Word: spacecrafts
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...giant planet, probe its intense magnetic fields and radiation belts and perhaps peek at one of the twelve Jovian moons. Then with the planet's powerful gravity acting as a slingshot, Pioneer will be hurled beyond Jupiter to begin the first voyage of a man-made spacecraft out of the solar system...
...year flight to the very edge of the solar system. On one "Grand Tour," the spaceship would have swooped by Jupiter and with a whiplike assist from that planet's powerful gravitational field, flown past the ringed Saturn and finally Pluto, the outermost planet. In another version, the spacecraft would have used a similar "gravity assist" from Jupiter to swing by Uranus and Neptune instead of Pluto. Scheduled for the late 1970s, the Grand Tours would literally have been once-in-a-lifetime opportunities. The outer planets will not be in such a favorable position again for another...
...Tour mission, in contrast, would have cost about $700 million. As an alternative, NASA is considering what it euphemistically calls a "mini-grand tour": a flyby of Jupiter and possibly Saturn using modifications of existing vehicles like Mariner 9, still in orbit around Mars. In fact, such a spacecraft is now being prepared for launch from Cape Kennedy for a two-year flight to Jupiter...
...arrived in the neighborhood of Mars last November, its TV cameras were thwarted by the billowing yellow dust clouds of a gigantic storm that obscured most of the surface of the Red Planet. Frustrated scientists and controllers at Pasadena's Jet Propulsion Laboratory began to despair that their spacecraft would ever fulfill its primary mission: mapping the surface of Mars. But by mid-January the Martian skies had cleared, and Mariner began sending back detailed pictures. Last week NASA released the latest group of Mariner photographs. Transmitted across more than 100 million miles of space and clarified with...
...radioactive elements, and underwent surface melting about 4.5 billion years ago. In contrast with delegates to previous "rock conferences," the experts assembled this year were unusually reticent about advancing new theories on the moon's evolution. Said Geochemist Paul Cast, chief lunar scientist at the Manned Spacecraft Center: "We have so much data to examine that the boys just aren't doing much speculating." Added NASA Geochemist Robin Brett: "The Apollo 15 material alone will keep us busy for about five years...