Word: martianize
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Dates: during 1930-1939
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That there is vegetation on Mars is a fairly plausible assumption. The reddish hue of the planet used to be ascribed to foliage of that color. A more favored explanation nowadays is chemical absorption of oxygen in the soil-that is, oxidation or "rusting" of the Martian terrain. But the dark patches on the planet's surface grow heavier and more distinct in winter, change from blue-green in summer to chocolate brown in winter. These changes strongly suggest vegetation. The potent chemical compound called chlorophyll is present in all the green plants of Earth, but spectroscopic analysis...
...existence of animal life on Mars is anybody's guess. Mars is smaller, colder, drier than Earth, has a much thinner atmosphere. Adams and Dunham of Mt. Wilson have shown that the oxygen content of the Martian atmosphere must be less than 1% of the Earth's. Yet among different types of animal life on Earth there are enormous differences in the rate of oxygen intake, and it may be that animals on Mars have adapted themselves to the rare atmosphere by an ultra-slow rate of oxygen consumption. Such animals might be intelligent but they would also...
...when Caltech's 200-inch telescope gets into action (perhaps next year). The giant instrument will show Mars larger but not much clearer, on account of atmospheric distortion. The light by which earthlings see Mars is reflected sunlight-and that means light which has passed twice through the Martian atmosphere and once through the Earth...
Earl Carl Slipher of Lowell Observatory (Flagstaff, Ariz.) has spent more time looking at Mars than any other living astronomer. Some years ago he made photographs showing that there are clouds and storms in the atmosphere of Mars, mostly in the neighborhood of the Martian equator. These are thickest in the early Martian morning, quickly vanish as the sun climbs...
...this time from the Earth's southern hemisphere than from the northern, Dr. Slipher was last week posted at Harvard's observatory near Bloemfontein in South Africa. He discovered that Solis Lacus, a dark spot on Mars as big as the U. S. and located near the Martian south pole, had assumed a shape never before seen, or at least not in the last half-century. This change of shape, reasoned Old Marster Slipher, could be plausibly ascribed to the growth of fresh vegetation...