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... as the vast Pacific Ocean, where there are few people and ships for thousands of miles. Moreover, security measures can be very effective, as the plane’s actual destination for launch ... up to the upper part of the stratosphere (about 6 to 32-miles up) or somewhere above 20-miles or 100,000-feet whereupon they separate and the nuclear engine then fires ... generation engine, firing somewhere about 100,000-feet and going to LEO, defined as ~200-miles up. The flight should last about 10-minutes. '''Fifth Generation System''' Let’s assume graphite ...

... , let us consider the possibilities of placing a payload in a nominally circular orbit 300 miles above the surface of the earth. Compared with a north-south polar orbit (in other ... , of course, by pressurisation of the H.T.P. tank. Taking, for example, the 300-mile circular orbit which we have discussed earlier, calculations based on the increased tankage indicate that ... readily available) could be used to place about 1,000 lb. in orbit at 300 miles. Obviously, these three suggestions are not the only solutions — even within the criterion of not ...

... of each measurement alone. The radar enabled high-resolution measurements of up to 1.9 miles, but with lower accuracy for sensing surface soil moisture. In contrast, the microwave radiometer is more accurate in its measurements but has lower resolution of about 25 miles. By combining the active and passive measurements, SMAP was designed to estimate soil moisture at a resolution of 5.6 miles. The nearly three months of coincident measurements by the two instruments are a first of ...

... was fired. It loosed a cloud of sodium vapor starting at 26 miles and rising with the rocket to 84 miles. The cloud was spectacular in the sunrise and visible for hundreds ... rocket jettisoned and detonated grenades one at a time at altitudes from 24 to 55 miles. Two additional Nike-Cajun rockets were fired in the evening with sodium and grenade experiments ... . A simple satellite plotter costing only a few hundred dollars and accurate to within 10 miles on any orbit was devised by Major William Gamble of the Canadian Defense Research Board ...

... 's Humes recalled. Once past Saturn, Pioneer was to photograph Titan from about 221,000 miles, record its temperature and atmospheric methane, and try to detect "life chemicals"; as no life ... scientists could make detailed analysis. On September 3, Pioneer was already more than a million miles from Saturn, relaying no ill effects from the planet's rings or radiation belts. Early ... loss occurred between spacecraft and station or between Spain and the control center about 40 miles south of San Francisco. A loss between spacecraft and station would be irretrievable: Pioneer had ...

... the debris. The astronauts tracked the balloon's largest piece with radar for almost 20 miles and used special binoculars and an optical sextant to follow the same piece more than 20 miles by watching sunlight reflected off the balloon's aluminum surface. The Indonesian satellite Palapa-B2 ... the Space Shuttle . Propelled by $10 million jet-powered backpacks, they traveled at 4.8 miles a second, although they had no sensation of speed. The two reentered Challenger after 5 ...

... 1 at 12 noon EDT June 1 was 2,095,063,224 miles from earth and 2,170,849,615 miles from the sun, Omni reported. Voyager 2 , after Jupiter and Saturn ... , respectively, on June 1 was 1,499,732,272 miles from earth, 1,593,867,481 miles from the sun, and 187,782,284 miles from Uranus. At 12 noon EDT June 14 ... first spacecraft to leave the solar system, was 3,410,823,980 miles from earth and 3,319,306,400 miles from the sun. (Omni, June 85, 28) May 1985 May June ...

... the atmospheric balloon and a lander, to plunge from a 125-km (78 miles) to a 65-km (40 miles) altitude, where a parachute would deploy. The lander would separate from the balloon at 63 km (39 miles) and head for the surface. The balloon would then inflate and carry its instrument package through the atmosphere at an altitude of 55 km (34 miles) for more than two days. NASA’s Deep Space Network and other stations around the ...

... acceleration that enabled the X-43A to attain an altitude of 111,000 feet (21 miles or 33.8 kilometers). The experimental aircraft flew for nearly 10 seconds at that altitude before descending into the Pacific Ocean as planned, nearly 800 miles (1,287 kilometers) off the coast of California. (John Johnson, “ X-43A Aircraft Sets Speed ... solar-electric propulsion system or ion engine, which made the journey of 52.2 million miles (84 million kilometers) from Earth to the Moon using only 130 pounds (59 kilograms) of ...

... formed into a planet. "After plying the seas of space for more than a billion miles, the Dawn team finally spotted its target," said Carol Raymond, Dawn's deputy principal investigator ... -angle images allowing scientists to produce topographic maps. Dawn will later orbit at approximately 120 miles (200 km) to perform other measurements and obtain closer shots of parts of the surface ... their internal structures. The spacecraft's full odyssey will take it on a 3-billion-mile (5-billion-km) journey, which began with its launch in September 2007. Dawn's mission ...

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