News tagged with nearby stars

Chemical fingerprints of ancient supernovae found

A Carnegie-based search of nearby galaxies for their oldest stars has uncovered two stars in the Sculptor dwarf galaxy that were born shortly after the galaxy formed, approximately 13 billion years ago. The unusual chemical ...

dateMar 23, 2015 in Astronomy
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Guiding our search for life on other earths

A telescope will soon allow astronomers to probe the atmosphere of Earthlike exoplanets for signs of life. To prepare, Lisa Kaltenegger and her team are modeling the atmospheric fingerprints for hundreds of potential alien ...

dateFeb 17, 2015 in Astronomy
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An infrared atlas of interacting galaxies

Most galaxies, including our own Milky Way, have been influenced by an interaction with another galaxy at some time in their past. Interactions between galaxies can trigger an increase in star-formation activity as well an ...

dateFeb 02, 2015 in Astronomy
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The tell-tale signs of a galactic merger

The NASA/ESA Hubble Space Telescope has captured this striking view of spiral galaxy NGC 7714. This galaxy has drifted too close to another nearby galaxy and the dramatic interaction has twisted its spiral arms out of shape, ...

dateJan 29, 2015 in Astronomy
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New star catalog reveals unexpected 'solar salad'

(Phys.org) —An Arizona State University alumnus has devised the largest catalog ever produced for stellar compositions. Called the Hypatia Catalog, after one of the first female astronomers who lived in approximately 350 ...

dateAug 19, 2014 in Astronomy
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First light for SPHERE exoplanet imager

SPHERE—the Spectro-Polarimetric High-contrast Exoplanet REsearch instrument—has been installed on ESO's Very Large Telescope at the Paranal Observatory in Chile. This powerful facility for studying exoplanets uses multiple ...

dateJun 04, 2014 in Astronomy
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