One of the most fascinating mysteries of the heavens is the comet. It goes through space, gets near enough to the earth to be seen, and then goes off and disappears in celestial distance. Often it has a hyperbolic orbit, which would make it impossible to come back. Yet it may return -- apparently contradicting the geometry of conic sections. This only goes to prove once more that it is risky to say anything is impossible. . . .
ISBN 9780586039502
Condition USED
Publisher FLAMINGO
Artist / Author E.E. "Doc" Smith
Shipping Weight 0.3000kg
Type books
Format Hardback

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