The Moon's changeable aspect during a lunar eclipse is largely attributable to variations in the refracted unscattered sunlight absorbed by the terrestrial...
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NewsThe impact of the Kasatochi eruption on the Moon's illumination during the August 2008 lunar eclipse.
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NewsThe JWST view of the barred galaxy population in the SMACS0723 galaxy cluster
The cosmic evolution of the barred galaxy population provides key information about the secular evolution of galaxies and the settling of rotationally dominated...
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NewsThe Kepler space mission sheds a new light on variable A- and F-type stars.
The Kepler spacecraft is monitoring the brightness of more than 150,000 stars in the constellations Cygnus, Lyra, and Draco. The photometric time series with...
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NewsThe largest known molecules in space are not produced in hydrogen-poor environments.
The largest known molecules in space, fullerenes, do not occur in hydrogen-poor environments as previously thought. Fullerenes are very stable molecules and...
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NewsThe link between the star formation history and [α/Fe ].
The abundance ratios between key elements such as iron and α-process elements carry a wealth of information on the star formation history (SFH) of galaxies. So...
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NewsThe long-period binary central stars of the planetary nebulae NGC 1514 and LoTr 5
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NewsThe magnetic sensitivity of the Mg II k line to the joint action of Hanle, Zeeman and magneto-optical effects
The polarization of the Mg II k line at 279.5 nm encodes valuable information on the magnetic field of the upper solar chromosphere, where this strong resonance...
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NewsThe most distant compact groups.
We present photometric and spectroscopic observations of the members of three previously cataloged compact group (CG) candidatesat redshifts $z>0.3$. These...
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NewsThe Nature and Nurture of Bars and Disks.
The effects that interactions produce on galaxy disks and how they modify the subsequent formation of bars need to be distinguished to fully understand the...