Word: marse
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Dates: during 1950-1959
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The earth, moving faster on its smaller orbit, overtakes and passes Mars every 26 months, but the distance of closest approach varies considerably because both orbits are slightly elliptical, with their long axes pointing in different directions (see diagram). The earth may overtake Mars at a point where the orbits...
For both astronomers and science fiction writers. Mars is the king of planets. Its atmosphere is dense enough to make life possible, but not so dense that it hides the surface, as does the cloudy white atmosphere of Venus. There is water on Mars - not much, but some. Thin winds...
New Tricks. Mars came fairly close in 1954. but it could be observed effectively only from the earth's Southern Hemisphere, where observatories are few. So 1954 was a kind of dress rehearsal for this year's event. Astronomers have devised new tricks and instruments. Much of their...
Even if the astronomers do not get better pictures of Mars, they will surely learn new facts about it. Such fast-improving devices as the infra-red spectrometer will tell new details about the composition of the Martian atmosphere.
Yellow Planet. As Mars drew close last week, even laymen noticed that it could hardly be called red. This time it looked definitely yellow. One reason for this, reported astronomers from Japan to Texas, was a gigantic, yellow dust cloud, presumably raised by unusual turbulence in the Martian atmosphere. It...