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  2. Orion Arm - Wikipedia

    en.wikipedia.org/wiki/Orion_Arm

    Maps A rough artist's depiction of the Orion Arm within the Milky Way, with features marked. Molecular clouds around the Sun inside the Orion-Cygnus Arm Interactive maps Orion and neighboring arms (clickable map) The nearest nebulae and star clusters (clickable map) See also

  3. Milky Way - Wikipedia

    en.wikipedia.org/wiki/Milky_Way

    Satellite observations. Map of stars cataloged by the Gaia release in 2021, displayed as density mesh in the diagram. The ESA spacecraft Gaia provides distance estimates by determining the parallax of a billion stars and is mapping the Milky Way with four planned releases of maps in 2016, 2018, 2021 and 2024.

  4. Gaia Sky - Wikipedia

    en.wikipedia.org/wiki/Gaia_Sky

    Gaia Sky is an open-source astronomy visualisation desktop and VR program with versions for Windows, Linux and macOS. It is created and developed by Toni Sagristà Sellés in the framework of ESA 's Gaia mission to create a billion-star multi-dimensional map of our Milky Way Galaxy, in the Gaia group of the Astronomisches Rechen-Institut (ZAH ...

  5. Local Interstellar Cloud - Wikipedia

    en.wikipedia.org/wiki/Local_Interstellar_Cloud

    Map showing the Sun located near the edge of the Local Interstellar Cloud and Alpha Centauri about 4 light-years away in the neighboring G-Cloud complex. The Local Interstellar Cloud (LIC), also known as the Local Fluff, is an interstellar cloud roughly 30 light-years (9.2 pc) across, through which the Solar System is moving.

  6. Satellite galaxies of the Milky Way - Wikipedia

    en.wikipedia.org/wiki/Satellite_galaxies_of_the...

    Characteristics. Satellite galaxies that orbit from 1,000 ly (310 pc) of the edge of the disc of the Milky Way Galaxy to the edge of the dark matter halo of the Milky Way at 980,000 ly (300 kpc) from the center of the galaxy, [a] are generally depleted in hydrogen gas compared to those that orbit more distantly.

  7. Galactic Center - Wikipedia

    en.wikipedia.org/wiki/Galactic_Center

    Galactic Center. The Galactic Center, as seen by one of the 2MASS infrared telescopes, is located in the bright upper left portion of the image. Marked location of the Galactic Center. The Galactic Center is the barycenter of the Milky Way and a corresponding point on the rotational axis of the galaxy.

  8. Bortle scale - Wikipedia

    en.wikipedia.org/wiki/Bortle_scale

    In this 10-second exposure photo, facing south toward Sagittarius, light pollution obscures the stars and faintly visible Milky Way in the suburban night sky over Southern California. 4673 Bortle; Amateur astronomy; Dark-sky movement; The End of Night; International Dark-Sky Association (IDA) Light pollution; Night sky; Sky brightness; Sky ...

  9. Perseus Arm - Wikipedia

    en.wikipedia.org/wiki/Perseus_Arm

    The Milky Way is a barred spiral galaxy with two major arms and a number of minor arms or spurs. The Perseus Spiral Arm, with a radius of approximately 10.7 kiloparsecs, is located between the minor Cygnus and Carina–Sagittarius Arms. It is named after the Perseus constellation in the direction of which it is seen from Earth.

  10. Local Bubble - Wikipedia

    en.wikipedia.org/wiki/Local_Bubble

    The Local Bubble, or Local Cavity, is a relative cavity in the interstellar medium (ISM) of the Orion Arm in the Milky Way. It contains the closest of celestial neighbours and among others, the Local Interstellar Cloud (which contains the Solar System ), the neighbouring G-Cloud , the Ursa Major moving group ( the closest stellar moving group ...

  11. Andromeda–Milky Way collision - Wikipedia

    en.wikipedia.org/wiki/Andromeda–Milky_Way...

    Andromeda–Milky Way collision. A NASA conception of the collision using computer-generated imagery. The Andromeda–Milky Way collision is a galactic collision predicted to occur in about 4.5 billion years between the two largest galaxies in the Local Group —the Milky Way (which contains the Solar System and Earth) and the Andromeda Galaxy.