Word: pleiades
(lookup in dictionary)
(lookup stats)
Dates: during 1930-1939
Sort By: most recent first
(reverse)
That the seventh Pleiad is indeed a variable star was reported last week by Harvard Observatory. The cluster is draped in a veil of diffuse nebulosity which may vary the brightness of certain stars by interposing streamers of varying thicknesses. Observations by Dr. William Alexander Calder disclosed that in a year the seventh Pleiad, now called Pleïone, had diminished by one-sixth of a magnitude in brightness. It cannot have been decreasing for very long at this rate, otherwise it would have been the brightest star in the sky less than a half century ago. But the fact...
| 1 |