March 2, 2024


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Blue object in the Large Magellanic Cloud. Hubble shoots open star cluster “NGC 1858” | Sorae Portal to the Universe

[▲ العنقود المفتوح “NGC 1858” الذي صوره تلسكوب هابل الفضائي (Credit: NASA، ESA and G. Gilmore (University of Cambridge)؛ Processing: Gladys Kober (NASA / Catholic University of America))]

This is in the direction of the constellation Dorado in the southern sky.Scattered constellation “NGC 1858”he is. NGC 1858 is located in the Large Magellanic Cloud (LMC), one of the companion galaxies (satellite galaxies) of the Milky Way, about 160,000 light-years from Earth.

An open star cluster is a celestial body in which tens to hundreds of stars are sparsely clustered. According to the National Aeronautics and Space Administration (NASA), NGC 1858 is a young star cluster about 10 million years old. NGC 1858 also detected protostars, which are stars that have just been born, and it is possible that star formation activity within the cluster is still active or has just stopped.

NGC 1858 is also an emission nebula in which interstellar gas ionized by ultraviolet light from a star emits light, its luster visible from the center to the lower right of the image. According to NASA, the ultraviolet light that ionizes the gas comes from relatively short-lived massive stars, indicating recent star-forming activity in NGC 1858.

photo at the beginningHubble Space TelescopeCreated based on the image obtained, and provided by NASA on December 2, 2022.


  • Image credit: NASA, ESA, and G.Gilmore (University of Cambridge); Processor: Gladys Cooper (NASA/Catholic University of America)
  • NASA – Hubble spies binary star cluster emission nebula

Text / Takehiro Matsumura

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