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    formation of planets tagged posts

    Water might be older than we first thought, forming a key constituent of the first galaxies

    March 5, 2025, Categories  Astronomy/Space

    Water may have first formed 100–200 million years after the Big Bang, according to a modeling paper published in Nature Astronomy. The authors suggest that the formation of water may have occurred in the universe earlier than previously thought and may have been a key constituent of the first galaxies.

    Water is crucial for life as we know it, and its components—hydrogen and oxygen—are known to have formed in different ways. Lighter chemical elements such as hydrogen, helium and lithium were forged in the Big Bang, but heavier elements, such as oxygen, are the result of nuclear reactions within stars or supernova explosions. As such, it is unclear when water began to form in the universe.

    Researcher Daniel Whalen and colleagues utilized computer models of two supernovae—the...

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    Asteroid Vesta originates from a cosmic ‘Hit-and-Run’ Collision

    July 7, 2019, Categories  Astronomy/Space

    Asteroid Vesta. Credit: NASA/JPL-Caltech/UCAL/MPS/DLR/IDA

    The asteroid belt between Mars and Jupiter preserves the processes of planetary formation, frozen in time. Vesta, the second largest asteroid in this belt, provides an outstanding opportunity for scientists to investigate the origin and formation of planets. In particular, Vesta has kept its crust, mantle and metallic core, much like Earth. Careful mapping of Vesta by NASA’s Dawn mission showed that the crust at the south pole of Vesta is unusually thick.

    In a paper just published in Nature Geoscience, Dr. Yi-Jen Lai of the Macquarie University Planetary Research Centre and Macquarie GeoAnalytical and her colleagues propose a new evolutionary history of Vesta involving a giant impact...

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    Planet Formation Starts Before Star Reaches Maturity

    June 27, 2018, Categories  Astronomy/Space

    MC1A is a still developing star in the constellation Taurus. Red are areas with many dust particles. Green and blue are two types of carbon monoxide. The absence of green / blue carbon monoxide in the inner part indicates that dust particles in the young protoplanetary disk have grown from less than a thousandth of a millimeter to a millimeter. Credit: Jørgensen/Harsono/ESASky/ESAC [CC-BY-SA 3.0]

    MC1A is a still developing star in the constellation Taurus. Red are areas with many dust particles. Green and blue are two types of carbon monoxide. The absence of green / blue carbon monoxide in the inner part indicates that dust particles in the young protoplanetary disk have grown from less than a thousandth of a millimeter to a millimeter. Credit: Jørgensen/Harsono/ESASky/ESAC [CC-BY-SA 3.0]

    A European team of astronomers has discovered that dust particles around a star already coagulate before the star is fully grown. Dust particle growth is the first step in the formation of planets. The researchers from the Netherlands, Sweden and Denmark publish their findings in Nature Astronomy.

    In recent years, astronomers have discovered numerous planetary systems around other stars...

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    Gigantic Jupiter-type Planet reveals Insights into how Planets Evolve

    March 17, 2017, Categories  Astronomy/Space

    An image of the HD 106906 stellar debris disk, created by Erika Nesvold's simulation, showing the ring of rocky and icy planet-forming material rotating around the star. (The star is removed from the image, masked by the black circle.) The different hues represent gradients of brightness in the disk material; yellow is the brightest and blue the dimmest. Credit: Erika Nesvold/Carnegie Institution for Science

    An image of the HD 106906 stellar debris disk, created by Erika Nesvold’s simulation, showing the ring of rocky and icy planet-forming material rotating around the star. (The star is removed from the image, masked by the black circle.) The different hues represent gradients of brightness in the disk material; yellow is the brightest and blue the dimmest. Credit: Erika Nesvold/Carnegie Institution for Science

    Astrophysicists get rare peek at a baby solar system 300 light-years away. An enormous young planet ~300 light-years from Earth has given astrophysicists a rare glimpse into planetary evolution. The planet, known as HD 106906b, was discovered in 2014 by a team of scientists from the U.S., the Netherlands and Italy...

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