By Carl Sagan, Ann Druyan

WHAT ARE those swish viewers TO OUR SKIES? WE NOW recognize THAT they create either lifestyles AND dying AND train US approximately OUR ORIGINS.

Comet starts off with a panoramic trip via area astride a comet. Pulitzer Prize-winning astronomer Carl Sagan, writer of Cosmos and speak to, and author Ann Druyan discover the starting place, nature, and way forward for comets, and the unique myths and portents connected to them. The authors convey how comets have spurred a number of the nice discoveries within the background of technology and lift exciting questions on those terrific viewers from the interstellar dark.

Were the fates of the dinosaurs and the origins of people tied to the wanderings of a comet? Are comets the construction blocks from which worlds are formed?

Lavishly illustrated with images and especially commissioned full-color work, Comet is a captivating event, vital for an individual who has ever gazed up on the heavens and puzzled why.

"SIMPLY THE BEST."

The instances of London

"FASCINATING, EVOCATIVE, INSPIRING."

The Washington Post

"COMET HUMANIZES technological know-how. a gorgeous, attention-grabbing BOOK."

United Press International

"MASTERFUL . . . technological know-how, POETRY, AND IMAGINATION."

The Atlanta magazine & Constitution

From the alternate Paperback variation.

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T"~rsity--presS), p. 477. 1980, Ann. Rev. Astr. , l8, in press. Linsky, J. t. --R~--1978, Ap. , 220, 619. Linsky, J. L. and Haisch, B. M. 1979, Ap. ~~:_S_':':~~:=_~~)_, 229, t27. Linsky, J. , Horden, S. , and Robertson, R. M. 1 979, Ap. J. , 4 l, 47. Liu, S. Y. , 189, 359. Lucy, f" B. and White, R. 1980, prerrint. t1ewe, R. 1979, Space Sci. , 24, 101. Mullan, D. J. --~26, T51. Osterbrock, D. E. 19~Ap. 134, 347. Parker, E. N. 1958, Ap. ~28,664. Pneuman, G. J. ,~, 247. , and Schmitz, F. 1977, As t r.

F. Gray and J. L. Linsky (New York: Springer:'Verlag) 19. , and Vaiana, G. S. 1980a, preprint. , Vaiana, G. S" and Heiss, N. O. 1980b, submitted to Ap. J. Gough, D. O. 1976, Proc. IAU Colloq. No. 36, ed. R. M. Bonnet and P. Delache (Paris: Clermo~t-Ferand), p. 3. Haisch, B. , Linsky, J. , and Basri, G. S. 1980, Ap. , 235, 519. , Dupree, A. , and Raymond, J. C. 1980, Ap. J. (Letters), in press. --and MacGregor, K. B. 1980, preprint. Hearn, A. G. 1975, Astr. , 40, 355. 1977, Solar ~~-5-1, 159. 1980, Astr.

Magnetic Fields In the past decade a major revolution has occurred in our understanding of soLlr magnetic field structure. Hale's early investigations presented a picture of the Sun with a weak general magnetic field of order 1 G and strong magnetic fields only in sunspots. However, high resolution magnetographs and spectral polarimetry have since revealed that the global we'lk field is composed of small-scale (sub :Hcsec) features (the flux tubes) having kilogauss field strengths. Consequently, virtually all solar fields occur in regions of high field strengths, but the fields have a small filling factor.

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