...(c) Again, no one knows spacial or planetary conditions... 
Various 「Astounding Stories, July, 1931」
...Each bore embroidered on his chest the planetary insignia of Ku Sui in yellow, and each was armed with two ray-guns...
Anthony Gilmore 「The Affair of the Brains」
...This Balta'd like to be elected planetary president,see—to succeed Wilcox, who has bigger plans...
Roman Frederick Starzl 「The Martian Cabal」
...He had witnessed the devastationof a world, the ruin of a memberof his own planetary systemby an invader from outer space...
Donald Wandrei 「Raiders of the Universes」
...But he knew from previous calculations that this mighteasily be due to planetary perturbations...
George Forbes 「History of Astronomy」
...It is impossible to give any idea of the interest with which the firstadditions since prehistoric times to the planetary system were received...
George Forbes 「History of Astronomy」
...The extreme importance of this discovery is shown in the effect that it has had upon hitherto prevailing views of solar and planetary evolution...
Garrett Serviss 「Curiosities of the Sky」
...Olbers would seem to have been led to the invention of his hypothesis of a planetary explosion by the faith which astronomers at that time had in Bode's Law...
Garrett Serviss 「Curiosities of the Sky」
...The moon comes last in planetary sequence, as nearest to the earth...
Richard A. Proctor 「Myths and Marvels of Astronomy」
...And besides the nobleness andpleasure of the studies, may we not be so bold as to say that theyare no small help to the advancement of wisdom andmorality?—, Conjectures concerning the Planetary Worlds...
Richard A. Proctor 「Myths and Marvels of Astronomy」
...Of other planetary systems than our own, we actually knowof none, but we assume that there are such, and as numerous as there aresuns in the starry depths...
E. Walter Maunder 「Are the Planets Inhabited?」
...The above quotation is an instance of Kepler’s wild and imaginativegenius, which ultimately led him to make those sublime discoveriesassociated with planetary motion which are known as ‘Kepler’s Laws...
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」
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