...The little cruiser rose slowly under the lift of the fans; then heopened the throttle and swept out in a parabolic curve that ended in avertical line...
Various 「Astounding Stories, May, 1931」
...The comets thus follow a very elongated orbit, either elliptic, turninground the Sun, or parabolic, dashing out into space...
Camille Flammarion Frances A. Welby 「Astronomy for Amateurs」
...Had our atmosphere notentangled them, many, circuiting the sun in a parabolic or hyperboliccurve, would have escaped for ever from our system...
E. Walter Maunder 「The Astronomy of the Bible」
... Other comets, including most of the ``great'' ones, appear to travel in parabolic or, in a few cases, hyperbolic orbits, which, not being closed curves, never bring them back again...
Garrett Serviss 「Curiosities of the Sky」
...A comet of thiskind moves in a parabolic path, sweeps once around the sun, and thenceretreats into the space whence it came...
Robert Stawell Ball 「The Story of the Heavens」
...The slowness with which these bodies move when farfrom the sun is strikingly illustrated by an equation ofcelestial mechanics which for parabolic orbits takes theplace of Kepler's Third Law—viz...
George C. Comstock 「A Text-Book of Astronomy」
...Inreflectors this is effected by giving a parabolic form tothe concave surface of the mirror...
Garrett Serviss 「Pleasures of the telescope」
...It is possible,from the shape of its orbit, that it has a periodic time of ninethousand years, or that it may have a parabolic orbit, and neverreturn...
Henry Warren 「Recreations in Astronomy」
...Cometswith parabolic and hyperbolic orbits may be regarded as stray objectswhich visit our system once, and depart never to return again...
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」
...'A comet coursing along its parabolic orbit may come full tilt againstour earth...
Richard A. Proctor 「Myths and Marvels of Astronomy」
...There is a necessary distinction between parabolic and elliptic motion...
Robert Stawell Ball 「The Story of the Heavens」
...If the earth's velocity could beincreased 41 per cent, from 19 up to 27 miles per second, itwould have parabolic velocity, and would quit the sun'scompany...
George C. Comstock 「A Text-Book of Astronomy」
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