Jones, H. Spencer (Harold Spencer), 1890- · London E. Arnold & co. · leaf 408
an only be established by the identity of theirmotions. Thirty-nine members of the Taurus cluster areknown ; all of these are stars much brighter than the Sun, andit is therefore probable that many fainter stars belong to itwhich have not yet been identified. These last two classesare probably… … (a) Thk Pleiades.
Astronomy
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