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    star formation tagged posts

    Webb explores effect of strong magnetic fields on star formation

    April 4, 2025, Categories  Astronomy/Space

    The MeerKAT radio telescope shows the plane of the Milky Way galaxy, with a graphic pullout highlighting a much smaller region on the right, captured by the James Webb Space Telescope’s near-infrared light observations. The MeerKAT image is colored in blue, cyan, and yellow, with a very bright white-yellow center that indicates the location of the Milky Way’s supermassive black hole. Painterly bubbles of various sizes, clouds, and vertical brushstroke-like streaks make up the radio image. The Webb inset shows stars and gas clouds in red, with an arching cloud of bright cyan that contains many straight, needle-like features that appear more crystalline than cloudy.
    An image of the Milky Way captured by the MeerKAT (formerly the Karoo Array Telescope) radio telescope array puts the James Webb Space Telescope’s image of the Sagittarius C region in context. Like a super-long exposure photograph, MeerKAT shows the bubble-like remnants of supernovas that exploded over millennia, capturing the dynamic nature of the Milky Way’s chaotic core. At the center of the MeerKAT image the region surrounding the Milky Way’s supermassive black hole blazes bright. Huge vertical filamentary structures echo those captured on a smaller scale by Webb in Sagittarius C’s blue-green hydrogen cloud.
    NASA, ESA, CSA, STScI, SARAO, Samuel Crowe (UVA), John Bally (CU), Ruben Fedriani (IAA-CSIC), Ian Heywood (Oxford)

    Follow-up research on a 2023 image of the Sagittarius ...

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    Pillars of Creation star in New Visualization from NASA’s Hubble and Webb Telescopes

    June 28, 2024, Categories  Astronomy/Space

    A mosaic of visible-light (Hubble) and infrared-light (Webb) views of the same frame from the Pillars of Creation visualization. The visualization sequence fades back and forth between these two models as the camera flies past and amongst the pillars. These contrasting views illustrate how observations from the two telescopes complement each other.
    Greg Bacon, Ralf Crawford, Joseph DePasquale, Leah Hustak, Christian Nieves, Joseph Olmsted, Alyssa Pagan, and Frank Summers (STScI), NASA’s Universe of Learning

    Made famous in 1995 by NASA’s Hubble Space Telescope, the Pillars of Creation in the heart of the Eagle Nebula have captured imaginations worldwide with their arresting, ethereal beauty.

    Now, NASA has released a new 3D visualization of these towering celestial structures using dat...

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    Space Oddity: Uncovering the Origin of the Universe’s Rare Radio Circles

    January 9, 2024, Categories  Astronomy/Space

    Faint blue circles of light against a starry space background.
    Odd radio circles, like ORC 1 pictured above, are large enough to contain galaxies in their centers and reach hundreds of thousands of light years across. (cr: Jayanne English / University of Manitoba)

    Outflowing galactic winds from exploding stars may explain the enormous rings. Astronomers believe they may have found the origin of the universe’s giant odd radio circles: they are shells formed by outflowing galactic winds, possibly from massive exploding stars known as supernovae.

    t’s not every day astronomers say, “What is that?” After all, most observed astronomical phenomena are known: stars, planets, black holes and galaxies...

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    Astronomers find Cosmic Rays driving Galaxy’s Winds

    October 26, 2022, Categories  Astronomy/Space

    Credit: Institute for Research in Fundamental Sciences- IPM & European Southern Observatory (ESO)

    Astronomers using the National Science Foundation’s Karl G. Jansky Very Large Array (VLA) have discovered an important new clue about how galaxies put the brakes on vigorous episodes of star formation. Their new study of the neighboring galaxy M33 indicates that fast-moving cosmicray electrons can drive winds that blow away the gas needed to form new stars.

    Such winds are responsible for slowing the rate of star formation as galaxies evolve over time. However, shock waves from supernova explosions and energetic, black hole-powered jets of material coming from galactic cores have been considered the primary drivers of those winds...

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