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    Hubble tagged posts

    Hubble Views the Dawn of a Sun-like Star

    May 19, 2024, Categories  Astronomy/Space

    Large image at upper right: Three bright stars with diffraction spikes shine near the center-right of the image, illuminating nearby clouds that glow in pale blue. The clouds darken at the edges of the image, and are dotted with smaller stars, some also with diffraction spikes. Small inset image in the lower-left corner: A colorful nebula or gas cloud. A white square outlines the area of the nebula that Hubble image captures.

    Looking like a glittering cosmic geode, a trio of dazzling stars blaze from the hollowed-out cavity of a reflection nebula in this new image from NASA’s Hubble Space Telescope. The triple-star system is made up of the variable star HP Tau, HP Tau G2, and HP Tau G3. HP Tau is known as a T Tauri star, a type of young variable star that hasn’t begun nuclear fusion yet but is beginning to evolve into a hydrogen-fueled star similar to our Sun. T Tauri stars tend to be younger than 10 million years old ― in comparison, our Sun is around 4.6 billion years old ― and are often found still swaddled in the clouds of dust and gas from which they formed.

    As with all variable stars, HP Tau’s brightness changes over time.

    T Tauri stars are known to have both periodic and random fluctuation...

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    Hubble Sights a Galaxy with ‘Forbidden’ Light

    December 25, 2023, Categories  Astronomy/Space

    A spiral galaxy. It appears to be almost circular and seen face-on, with two prominent spiral arms winding out from a glowing core. It is centered in the frame as if a portrait. Most of the background is black, with only tiny, distant galaxies, but there are two large bright stars in the foreground, one blue and one red, directly above the galaxy.
    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 the most common subclasses of AGN...

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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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    Astronomers watched a Massive Star Disappear. JWST might have some answers

    October 9, 2023, Categories  Astronomy/Space

    Illustration of how a failed supernova can become a black hole. Credit: NASA/ESA/P. Jeffries (STScI)

    In 2009 a giant star 25 times more massive than the sun simply vanished. OK, it wasn’t quite that simple. It underwent a period of brightening, increasing in luminosity to a million suns, just as if it was ready to explode into a supernova. But then it faded rather than exploding. And when astronomers tried to see the star using the Large Binocular Telescope (LBT), Hubble and the Spitzer space telescope, they couldn’t see anything.

    The star, known as N6946-BH1, is now considered a failed supernova. The BH1 in its name is due to the fact that astronomers think the star collapsed to become a black hole rather than triggering a supernova. But that has been conjecture...

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