Astronomy News

Hyades Supercomputer Reveals Why Sibling Stars Look Alike

September 2, 2014

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Early Turbulent Mixing of Gas in Open Star Clusters Results in Unique Chemical Fingerprint

A newly published study details how astronomers from UC Santa Cruz used supercomputer simulations to trace the mixing of chemical elements in star-forming clouds, finding that stars formed from a single cloud bear the same unique chemical fingerprint. Early, fast, turbulent mixing of gas within giant molecular clouds—the birthplaces of stars — means all stars […]

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Hubble Views Spiral Galaxy PGC 54493

September 2, 2014

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New Hubble Image of Spiral Galaxy PGC 54493

This newly released Hubble image shows spiral galaxy PGC 54493. This new NASA/ESA Hubble Space Telescope image shows a beautiful spiral galaxy known as PGC 54493, located in the constellation of Serpens (The Serpent). This galaxy is part of a galaxy cluster that has been studied by astronomers exploring an intriguing phenomenon known as weak […]

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Global Network of Radio Telescopes Settles Controversy Over Distance to Pleiades

August 29, 2014

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Radio Telescopes Settle Controversy Over Distance to Pleiades

Using a global network of radio telescopes, astronomers have measured the distance to the Pleiades at 443 light-years – accurate to within one percent. Astronomers have used a worldwide network of radio telescopes to resolve a controversy over the distance to a famous star cluster — a controversy that posed a potential challenge to scientists’ […]

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Seismic Analysis of Young Stars Reveals Their Evolution

August 29, 2014

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Echography of Young Stars Reveals Their Evolution

A team of astronomers studying the surface vibrations in thirty-four young stars has found a clear relationship between seismic observables and evolutionary status, and in particular they are able to infer the internal stellar processes underway and the star’s corresponding evolutionary development. The evolution of a star depends crucially on its initial birth mass and […]

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Spitzer Space Telescope Views Collision Between Large Asteroids

August 29, 2014

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Spitzer Telescope Views Asteroid Smashup

Data from the Spitzer Space Telescope has revealed a huge amount of fresh dust around NGC 2547-ID8, leaving scientists to believe that two large asteroids crashed into each other, creating a huge cloud of grains the size of very fine sand, which are now slowly leaking away from the star. NASA’s Spitzer Space Telescope has […]

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Proof That White Dwarfs Can Reignite and Explode as Supernovae

August 28, 2014

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Astronomers Find Proof that Type Ia Supernova is Caused by a White Dwarf Star Reigniting and Exploding

New research shows without a doubt that white dwarf stars can reignite and explode as supernovae. Astronomers using ESA’s Integral gamma-ray observatory have demonstrated beyond doubt that dead stars known as white dwarfs can reignite and explode as supernovae. The finding came after the unique signature of gamma rays from the radioactive elements created in […]

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Astronomers Discover a Massive Galaxy in Its Core Formation Phase

August 28, 2014

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Astronomers View Massive Galaxy in Core Formation Phase

By combining observations from several telescopes, astronomers have viewed a massive galaxy in its core formation phase three billion years after the Big Bang. Astronomers have for the first time caught a glimpse of the earliest stages of massive galaxy construction. The building site, dubbed “Sparky,” is a dense galactic core blazing with the light […]

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Pebble-Size Particles May Represent a New Class of Interstellar Particles

August 27, 2014

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New GBT Observations Show Pebble-Size Particles May Jump Start Planet Formation

A team of astronomers has discovered that filaments of star-forming gas near the Orion Nebula may be brimming with pebble-size particles. If confirmed, these particles may represent a new class of interstellar particles that could help jump-start planet formation. Rocky planets like Earth start out as microscopic bits of dust tinier than a grain of […]

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Indications of Water Clouds in a Brown Dwarf 7 Light-Years from Earth

August 27, 2014

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Astronomers Detect Evidence of Water Clouds in Brown Dwarf Atmosphere 7 Light Years from Earth

A team of astronomers has discovered indications of water clouds in the coldest known brown dwarf, which is located 7.3 light-years from Earth. Astronomers have found signs of water ice clouds on a brown dwarf located just 7.3 light-years from Earth. If confirmed, the discovery is the first sighting of water clouds beyond our solar […]

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New ScienceCasts Video: Evidence for Supernovas Near Earth

August 27, 2014

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The Local Bubble and the Galactic Neighborhood

A new four minute ScienceCasts video examines evidence that our solar system is inside a bubble of hot gas created by supernova explosions. ScienceCasts: Evidence for Supernovas Near Earth. A NASA sounding rocket has confirmed that the solar system is inside an ancient supernova remnant. Life on Earth survived despite the nearby blasts. Once every […]

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X-Rays from Eta Carinae Reveal Clues about the Double Star System

August 27, 2014

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Chandra Views the Eta Carinae Star System

The Eta Carinae star system reveals new clues about its nature through the X-rays it generates, including how the winds from the stars interact. The Eta Carinae star system does not lack for superlatives. Not only does it contain one of the biggest and brightest stars in our galaxy, weighing at least 90 times the […]

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New Image Provides the Best View Yet of Merging Galaxies in Distant Universe

August 26, 2014

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New View of Merging Galaxies in the Distant Universe

Astronomers have obtained the best view yet of a collision that took place between two galaxies when the Universe was only half its current age. Using the Atacama Large Millimeter/submillimeter Array (ALMA), and many other telescopes on the ground and in space, an international team of astronomers has obtained the best view yet of a […]

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