Distant from the earth 200.000,000.000,000 miles is a star called Algol. It is the second brightest star in the constellation of Perseus, and it has the curious habit of varying in brightness at regular intervals. After much research we know now that Algol consists of two stars—one bright, the other dark. They are each about 1.000,000 miles in diameter and about 2,000,000 miles apart. They revolve round one another. When the dark star is between us and the bright one, the light we receive from the latter diminishes.
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Star (Christchurch), Volume LXVI, Issue 20295, 3 May 1934, Page 18
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88Untitled Star (Christchurch), Volume LXVI, Issue 20295, 3 May 1934, Page 18
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