11/25/2023 0 Comments James webb telescope cartwheel galaxyHowever, the Cartwheel Galaxy’s two rings-a bright inner ring and a surrounding, colourful ring-which gives it the name ‘ring galaxy’, differentiates it from other spiral galaxies like ours. Webb’s Mid-Infrared Instrument (MIRI) shows a group of galaxies, including a large distorted ring-shaped Cartwheel galaxy.(Credits: NASA, ESA, CSA, STScI, Webb ERO Production Team) “It (MIRI) reveals regions within the Cartwheel Galaxy rich in hydrocarbons and other chemical compounds, as well as silicate dust, like much of the dust on Earth”, disclosed NASA. Even Webb’s Mid-Infrared Instrument (MIRI) data shows similarity with milky way galaxy. Milky Way galaxy has a visible diameter of between 100,000 and 200,000 light years. The Cartwheel Galaxy is around 150,000 light years across, not too discrete than our Milky Way galaxy. How different are the features of this galaxy from others spotted till now? Before the collision, the galaxy is considered to have been a normal spiral galaxy like the Milky Way. The appearance is caused because of a violent high-speed collision between a massive spiral galaxy and a smaller galaxy not visible in this image. The arms spreading out from a central core resembles the spokes of a cartwheel. This is an image of the Cartwheel Galaxy taken with the NASA/ESA (European Space Agency) Hubble Space Telescope.(ESA/Hubble & NASA) Why is it named Cartwheel?Īppearance of the galaxy is much like that of the wheel of a wagon. This ring expands to plough into surrounding gas, which triggers star formation. The outer ring has expanded for about 440 million years and is dominated by star formation and supernovas. According to the statement released by NASA, the galaxy’s bright core contains a tremendous amount of hot dust. Thus, the galaxy remained a mystery for so long. The Hubble telescope sought to examine the galaxy, but huge amounts of dust hindering its line of sight proscribed its detailed imagery. This elusive galaxy is about 500 million light years away in the Sculptor constellation of the southern sky. He termed it as “one of the most complicated structures”. In 1941, Swiss astronomer Fritz Zwicky first discovered the Cartwheel Galaxy. Why is the Cartwheel galaxy’s imagery peculiar?
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