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  2. Molecular cloud - Wikipedia

    en.wikipedia.org/wiki/Molecular_cloud

    A molecular cloud, sometimes called a stellar nursery (if star formation is occurring within), is a type of interstellar cloud, the density and size of which permit absorption nebulae, the formation of molecules (most commonly molecular hydrogen, H 2), and the formation of H II regions.

  3. Large Sagittarius Star Cloud - Wikipedia

    en.wikipedia.org/wiki/Large_Sagittarius_Star_Cloud

    Star cluster NGC 6520 and dark nebula Barnard 86 within the Large Sagittarius Star Cloud. Superimposed upon the Large Sagittarius Star Cloud is the bright open cluster NGC 6520. Close by to the west is the small dark nebula Barnard 86, a Bok globule described by Edward Emerson Barnard as “a drop of ink on the luminous sky”.

  4. Star formation - Wikipedia

    en.wikipedia.org/wiki/Star_formation

    The W51 nebula in Aquila - one of the largest star factories in the Milky Way (August 25, 2020). Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as "stellar nurseries" or "star-forming regions", collapse and form stars. [1]

  5. Taurus molecular cloud - Wikipedia

    en.wikipedia.org/wiki/Taurus_Molecular_Cloud

    The Taurus molecular cloud (TMC-1) is an interstellar molecular cloud in the constellations Taurus and Auriga. This cloud hosts a stellar nursery containing hundreds of newly formed stars. [2] The Taurus molecular cloud is only 140 pc (430 ly) away from Earth, making it possibly the nearest large star formation region.

  6. Stellar evolution - Wikipedia

    en.wikipedia.org/wiki/Stellar_evolution

    A protostar continues to grow by accretion of gas and dust from the molecular cloud, becoming a pre-main-sequence star as it reaches its final mass. Further development is determined by its mass. Mass is typically compared to the mass of the Sun: 1.0 M ☉ (2.0 × 10 30 kg) means 1 solar mass.

  7. Interstellar cloud - Wikipedia

    en.wikipedia.org/wiki/Interstellar_cloud

    An interstellar cloud is generally an accumulation of gas, plasma, and dust in our and other galaxies. But differently, an interstellar cloud is a denser-than-average region of the interstellar medium , the matter and radiation that exists in the space between the star systems in a galaxy.

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  9. Star cluster - Wikipedia

    en.wikipedia.org/wiki/Star_cluster

    In ρ Ophiuchi cloud (L1688) core region there is an embedded cluster. [6] The embedded cluster phase may last for several million years, after which gas in the cloud is depleted by star formation or dispersed through radiation pressure, stellar winds and outflows, or supernova explosions. In general less than 30% of cloud mass is converted to ...

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