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Solar eclipse of March 9, 1997 ：ウィキペディア英語版

Solar eclipse of March 9, 1997

A total solar eclipse occurred on March 9, 1997. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of the Sun for a viewer on Earth. A total solar eclipse occurs when the Moon's apparent diameter is larger than the Sun's, blocking all direct sunlight, turning day into darkness. Totality occurs in a narrow path across Earth's surface, with the partial solar eclipse visible over a surrounding region thousands of kilometres wide.
== Unusual gravity variations ==
This solar eclipse is somewhat special in the sense that some unexplained gravity anomalies of about 7

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10⁻⁸ m/s² during the solar eclipse were observed. Attempts (e.g., Van Flandern–Yang hypothesis) to explain these anomalies have not been able to reach a definite conclusion.〔Q.-S. Wang, X.-S.Yang, C.-Z. Wu, H.-G. Guo, H.-C. Liu and C.-C. Hua, Precise measurement of gravity variations during a total solar eclipse, Phys. Rev. D 62, 041101(2000).〕

抄文引用元・出典: フリー百科事典『ウィキペディア（Wikipedia）』
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