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    Category Astronomy/Space

    Second Radio Relic discovered in the Galaxy Cluster Abell 2108

    December 21, 2023, Categories  Astronomy/Space

    Second radio relic discovered in the galaxy cluster Abell 2108
    Color composite image of Abell 2108 showing Pan-STARRS ‘r’ band optical image in green, XMM-Newton X-ray in blue, and uGMRT point source removed radio image in red. Credit: arXiv (2023). DOI: 10.48550/arxiv.2312.04170

    Astronomers from India and Taiwan have used the upgraded Giant Metrewave Radio Telescope (uGMRT) to perform radio observations of a galaxy cluster known as Abell 2108. As a result, they detected a second radio relic, which is much larger and differs in morphology from the previously identified relic in this cluster. The finding was reported in a paper published Dec. 7 on the pre-print server arXiv.

    Radio relics are diffuse, elongated radio sources of synchrotron origin...

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    Webb Rings in Holidays with Ringed Planet Uranus

    December 19, 2023, Categories  Astronomy/Space

    The planet Uranus on a black background. The planet appears blue with a large, white patch taking up the right half. The patch is whitest at the center, then fades into blue at it expands from right to left. A thin outline of Uranus is also white. Around the planet is a system of nested rings. The outermost ring is the brightest while the innermost ring is the faintest. Unlike Saturn’s horizontal rings, the rings of Uranus are vertical and so they appear to surround the planet in an oval shape. There are 9 blueish white dots scattered around the rings.
    This image of Uranus from NIRCam (Near-Infrared Camera) on NASA’s James Webb Space Telescope exquisitely captures Uranus’s seasonal north polar cap and dim inner and outer rings. This Webb image also shows 9 of the planet’s 27 moons – clockwise starting at 2 o’clock, they are: Rosalind, Puck, Belinda, Desdemona, Cressida, Bianca, Portia, Juliet, and Perdita.
    NASA, ESA, CSA, STScI

    The James Webb Space Telescope recently trained its sights on unusual and enigmatic Uranus, an ice giant that spins on its side. Webb captured this dynamic world with rings, moons, storms, and other atmospheric features—including a seasonal polar cap. The image expands upon a two-color version released earlier this year, adding additional wavelength coverage for a more detailed look.

    With its exq...

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    Discovery of Two Planetary Systems around Sun-like Stars

    December 18, 2023, Categories  Astronomy/Space

    Discovery of two planetary systems around sun-like stars
    Figure 1: The small panel on the top left shows an illustration of NASA’s TESS space telescope, responsible for the first identification of the exoplanets TOI-2141b and TOI-1736b. The background image is a photo of the OHP observatory with the dome of the 1.93 m telescope, where the SOPHIE instrument is installed, responsible for the detection and characterization of the exoplanets TOI-2141b, TOI-1736b, and TOI-1736c. Credit: Eder Martioli.

    A study published today (Dec. 15) in the journal Astronomy & Astrophysics reveals the discovery of two new planetary systems orbiting stars similar to our sun, also known as solar analogs.

    The study was led by Dr...

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    Unexpected Chemistry reveals Cosmic Star Factories´ Secrets

    December 17, 2023, Categories  Astronomy/Space, Chemistry/Nanotechnology

    Galaxy illustration with molecules
    Light from many different molecules reveals the secrets of distant star factories. This illustration shows the many molecules found in the quasar APM 08279+5255, together with a Hubble telescope image of a similar galaxy in the nearby universe, IC 5063, which also has an active supermassive black hole at its centre. Background image credits: NASA, ESA & W. P. Maksym (CfA); Jmol (molecules); R. Cumming (montage)Photographer: NASA, ESA & W. P. Maksym (CfA); Jmol (molecules); R. Cumming (montage)

    Two galaxies in the early universe, which contain extremely productive star factories, have been studied by a team of scientists led by Chalmers University of Technology in Sweden...

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