Astronomy of To-Day
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In our eReader you can find the full English version of the book. Read Astronomy of To-Day Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Astronomy of To-Day
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Gore infers that they would probablyremain unseparated even in the largest telescope which could ever beconstructed by man.
The number of known variables of the Algol type is, so far, small; notmuch indeed over thirty. In some of them the components are believed torevolve touching each other, or nearly so. An extreme example of this isfound in the remarkable star V. Puppis, an Algol variable of thesouthern hemisphere. Both its components are bright, and the period oflight variation is about one... and a half days. Dr. A. W. Roberts findsthat the bodies are revolving around each other in actual contact.
_Temporary stars_ are stars which have suddenly blazed out in regions ofthe sky where no star was previously seen, and have faded away more orless gradually.
It was the appearance of such a star, in the year 134 B. C. , whichprompted Hipparchus to make his celebrated catalogue, with the object ofleaving a record by which future observers could note celestial changes. In 1572 another star of this kind flashed out in the constellation ofCassiopeia (see Plate XIX.
What to read after Astronomy of To-Day?
You can find similar books in the "Read Also" column, or choose other free books by Dolmage Cecil Goodrich Julius - to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Gore infers that they would probablyremain unseparated even in the largest telescope which could ever beconstructed by man.
The number of known variables of the Algol type is, so far, small; notmuch indeed over thirty. In some of them the components are believed torevolve touching each other, or nearly so. An extreme example of this isfound in the remarkable star V. Puppis, an Algol variable of thesouthern hemisphere. Both its components are bright, and the period oflight variation is about one... and a half days. Dr. A. W. Roberts findsthat the bodies are revolving around each other in actual contact.
_Temporary stars_ are stars which have suddenly blazed out in regions ofthe sky where no star was previously seen, and have faded away more orless gradually.
It was the appearance of such a star, in the year 134 B. C. , whichprompted Hipparchus to make his celebrated catalogue, with the object ofleaving a record by which future observers could note celestial changes. In 1572 another star of this kind flashed out in the constellation ofCassiopeia (see Plate XIX.
What to read after Astronomy of To-Day?
You can find similar books in the "Read Also" column, or choose other free books by Dolmage Cecil Goodrich Julius - to read onlineMoreLess
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