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  2. 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.

  3. Herbig–Haro object - Wikipedia

    en.wikipedia.org/wiki/Herbig–Haro_object

    They can change visibly over timescales of a few years as they move rapidly away from their parent star into the gas clouds of interstellar space (the interstellar medium or ISM). Hubble Space Telescope observations have revealed the complex evolution of HH objects over the period of a few years, as parts of the nebula fade while others ...

  4. List of exoplanet search projects - Wikipedia

    en.wikipedia.org/wiki/List_of_exoplanet_search...

    an amateur search project The Habitable Exoplanet Hunting Project: Active 1 (candidate) [38] [39] International network of more than 30 observatories including universities and amateur astronomers. Trans-Atlantic Exoplanet Survey (TrES) Decommissioned 5 Transiting Planets and Planetesimals Small Telescope (TRAPPIST) Active 7

  5. Interstellar medium - Wikipedia

    en.wikipedia.org/wiki/Interstellar_medium

    The interstellar medium (ISM) is the matter and radiation that exists in the space between the star systems in a galaxy. This matter includes gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding intergalactic space.

  6. Milky Way - Wikipedia

    en.wikipedia.org/wiki/Milky_Way

    [f] [154] [155] Filling the space between the stars is a disk of gas and dust called the interstellar medium. This disk has at least a comparable extent in radius to the stars, [156] whereas the thickness of the gas layer ranges from hundreds of light-years for the colder gas to thousands of light-years for warmer gas. [157] [158]

  7. Smith's Cloud - Wikipedia

    en.wikipedia.org/wiki/Smith's_Cloud

    Smith's Cloud is a high-velocity cloud of hydrogen gas located in the constellation Aquila at Galactic coordinates l = 39°, b = −13°. The cloud was discovered in 1963 by Gail Bieger, née Smith, who was an astronomy student at Leiden University in the Netherlands .

  8. TOI-178 - Wikipedia

    en.wikipedia.org/wiki/TOI-178

    For an observer rotating within this frame of reference, the planets c through g form a chain of resonance that can be expressed as 2:4:6:9:12 in ratios of periods, or as 18:9:6:4:3 in ratios of orbits, which means that for every eighteen revolutions of the planet c, the planet d completes nine, the planet e six, the planet f four, and the ...

  9. 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]