Word: outward
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...have a speed of only 870 m.p.h. over escape velocity. The excess speed is added to the earth's orbital speed (66,600 m.p.h.) that the spaceship had before it was launched. This is enough to offset the sun's gravitational pull, allows the ship to swing outward in an ellipse. If the timing is right, it makes a rendezvous with Mars on its orbit...
This situation did not last. When the earth acquired oceans, the great tides aroused in them by the nearby moon made the earth rotate more slowly. This made the moon spiral outward. As it moved, it crashed into the lesser satellites, each of them blasting an impact pit in its surface. The bigger pits punched through the moon's crust and were filled with lava from the molten interior. The biggest satellite of all, about 100 miles in diameter, hit the present site of the lunar plain called Mare Imbrium-the right eye of the "man in the moon...
...information without landing on the moon or a planet. A picture of the back of the moon is one of the easiest prizes. Interplanetary space is by no means empty. It contains a very thin gas of unknown composition, and through it a "wind" of high-speed particles blows outward from the sun. This wind may be dangerous; it should be studied carefully before manned ships are launched deeply into space...
...eyes of most Europeans, the likely gains far outweigh the risks. Return to convertibility, said Per Jacobsson, managing director of the International Monetary Fund, "is an outward and visible sign of the comeback of Europe in world affairs." More important yet, it went a long way toward establishing the climate of economic freedom in which international trade and investment have historically flourished. And it was only by establishing such a climate that mid-20th-century Europe, shorn of its empires, could achieve long-term prosperity and political health...
...gimmick here, the Survey explains, is that the earth is not a sphere. The centrifugal force of its rotation makes it bulge outward at the equator. Since the oceans rotate with the earth, sea level follows the bulge. The Mississippi starts its journey 1,491 ft. above sea level at the latitudes of Minnesota. As it moves southward, its water feels more strongly the lifting effect of the earth's spin. Therefore, it can climb up the bulge, away from the earth's center. When it reaches the Gulf of Mexico, it meets the ocean, which has been...