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  2. Orion Arm - Wikipedia

    en.wikipedia.org/wiki/Orion_Arm

    The arm is named after the Orion Constellation, one of the most prominent constellations of the Northern Hemisphere in winter (or the Southern Hemisphere in summer).Some of the brightest stars in the sky as well as other well-known celestial objects of the constellation (e.g. Betelgeuse, Rigel, the three stars of Orion's Belt, and the Orion Nebula) are found within it, as shown on Orion Arm's ...

  3. Milky Way - Wikipedia

    en.wikipedia.org/wiki/Milky_Way

    The Milky Way [c] is the galaxy that includes the Solar System, with the name describing the galaxy's appearance from Earth: a hazy band of light seen in the night sky formed from stars in other arms of the galaxy, which are so far away that they cannot be individually distinguished by the naked eye.

  4. Scutum–Centaurus Arm - Wikipedia

    en.wikipedia.org/wiki/Scutum–Centaurus_Arm

    The Scutum–Centaurus Arm, also known as Scutum-Crux arm, is a long, diffuse curving streamer of stars, gas and dust that spirals outward from the proximate end of the Milky Way's central bar. The Milky Way has been posited since the 1950s to have four spiral arms ; numerous studies contest or nuance this number. [ 1 ]

  5. Carina–Sagittarius Arm - Wikipedia

    en.wikipedia.org/wiki/Carina–Sagittarius_Arm

    Observed structure of the Milky Way's spiral arms. The Carina–Sagittarius Arm (also known as the Sagittarius Arm or Sagittarius–Carina Arm, labeled -I [clarification needed]) is generally thought to be a minor spiral arm of the Milky Way galaxy. [1] Each spiral arm is a long, diffuse curving streamer of stars that radiates from the Galactic ...

  6. Glossary of astronomy - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_astronomy

    The Milky Way Galaxy has a diameter of 100,000–200,000 light-years and is estimated to contain 100–400 billion stars and at least that number of planets. The Solar System is located on the inner edge of one of the Milky Way's spiral arms, about 27,000 light-years from the Galactic Center, which the Sun orbits with a period of 240 million ...

  7. Earliest building blocks of the Milky Way discovered near its ...

    www.aol.com/galactic-archaeology-reveals-two...

    Astronomers using the Gaia space telescope have located two ancient streams of stars that helped the Milky Way galaxy grow and evolve more than 12 billion years ago.

  8. Webb telescope spots the most distant Milky Way-like galaxy yet

    www.aol.com/webb-telescope-spots-most-distant...

    Astronomers used the James Webb Space Telescope to spot a Milky Way-like galaxy that formed soon after the big bang created the universe.

  9. Galactic Center - Wikipedia

    en.wikipedia.org/wiki/Galactic_Center

    The Galactic Center is the barycenter of the Milky Way and a corresponding point on the rotational axis of the galaxy. [ 1 ] [ 2 ] Its central massive object is a supermassive black hole of about 4 million solar masses , which is called Sagittarius A* , [ 3 ] [ 4 ] [ 5 ] a compact radio source which is almost exactly at the galactic rotational ...