Nature, Volume 427Sir Norman Lockyer Macmillan Journals Limited, 2004 |
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Página 109
... star had lost much of its hydrogen before the explosion . The discovery of a companion to this star suggests where that gas went ... Figure 1 The beautiful spiral structure of the galaxy M81 , one of the brightest galaxies in the sky ...
... star had lost much of its hydrogen before the explosion . The discovery of a companion to this star suggests where that gas went ... Figure 1 The beautiful spiral structure of the galaxy M81 , one of the brightest galaxies in the sky ...
Página 129
... star that underwent a collapse of its core to produce supernova ( SN ) 1993 ] was subsequently identified as a non - vari- able red supergiant star in images of the galaxy M81 taken before explosion . It showed an excess in ultraviolet ...
... star that underwent a collapse of its core to produce supernova ( SN ) 1993 ] was subsequently identified as a non - vari- able red supergiant star in images of the galaxy M81 taken before explosion . It showed an excess in ultraviolet ...
Página 299
... star cluster , also known as the Seven Sisters , is more than 300 light years from Earth . Exactly how far away the cluster is , however , is controversial . A measurement by the Hipparcos satellite conflicts with an estimate based on ...
... star cluster , also known as the Seven Sisters , is more than 300 light years from Earth . Exactly how far away the cluster is , however , is controversial . A measurement by the Hipparcos satellite conflicts with an estimate based on ...
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