most people refer to this as either the Milky Way or Galaxy.
  2. The Milky Way is where Earth and our Solar System are located.
  3. Aristotle, in his Meteorologica, suggested that the Milky Way may be made up of distant stars.
  4. Galileo provided proof that the Milky Way did consist of stars when he used his telescope.
  5. The Milky Way contains approximately a minimum of 100 billion stars and a maximum of 400 billion.
  6. Similar to other galaxies, the Milky Way contains a bulge, disk, and halo.
  7. The bulge in the center of the Milky Way is said to contain old stars.
  8. The halo of the Milky Way is believed is said to contain dark matter and globular clusters.
  9. The disk is said to be made of young stars, dust, and gas.
  10. The Milky Way is known as a binary system.
  11. Other Dwarf Galaxies orbit the Milky Way.
  12. The Milky Way is a spiral galaxy.
  13. Looking up at the night sky, all the visible stars you see are part of the Milky Way Galaxy.
  14. The Milky Way’s center can be located in the direction of Sagittarius (Right Ascension = 19h / declination = “25″)
  15. The Milky Way’s size is about 30 kilo parsecs (100,000 light years) in diameter.
  16. The Milky Way’s thickness as we view it from earth is nearly 3,000 light years (just like a CD).
  17. The distance between the Milky Way’s center and Sun is estimated to be 25,000 to 28,000 (This estimate is still debatable)
  18. There are spiral arms (or at least they look like arms) coming out from the center of the Milky Way.
  19. In November 2010, researchers said that they discovered two large spherical bubbles of energy that are exploding to the north and south of the Milky Way’s center.
  20. It will take the Sun, along with the Solar System, more or less 220,000,000 years to make a complete rotation around the Milky Way.
  21. Scientists have said that the Milky Way is a member of galaxies named the Local Group
  22. The Andromeda Galaxy is a similar galaxy as the Milky Way.
  23. No one can really say how old the Milky Way is, guess-timates put it at about 13 billion years old.
  24. The Latin translation for Milky Way is Via Lactea.
  25. The Greek word for Galaxy is Galaxias or ????????.

55 Responses to “ Milky Way Galaxy Facts ”

  1. john

    amazing there might be an opposite world out there so incredible wish i was in space right now

  2. unknown

    love the picture

  3. poop is fuzzy

    i hate the space it is so freaky but the pic is just awsome!!!!!!!

  4. katesisco

    The globular clusters are both above and below the galaxy’s spiral arms that lie in the plane of the ecliptic. They are NOT in the plane of the ecliptic itself which is where the Halo of mass lies. It is more correct to think of the mass in the Halo not as weight but speed. Particles in a cyclotron gain ‘mass’ as they gain speed. no# 8
    Think of a top spinning. The equator of the top is where you would find the Halo of the galaxy. It is more correct to think of this as energy that is recycled into the arms of the galaxy. Think of a water fountain at a park with a jet of water shooting up and then spraying out in every direction. We back up until we are out of the range of the falling water. In a galactic center this jet of energy shoots out from the center both sides and sprays in a arch the entire galaxy wide. Because there are two jets of spray they form a dome each and meet, where they meet is the Halo. There mass is the greatest. No# 19 The globular clusters are bystanders that get showered on by this energetic spray. perhaps this energy spray helps them maintain their enviable coherence.

  5. unknowwn,baybee :D

    space ?? i need my personal space !! why does everyone want to get in it HUUH ??? well take a good hard look at ur selff MR/MRS cuzz imma comee att yaah !!! yeaah yeaah yoou heaard meee ;;) bob marley roxxx :D red red wine tatatata] elivis but i cant help fallin in <3with uuuh :) teheheheh

  6. f u and f her 2

    space is asome

  7. too tall

    did you know that scientists have discovered that in the middle of our milky way there is two big bubbles of energy.
    Scientists beleave that the bubbles are coming from a black hole coming from the middle of our Milky Way. So all this time we’ve been spining around a black hole. wow!!!!!!!!!!!!

  8. too tall

    Mabey in 10 million years from now mabey the earth will be sucked into the black hole. ya never know it could happen.

  9. santana:)


  10. fernandisha

    this really help me with my science projects i am gonna recomend this webstie to friends and family member <3 ♥ so cool :D

  11. Mystery Girl

    The picture is very beautiful(; keep it simple ppl :D

  12. partygirl


  13. BabeDall!!

    hayy,,,yall im bored af and need help!!

  14. frerf

    do not lke it

  15. Deyanatoosexy


  16. KD

    I love this website, very good. It amazing dat we be so smal, and day be so bigg

  17. deeesnuts


  18. tylerd.

    These facts are sooooooo interesting. I think I need to learn alot more about the Milky Way!

  19. omar

    you helped me on my science project

  20. Shakira

    thiss iss totalyy awesomm

  21. Shakira


  22. kerry

    if all telascopes around the world would at the same time looked at the stars. and if the stars were moving away from earth from all points around the world that would prove the milkey way is the center of the universe

    furthermore. science prooved billions of years ago stars was closer to the milkeyway. and in the above case and this one we are the center of the universe
    and the big bang. the above has yet to be tested to proove my theory.
    if i am right then we are the center of it and the milkey way is not moving
    and thats another thing. prove the milkey is not floating away ,, i noticed in
    my findings everything is moving away from us and the milkeyway.

  23. kerry

    all galixys are held together by a black hole in its center. or somthing with gravity strong as a black hole
    ever ask yourself why is everything in space circler or global shaped as default.
    the universe is global shaped which helps suport the big bang theory. being
    that such a explosion would shoot everything in all directions. and heres a shocker for you. earth is not the result of the big bang. it came after that.. to prove this.
    reaf my other post. about how this can be proven.

  24. kerry

    i have a question
    is it true that solor systems speed up as a black
    hole gets closer

  25. jessica

    hey this is cool :)

  26. jessica

    I have a prject that is about space too :)

  27. jessica

    you know I like space it is awesomm and I am going to go back to my work now ok :)

  28. sheraaz

    best info on space ever!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! :) :) :) :) :) :) :)

  29. Amber

    I’m doing a project right now anout the milky way galaxy!

  30. lauren

    i already knew about there being billions of other galaxies that hold trillions of other planets and honestly there can be a planet just like ours but different looking people, or animals that never been herd of, and will never evolve on our planet. there could be a planet with dinosaurs that never went extinct. theres TONS f other possibilitys that will probably never be explored……

  31. swag boy

    man i hope it helps me on my project for ma last six weeks grade

  32. Swagger jv

    This website is awesome but it has to have move pictures and put It on Facebook and twitter so more people would know about it

  33. Swagger jv

    This website is awesome but it has to have move pictures and put It on Facebook and twitter so more people would know about it

  34. bubbles

    this is really cool i hope i get an A on my project :)

  35. bubbles

    This is really pic i hope i get an A on my project :)

  36. bubbles

    this is a really cool pic i hope i get an A on my reasearch paper :)

  37. drivengizmo

    this is semi true we are merging with the milky way but havent yet… the ending of the myan calender is based on the relativity of the pleiades. we are going to start moving ‘down’ into the milky way and the pleiades will be in a different place from here on earth. EVER WONDER WHY THE MILKY WAY APPEARS SIDEWAYS? we are a part of sagitarius dwarf galaxy……you can learn the rest

  38. B

    Omg thxso much totally needed this, best site for info evr

  39. Lilpudden

    This is a absolutely awesome website it gave us heaps of help on our poster for science

  40. Nadine

    Thanks it really helped me with my project! ♥ :) ;) :P :D

  41. Gutrued

    Thx! This really helped me with a project! :D x

  42. Priya

    Its awesome it really helped me a lot

  43. stormy

    i feel stupid.i don’t understand any of it . it is so confusing

  44. Fadedx3

    Blahahaha. I had to do a power point about this -__-

  45. sophaq

    This is all really help full, although i wish some info would be more precise, rather then using ‘about’ and ‘more or less’
    Although help full, plz have actual numbers if possible? Love the milky way though. well done

  46. Ella

    SPACE IS THE MOST BORING THING. But this does make it sound kinda cool, so you are obviously a genius. But i find the stuff about like comets and space rocks REALLY boring. Maybe you could help meh out -wink wink-

  47. Cristina

    So cool. I like the points . It really helped with my essay too. The pic is nice too. I think space is an amazing thing. I love science. It’s sooooooooooooooo interesting. Learning about the Milky Way is nice. Again, nice pic. Really like it.

  48. mary

    cool pic!

  49. WhoviansRule

    I love Science and now I’m really interested. NASA, get a spot ready for me!

  50. kkkk

    nbnbnbnbnbnbnbnbnbnbnbnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn yyyyyeeeeeeeessssssss amazing i never knew that before thx for help on my speech

  51. wholfs are cool;]

    i <3 u so much:)i now <3 space

  52. sachin patil

    The milky way galaxy is have more magnetic power that attracting towards center core me magnetism … The Galaxy is going to be contract ( Compress ) in that only that is because of density always ” He ” component compact its self in that only …
    the outer stars are going to expand its self because no much attracted more by center core……. because of less attraction the solar system will going to be expanding but all stars and planet is under the control of center core of galaxy if it that center is damaged there all our galaxy is damaged …….. there attractive power is like a web structure …… all planet is under that web …

  53. earthlover101

    nice info

  54. earthlover101


  55. earthlover101

    in a millionyear or so the sun will destroy the earth by expanding and be fore that the milky way could combine with another galaxy that close to use and there is a black hole in the middle if the milky way. LOL AND YOLO!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!