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На этой странице приведены все страницы, которые ссылаются на http://www.astronomy.com/observing/observing-podcasts/2015/09/trio-of-open-clusters-in-cygnus-ngc-7139-and-ngc-7103. Показаны документы 1 - 1 из 1.
1. Stellar remains reveal Andromeda's history | Astronomy.com
... Observing . ... Star Atlas . ... galaxies . stars . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Stellar remains reveal Andromeda's history . Planetary nebulae, stars similar to the Sun which have burnt up their fuel and ejected their external layers, make it possible to study two main substructures of the Andromeda galaxy and determine their histories. ... Two double stars, spiral galaxy NGC 1792, and planetary nebula NGC 2022 . ...
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Ссылки http://www.astronomy.com/news/2015/12/stellar-remains-reveal-andromedas-history -- 69.5 Кб -- 10.04.2016
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