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Март 1998


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    Архив RU.SPACE.NEWS за 11 марта 1998

    Дата: 11 марта 1998 (1998-03-11) От: Alexander Bondugin Тема: Ed Massey Named Voyager Manager Привет всем! Вот, свалилось из Internet... From the "JPL Universe" January 23, 1998 Massey named Voyager manager Ed Massey has been named project manager of JPL's Voyager Interstellar Mission. He replaces George Textor, who retired Dec. 31. Massey is also project manager of the Ulysses mission to the sun. The Ulysses and Voyager missions will be managed under the same office. A JPL employee since 1987, Massey has managed Ulysses since 1996. Prior to his JPL career, he held a number of increasingly responsible positions within the U.S. Air Force, the last of which was director of space test operations for the Air Force's Operational Test and Evaluation Center. An Alabama native, Massey earned a bachelor's degree in electrical engineering from Tuskegee University in 1966, followed by a master's degree in systems management from USC. For his work on project control and administration for Ulysses, Massey received NASA's Exceptional Service Award in 1991. ### Hа сегодня все, пока! =SANA=
    Дата: 11 марта 1998 (1998-03-11) От: Alexander Bondugin Тема: Kids Use Internet To Learn About Airplane Design Привет всем! Вот, свалилось из Internet... Dwayne Brown Headquarters, Washington, DC March 4, 1998 (Phone: 202/358-1726) John Bluck Ames Research Center, Moffett Field, CA (Phone: 650/604-5026) RELEASE: 98-36 KIDS USE INTERNET TO LEARN ABOUT AIRPLANE DESIGN A NASA project called Aero Design Team Online is using the Internet to help students learn about airplane design. Students and the general public can visit a website (http://quest.arc.nasa.gov/aero/) to find out how aeronautical engineers use airplane models, wind tunnels, supercomputers, simulators and other tools during the airplane design cycle. The project continues through May, although plans are underway to extend it into the summer. "We're teaching about airplane design through the lives of people who are doing the work," said Susan Lee of NASA's Ames Research Center, Moffett Field, CA. "For example, we're following a wind tunnel test of a model of a future supersonic airliner." In addition, kids ask questions via e-mail; learn how an airplane flies; see pictures of aircraft; and participate in Internet chats with people from teams that design and test airplanes. During Internet chats, youngsters use computers to converse with mentors by typing questions and reading responses and dialogue via the World Wide Web. Teachers can visit the teachers' "lounge" on the website. Various educational materials including aeronautics lesson plans are in the lounge. The plans list creative ways to bring the Aero Design Team Online project into the classroom. Educators also have Internet chats with other teachers, describing classroom problems and solutions. "NASA is providing the website because the agency has a mandate to help teachers and students understand NASA research in aeronautics. The website gives knowledge to students that they can apply to their studies," said Ames Educational Group Leader Garth Hull. "The Internet gives our engineers an effective tool to interact with audiences we normally would not reach. We hope by using this resource these students will be better prepared to see vocational opportunities and become better informed citizens," he added. Another segment of the on-line project will follow the progress of astronauts training in the largest vertical motion simulator in the world, located at Ames, Lee said. "They are practicing their Shuttle landings with a new simulator program that includes global positioning." The project is one in a suite of online offerings from NASA's Quest Project at URL http://quest.arc.nasa.gov. These interactive projects connect students with NASA employees to inspire them to pursue high-tech careers. -end- Hа сегодня все, пока! =SANA=
    Дата: 11 марта 1998 (1998-03-11) От: Alexander Bondugin Тема: New Planetary Encyclopedia Has Definite JPL Flavor Привет всем! Вот, свалилось из Internet... From the "JPL Universe" February 6, 1998 New planetary encyclopedia has definite JPL flavor By MARK WHALEN JPL scientist Jim Shirley and colleagues have completed a comprehensive reference book that is being noted among the best in its class. The volume, Encyclopedia of Planetary Sciences, is part of publisher Chapman & Hall's "Earth Science" series. It is close to 1,000 pages in length and is packed with almost 500 articles submitted by 214 contributors, bolstered by numerous maps, planetary images, charts and tables. Of note is the fact that more than 30 of those authors are current, former or retired JPL scientists, all of whom have extensive experience in authoring scientific articles for publication. "We included a diversity of viewpoints, and some difference of opinion," said Shirley, the book's co-editor, who works on Galileo's Near Infrared Mapping Spectrometer (NIMS). He noted that separate articles cover all major lunar and planetary missions since the days of JPL's Lunar Orbiter, Ranger and Surveyor missions of the 1960s. Although the book's manuscript was submitted for publication prior to Galileo's Jupiter orbit insertion in late 1995, there are major articles on both the Galileo and Cassini missions. According to Shirley, the difference between his work and prior encyclopedic efforts to chronicle planetary science is the large number of articles. Most other books include only a few dozen articles at most, he said. "We have limited the length of the major articles to about 5,000 words," Shirley said. "This allowed us to provide at least 10 times more content than any previous book that looks at the solar system or planetary science as a whole." He pointed to the book's comprehensive coverage of asteroids, meteorites, fields and particles; processes such as impact cratering and planetary accretion; and of techniques of remote sensing, image processing and celestial mechanics. The standard articles are about 2,000 words in length. A third category in the encyclopedia covers definitions of geological, astronomical, physical and meteorological terms that range up to about 500 words. Also in this category are nearly 100 biographical entries on pioneering scientists. Shirley, who noted with humor that the effort was a "hellishly time-consuming project," wanted to reach a wide readership, not just scientists. For example, he said, "We tried to make the book accessible for a high school student who might wonder how JPL produces such amazing images of planets." The volume has been favorably reviewed in science journals. New Scientist magazine noted that the book "provides comprehensive and concise coverage of the whole gamut of planetary science in a form that will be of great use to professionals, students and interested general readers. "When it comes to the planets, their characteristics, interrelations and environment, this is the book of the decade," declared the review's author. Although the manuscript was completed more than two years ago, Shirley is not overly concerned that the book will rapidly become out of date. "The users of encyclopedia articles need a clear summary of the basic facts, together with a good list of references for further study. The latest interpretations, on the other hand, may become stale with time. Encyclopedia articles should help move the reader rapidly up the learning curve." ### Hа сегодня все, пока! =SANA=
    Дата: 11 марта 1998 (1998-03-11) От: Alexander Bondugin Тема: Cassini Update - March 6, 1998 Привет всем! Вот, свалилось из Internet... CASSINI SIGNIFICANT EVENTS REPORT FOR WEEK ENDING 03/06/98 Spacecraft Status: The Cassini spacecraft is presently traveling at a speed relative to the sun of approximately 138,000 kilometers/hour (~86,000 mph) and has traveled approximately 369 million kilometers (~229 million miles) since launch on October 15, 1997. The most recent Spacecraft status is from the DSN tracking pass on Thursday, 03/05, over Canberra. The Cassini spacecraft is in an excellent state of health and is operating nominally, with the C6 sequence executing onboard. Inertial attitude control is being maintained using the spacecraft's hydrazine thrusters (RCS system). The spacecraft continues to fly in a High Gain Antenna-to-Sun attitude. It will maintain the HGA-to-Sun attitude, except for planned trajectory correction maneuvers, for the first 14 months of flight. Communication with Earth during early cruise is via one of the spacecraft's two low-gain antennas; the antenna selected depends on the relative geometry of the Sun, Earth and the spacecraft. The downlink telemetry rate is presently 40 bps. Spacecraft Activity Summary: From Friday, 02/27, through Monday, 03/02, there were no changes in spacecraft configuration. On Tuesday, 03/03, the Solid State Recorder (SSR) record and playback pointers were reset, according to plan. This housekeeping activity, done approximately weekly, maximizes the amount of time that recorded engineering data is available for playback to the ground should an anomaly occur on the spacecraft. On Wednesday, 03/04, a maintenance activity was performed on the SSR Flight Software Partitions. This activity repairs any SSR double bit errors (DBEs) which have occurred in the code-containing portions of the Flight Software partitions during the preceding period. Telemetry following Wednesday's activity indicated that the three pending DBEs were all in the unused portion of the flight software partitions. The clearing of these (by the partition copy procedure) will be scheduled for an upcoming DSN pass. On Thursday, 03/05, there were no changes in spacecraft configuration. Upcoming events: Events for the week of 03/06 through 03/12 include: clearing of the SSR DBEs mentioned above (to be scheduled), a reset of the SSR pointers (03/10), approval of the C7 sequence (03/11), update of spacecraft mass properties (03/ 12; based on the successful TCM on 2/25), FP log maintenance (03/12), and uplink of C7 Sequence (03/12). The C7 sequence will begin on Sunday, 3/15/98. DSN Coverage: Over the past week Cassini had 8 DSN tracks occurring daily from Friday (02/27) through Thursday (03/02). In the coming week there will be 8 DSN passes. Hа сегодня все, пока! =SANA=
    Дата: 11 марта 1998 (1998-03-11) От: Alexander Bondugin Тема: Sky & Telescope News Bulletin - March 6, 1998 Привет всем! Вот, свалилось из Internet... SKY & TELESCOPE'S NEWS BULLETIN MARCH 6, 1998 WATER ON THE MOON Conjuring up images of lunar bases and copious rocket fuel, scientists announced yesterday that the Lunar Prospector spacecraft has found evidence for large quantities of water on the Moon. While stressing that the numbers remain preliminary, Principal Investigator Alan Binder (Lunar Research Institute) and his colleagues tentatively estimate that several hundred million tons of water are locked up as ice in permanently shadowed regions on both lunar poles. The evidence comes courtesy Lunar Prospector's neutron spectrometer, which tallies neutrons with differing amounts of kinetic energy. Those neutrons are spawned when cosmic-ray particles smash into atoms on the Moon's surface; they then lose energy gradually as they ricochet off other atoms. Once the neutrons slow down a bit, they are particularly susceptible to collisions with hydrogen nuclei (protons). On its numerous polar passes, Lunar Prospector has seen intermediate-energy neutrons drop in number by a few percent. William Feldman (Los Alamos National Laboratory), who designed the spectrometer, cautions that this only proves that excess hydrogen is present on the lunar poles. However, he continues, water is the likeliest compound to contain that hydrogen, given conditions on the Moon. The finding bolsters tantalizing but unconfirmed radar evidence from the Clementine satellite, which orbited the Moon in 1994. Lunar Prospector was launched on January 6th from Kennedy Space Center; shortly thereafter, it entered a two-hour polar orbit 100 kilometers above the Moon's surface. During the 11 remaining months of its nominal year-long mission, it will map the Moon's elemental composition, surface gravity, and magnetic fields. It will also "sniff" for radioactive radon that may issue from the lunar surface during tectonic activity. EUROPAN OCEAN SUPPORT DEEPENS New pictures from the Jupiter-orbiting Galileo spacecraft released on March 2nd have strengthened the belief that Europa may have a global subsurface ocean. The spacecraft made it closest flyby of Europa on December 16, 1997, passing only 200 kilometers above the icy surface, providing the most detailed views Galileo will ever capture. Planetary scientists gathered at Brown University pointed to various surface features that support the notion that tidal flexing of the moon by Jupiter and the other Galilean satellites has warmed the ice to at least a slushy consistency. Telltale signs include a crater with a basin that appears to have been filled in by warm ice, fields of jumbled iceberg-like debris, and smooth ribbons of fresh ice filling fractures. According to James Head (Brown University), "Together, the evidence supports the hypothesis that in Europa's most recent history, liquid or at least partially liquid water existed at shallow depths below the surface of Europa in several different places." COLLINS TO RAISE AXAF The launch of the Advanced X-ray Astrophysics Facility (AXAF) should get a bit of enhanced attention this December. The keener public interest will probably not be for this "Great Observatory's" exceptional capabilities for studying high-energy phenomena in the universe, but because the STS-93 mission aboard Space Shuttle COLUMBIA will be led by astronaut Eileen Collins, who will become the first woman to command a Space Shuttle mission. SLIGHT LUNAR ECLIPSE The Moon skims through the outer fringe of the Earth's shadow (penumbra) the night of March 12-13. Observers may be able to detect a hint of shading on the Moon's southern side from about 3:40 to 5:00 Universal Time March 13th (10:40 p.m. to midnight EST on the evening of March 12th). THIS WEEK'S "SKY AT A GLANCE" Some daily events in the changing sky, from the editors of SKY & TELESCOPE. MARCH 8 -- SUNDAY * Some doorstep astronomy: Sirius, the brightest star in the sky, shines high in the south shortly after dark at this time of year. It's so bright (magnitude -1.4) that it shows through almost any amount of light pollution. MARCH 9 -- MONDAY * More doorstep astronomy: The constellation Orion is to the upper right of Sirius, by about two fist-widths at arm's length. A similar distance to Sirius's upper left, look for Procyon. MARCH 10 -- TUESDAY * Faint Mars is 1 degree to the left of brighter Mercury; look for them very low in twilight, due west. They're to Saturn's lower right. * Regulus shines near the Moon this evening. MARCH 11 -- WEDNESDAY * An early-morning challenge! During the very first light of dawn tomorrow, binocular and telescope users can try spotting Uranus 7 arcminutes south of the orange star 19 Capricorni. They're both magnitude 5.9. MARCH 12 -- THURSDAY * Full Moon, and penumbral lunar eclipse; the Moon skims through the outer fringe (penumbra) of the Earth's shadow. See if you can detect a hint of shading on the Moon's southern side from about 3:40 to 5:00 Universal Time March 13th. (In Eastern Standard Time, that's 10:40 p.m. to midnight on the evening of March 12th.) Mideclipse occurs at 4:20 UT (11:20 p.m. EST), when the Moon's edge is 73 percent of the way across the penumbra. The Moon is visible throughout the Americas and Europe at the time. MARCH 13 -- FRIDAY * Spica shines below the Moon after they rise in midevening. MARCH 14 -- SATURDAY * Look for the Big Dipper in the northeastern sky during the evening this month. It's standing upright on its handle. ============================ THIS WEEK'S PLANET ROUNDUP ============================ MERCURY and MARS are very low in the west as twilight fades. Look for them down to the lower right of Saturn. Mercury is the brighter of the two. VENUS shines brightly in the southeast during dawn. JUPITER is hidden in the glare of sunrise. SATURN shines rather low in the western sky during dusk. URANUS and NEPTUNE are emerging from the glow of sunrise. They're in the background of brilliant Venus. PLUTO, magnitude 13.8, is near the Ophiuchus-Scorpius border in the south-southeast before dawn. (All descriptions that relate to the horizon or zenith are written for the world's midnorthern latitudes. Descriptions that also depend on longitude are for North America. Eastern Standard Time, EST, equals Universal Time minus 5 hours.) More details, sky maps, and news of other celestial events appear each month in SKY & TELESCOPE, the essential magazine of astronomy. See our Web site at http://www.skypub.com/. Clear skies! SKY & TELESCOPE, P.O. Box 9111, Belmont, MA 02178 * 617-864-7360 (voice) Copyright 1998 Sky Publishing Corporation. S&T's Weekly News Bulletin and Sky at a Glance stargazing calendar are provided as a service to the astronomical community by the editors of SKY & TELESCOPE magazine. Widespread electronic distribution is encouraged as long as these paragraphs are included. But the text of the bulletin and calendar may not be published in any other form without permission from Sky Publishing (contact permissions@skypub.com or phone 617-864-7360). Illustrated versions, including active links to related Internet resources, are available via SKY Online on the World Wide Web at http://www.skypub.com/. In response to numerous requests, and in cooperation with the Astronomical League (http://www.mcs.net/~bstevens/al/) and the American Association of Amateur Astronomers (http://www.corvus.com/), S&T's Weekly News Bulletin and Sky at a Glance are available via electronic mailing list too. For a free subscription, send e-mail to skyline@gs1.revnet.com and put the word "join" on the first line of the body of the message. To unsubscribe, send e-mail to skyline@gs1.revnet.com and put the word "unjoin" on the first line of the body of the message. SKY & TELESCOPE, the Essential Magazine of Astronomy, is read by more than 200,000 enthusiasts each month. It is available on newsstands worldwide. For subscription information, or for a free copy of our catalog of fine astronomy books and products, please contact Sky Publishing Corp., P.O. Box 9111, Belmont, MA 02178-9111, U.S.A. Phone: 800-253-0245 (U.S. and Canada); 617-864-7360 (International). Fax: 617-864-6117. E-mail: custserv@skypub.com. SKY Online: http://www.skypub.com/. Clear skies! Hа сегодня все, пока! =SANA=

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