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181. Star Older Than the Universe | Astronotes
... Stars . ... By admin August 13, 2013 Posted in: Stars . This is a Digitized Sky Survey image of HD 140283, the oldest star with a well-determined age in our galaxy. ... However astronomers are refining their models of exactly how stars work all the time.Тљ The estimated age of 16 billion years had an uncertainty of two billion years from the inaccuracy of its measured distance alone, if any of the predicted details of the star?s interior processes were off this uncertainty could be larger still. ...
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Ссылки http://www.armaghplanet.com/blog/the-star-older-than-the-universe.html -- 80.4 Кб -- 09.04.2016
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182. Lire/Voire/Ecouter | Ciel et Espace
Inscrivez-vous Г la newsletter | ... Ciel Espace, le magazine qui vous guide toujours plus loin . ... les plus belles images de l'Univers dГїcryptГїes pour vous . ... Accueil Lire/Voir/Ecouter Lire/Voire/Ecouter . ... Lire/Voir/Ecouter . ... Avec des images rГїalisГїes, pour une grande majoritГї d'entre elles, Г l'aide d'un simple appareil installГї sur un pied photo, Laurent Laveder plonge ses lecteurs dans un univers articulГї autour des spectacles cГїlestes qui s'offrent Г qui veut les voir. ...
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Ссылки http://www.cieletespace.fr/programme-media?page=9 -- 28.7 Кб -- 09.04.2016
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183. http://sn.sai.msu.ru/~sil/preprints/postbr2.pdf
... All the galaxies are divided into 4 groups depending on the environment type; every subsample contains more than 10 galaxies. ... An effect of environments is seen both for the nuclei and for the bulges: if we consider the clusters (Virgo and Ursa Ma jor) and group centers as dense environments and the field and group periphery as sparse environments, then in the dense environments the stellar populations of S0s are in average older by 45 Gyr than in the sparse ones. ...
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Ссылки http://sn.sai.msu.ru/~sil/preprints/postbr2.pdf -- 85.0 Кб -- 01.12.2004
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184. http://www.princetonastronomy.org/newsletters/10_2004sidereal.pdf
... Brian reported that the new computer was installed at the observatory. ... Rex's club highlights were: 1) mention of the Washington Crossing observatory and its public outreach programs, availability to club members if a keyholder is present and introduction of Gene Ramsey an Brian Van Liew observatory co-chairs; 2) a brief mention that new keyholder training will take place this fall and to contact Brian for details, also acknowledgement that member Larry Kane completed the ...
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Ссылки http://www.princetonastronomy.org/newsletters/10_2004sidereal.pdf -- 550.4 Кб -- 05.10.2004
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