Word: sagan
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...Harvard College Observatory and Smithsonian Astrophysical Observatory will hold an open house at 8 p.m. next Tuesday. Professor Carl E. Sagan's talk, "Other Planets, Other Suns," will be followed by films. Tickets, free, at 4 Matthews Hall...
...traditional view, the dark areas of Mars are considered lowlands, with bright sectors a mere mile or so higher. But Carl E. Sagan, assistant professor of Astronomy, and James B. Pollack of the Smithsonian Astrophysical Observatory, have reversed the roles of dark and light areas. And the highland, they say, are far more than a mile above "sea" level...
...From this far away," Pollack mused, "it's easy to be ingenious." But there is no real basis for believing the darkness on Mars is vegetation. Sagan and Pollack suggest instead that in the spring, some dust is blown off the continents, sharpening the contrast between the dark high-lands and the surrounding bright deserts...
...Sagan and Pollack say the dark high-lands have escaped optical detection because their long, gentle slopes and relatively level tops preclude any shadows or reflection of sunlight...
...Sagan, assistant professor of Astronomy, said that an occasional visit from a far-off world is conceivable, but not the three or four a day that have been claimed. "It is as if all the anthropologists in the United States converged on the Andaman Islands at the same time because (the natives) just discovered the fish...