Tag: Galaxies

Astronomers accidentally discover ‘dark’ primordial galaxy with no visible stars

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Astronomers have accidentally discovered a dark galaxy filled with primordial gas untouched that appears to have no visible stars.  The researchers behind the discovery say this galaxy, designated J0613+52, could be “the faintest galaxy found to date.” Interestingly, scientists using the Green Bank Telescope (GBT) discovered the “dark” galaxy through a complete error.  “The GBT was accidentally pointed to the wrong coordinates and found this object. It’s a galaxy made only out of gas — it has no visible stars,” Green Bank Observatory senior scientist Karen O’Neil said in a…

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Hubble Finds Weird Home of Farthest Fast Radio Burst

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5 min read Hubble Finds Weird Home of Farthest Fast Radio Burst A NASA Hubble Space Telescope image of the host galaxy of an exceptionally powerful fast radio burst, FRB 20220610A. Hubble’s sensitivity and sharpness reveals a compact group of multiple galaxies that may be in the process of merging. They existed when the universe was only 5 billion years old. FRB 20220610A was first detected on June 10, 2022, by the Australian Square Kilometer Array Pathfinder (ASKAP) radio telescope in Western Australia. The European Southern Observatory’s Very Large Telescope…

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Ripples in the oldest known spiral galaxy may shed light on the origins of our Milky Way

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Observations have revealed the first-ever seismic waves seen in an ancient galaxy, possibly offering new insight into the origins of our very own Milky Way.  The galaxy, known as BRI 1335-0417, is more than 12 billion years old, making it the oldest and farthest known spiral galaxy in our universe. Using the Atacama Large Millimeter/submillimeter Array (ALMA) radio telescope in Chile, researchers studied the motion of gas around the galaxy and, in turn, captured the formation of a seismic wave. Such phenomena has never been observed before in such an…

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Unexpected cosmic clumping could disprove our best understanding of the universe

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A survey of more than 25 million galaxies has found a strange contradiction in how astronomers measure the universe’s clumpiness, and it could threaten the standard model of cosmology, which describes how the universe formed and evolved. The discrepancy, found by measuring the warping of light by the powerful gravitational fields of distant galaxies, suggests that the cosmos is less packed-together than previously predicted. If the measurement is accurate, it will join the Hubble tension as yet another significant challenge to our preconceptions of how the cosmos evolved — one…

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After 2 years in space, the James Webb Space Telescope has broken cosmology. Can it be fixed?

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Something is awry in our expanding cosmos. Nearly a century ago, the astronomer Edwin Hubble discovered the balloon-like inflation of the universe and the accelerating rush of all galaxies away from each other. Following that expansion backward in time led to our current best understanding of how everything began — the Big Bang.  But over the past decade, an alarming hole has been growing in this picture: Depending on where astronomers look, the rate of the universe’s expansion (a value called the Hubble constant) varies significantly. Related: ‘It could be profound’: How astronomer Wendy…

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Meet the Infrared Telescopes That Paved the Way for NASA’s Webb

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Scientists have been studying the universe with infrared space telescopes for 40 years, including these NASA missions, from left: the Infrared Astronomical Satellite (IRAS), launched in 1983; the Spitzer Space Telescope, launched in 2003; and the James Webb Space Telescope, launched in 2021. NASA/JPL-Caltech The Webb telescope has opened a new window onto the universe, but it builds on missions going back 40 years, including Spitzer and the Infrared Astronomical Satellite. On Dec. 25, NASA will celebrate the two-year launch anniversary of the James Webb Space Telescope – the largest…

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Hubble Sights a Galaxy with ‘Forbidden’ Light

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2 min read Hubble Sights a Galaxy with ‘Forbidden’ Light This NASA Hubble Space Telescope image features a bright spiral galaxy known as MCG-01-24-014, which is located about 275 million light-years from Earth. ESA/Hubble & NASA, C. Kilpatrick This whirling image features a bright spiral galaxy known as MCG-01-24-014, which is located about 275 million light-years from Earth. In addition to being a well-defined spiral galaxy, MCG-01-24-014 has an extremely energetic core known as an active galactic nucleus (AGN) and is categorized as a Type-2 Seyfert galaxy. Seyfert galaxies, along with quasars, host one of…

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Hubble Views a Double Cluster of Glowing Galaxies

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2 min read Hubble Views a Double Cluster of Glowing Galaxies This NASA Hubble Space Telescope image of Abell 3192 holds two independent galaxy clusters. ESA/Hubble & NASA, G. Smith, H. Ebeling, D. Coe This Hubble image features a massive cluster of brightly glowing galaxies, first identified as Abell 3192. Like all galaxy clusters, this one is suffused with hot gas that emits powerful X-rays, and it is enveloped in a halo of invisible dark matter. All this unseen material – not to mention the many galaxies visible in this image –…

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Construction on NASA Mission to Map 450 Million Galaxies Is Under Way

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6 min read Construction on NASA Mission to Map 450 Million Galaxies Is Under Way Sara Susca, deputy payload manager and payload systems engineer for NASA’s SPHEREx mission, looks up at one of the spacecraft’s photon shields. These concentric cones protect the telescope from light and heat from the Sun and the Earth, which can overwhelm the telescope’s detectors. NASA/JPL-Caltech SHPEREx Photon Shield Fabrication at Applied Aerospace Structures Corp. in Stockton CA Requester: Kaitlyn Soares Photographer: Gregory M. Waigand Date: 2023-07-12 Photolab order: 107469-11.02.03 AACS Key elements are coming together…

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Hubble Tangos with a Dancer in Dorado

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2 min read Hubble Tangos with a Dancer in Dorado This NASA Hubble Space Telescope image features the spiral galaxy NGC 1566. ESA/Hubble & NASA, D. Calzetti and the LEGUS team, R. Chandar This vibrant Hubble Space Telescope image features the spiral galaxy NGC 1566, sometimes informally referred to as the ‘Spanish Dancer Galaxy’. Like the subject of another recent image, NGC 1566 is a weakly-barred or intermediate spiral galaxy. This means that it does not have a clearly present or a clearly absent bar-shaped structure at its center. The…

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