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Double sun sunset
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Double sun sunset no longer science fiction An international research team from University of Jena (Germany), Nagoya University, and Harvard-Smithsonian Centre (USA) has recently obtained the first direct images of the second "Sun" around a planet-hosting star, gam Cep, using the...
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APOGEE spectrograph
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New astronomy tool peers through the heart of the Milky Way A powerful new tool for probing the structure of our galaxy has been developed by astronomers associated with the Sloan Digital Sky Survey, including two Penn State astronomers. The new tool is an infrared spectrograph for the Apache Poin...
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Solar wind
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A layer deep in the solar atmosphere can be used to estimate the speed of the solar wind, a stream of electrified gas that constantly blows from the Sun. Estimating the speed of the solar wind will improve space weather fore...
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32
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Type Ia supernovae
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Astronomers Study Shape of Stellar Candles
Astronomers are reporting remarkable new findings that shed light on a decade-long debate about one kind of supernovae, the explosions that mark a star's final demise: does the star die in a slow burn or with a fast bang? From their observations...
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73
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Determining Distance
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Title: Geometrical Distance Determination using Type I X-ray Bursts
Authors: Thomas W. J. Thompson, Richard E. Rothschild, John A. Tomsick
With the excellent angular resolution of the Chandra X-ray Observatory, it is possible to geometrically determine the distance to...
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21
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775 AD Event
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Vast cosmic event leaves record in ancient trees The wooden hearts of two cedar trees hold a 1200-year-old cosmic mystery - evidence of an unexplained event that rocked our planet in the 8th century. Cosmic rays are subatomic particles that tear through space. When they reach Earth they react with t...
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14
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Extinction
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[url=http://mysite.freeserve.com/blobrana/news/explosion.html]star
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SOHO
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The world's flagship solar probe, the Solar and Heliospheric Observatory (SOHO), is celebrating ten years in space on 2nd December. Scientists are gathering at CCLRC Rutherford Appleton Laboratory on the annive...
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10
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Terrestrial Planets
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Title: The Physics of Bodily Tides in Terrestrial Planets, and the Appropriate Scales of Dynamical Evolution Authors: Michael Efroimsky, Valery lainey Any model of tides is based on a specific hypothesis of how lagging depends on the tidal-flexure frequency. For example, Gerstenkorn (1955), M...
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4
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Comet 29P/Schwassmann-Wachmann
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Outburst of comet 29P/Schwassmann-Wachmann. The comet 29P/Schwassmann-Wachmann has brightened up again reaching magnitude 11.0 V. on September 21, 2008. The brightening was observed by Juan Antonio. [url=http://...
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15
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Vector-APP coronagraph
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Breakthrough for Planet Hunters Astronomers from Leiden University in the Netherlands and the University of Arizona have successfully commissioned a new type of optic that can reveal the image of an exoplanet next to its parent star. The "vector Apodizing Phase Plate," or vector-APP...
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Large Sky Area Multi-Object Fibre Spectroscopic Telescope (LAMOST)
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A giant surrealistic tower, erratically skewed, points at the sky on top of a 960-meter hill 170 kilometres northeast of Beijing. The white structure, with a wide dome at its lower end, looks more like a missile silo. Chinese scientists have built the world's most powerful optical telescope in a res...
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6
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KODIAQ Survey
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Title: The First Data Release of the KODIAQ Survey Author: J.M. O'Meara, N. Lehner, J.C. Howk, J.X. Prochaska, A.J. Fox, M. A. Swain, C. R. Gelino, G. B. Berriman, H. Tran We present and make publicly available the first data release (DR1) of the Keck Observatory Database of Ionised Absorption towar...
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Missing supernovae
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Stars "missing in action" now counted Almost one in five exploding stars in nearby galaxies is simply not seen, astronomers have determined. For galaxies further out, that fraction doubles. This finding clears the way for these stellar beacons to be used as a good measure of how fast gal...
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z=2-7 Star-Formation Plateau
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Title: On the puzzling plateau in the specific star formation rate at z=2-7 Authors: Simone M. Weinmann, Eyal Neistein, Avishai Dekel The observational indications for a constant specific star-formation rate (sSFR) in the redshift range z=2-7 are puzzling in the context of current galaxy-form...
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