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37001. Lunar Orbiter 5
Lunar Orbiter 5 . ... Lunar Orbiter 5 was designed primarily to photograph smooth areas of the lunar surface for selection and verification of safe landing sites for the Surveyor and Apollo missions. ... Accurate data were acquired from all other experiments throughout the mission. ... A detailed description of the experiment, a bibliography, and indexes of all the available Lunar Orbiter 1 through 5 photos are contained in the report 'Lunar Orbiter Photographic Data,' NSSDC 69-05, June 1969. ...
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Ссылки http://www.arcetri.astro.it/irlab/Astro/solar/eng/orbiter5.htm -- 9.6 Кб -- 15.03.1998
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37002. Saturn's Moon Phoebe
Phoebe . Saturn IX . Phoebe [FEE-bee] is the last of the known satellites of Saturn, at a distance of 12.952 million kilometers (8 million miles). Phoebe orbits Saturn in a retrograde direction (opposite to the direction of the other satellites' orbits) in a plane much closer to the ecliptic than to Saturn's equatorial plane. ... Scientists believe that Phoebe may be a captured asteroid with a composition unmodified since the time it was formed in the outer Solar System . ...
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Ссылки http://www.arcetri.astro.it/irlab/Astro/solar/eng/phoebe.htm -- 6.1 Кб -- 15.03.1998
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37003. Terms and Definitions
... Reflectivity of an object; ratio of reflected light to incident light. albedo feature . ... The point that is directly on the opposite side of the planet; e.g., the Earth's north pole is antipodal to its south pole. aphelion . The point in its orbit where a planet is farthest from the Sun. apoapsis . ... Jovian planet . ... The planets Mars, Jupiter, Saturn, Uranus, Neptune and Pluto are superior planets because their orbits are farther from the Sun than Earth's orbit. synchronous orbit radius . ...
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Ссылки http://www.arcetri.astro.it/irlab/Astro/solar/eng/terms.htm -- 45.4 Кб -- 15.03.1998
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37004. Venusian Impact Craters
... Generally, impact craters have a circular outline, a raised rim, and a depth that is shallow relative to the diameter. The crater is surrounded by ejecta deposits that decrease in thickness outward from the crater rim. ... The Venusian impact crater Danilova is 48 kilometers (30 miles) in diameter. ... The ejecta blanket and the circular rim of a crater are very bright in radar images because both are rough, with many facets oriented perpendicular to the radar illumination. ... Irregular craters . ...
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Ссылки http://www.arcetri.astro.it/irlab/Astro/solar/eng/vencrate.htm -- 28.0 Кб -- 15.03.1998
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37005. Venera 12 Descent Craft
... The Venera 12 descent craft carried instruments designed to study the detailed chemical composition of the atmosphere, the nature of the clouds, and the thermal balance of the atmosphere. Separating from its flight platform on December 21, 1978, it made a soft landing on the surface after a descent time of approximately 1 hour. During this time, it employed aerodynamic braking followed by parachute braking and ending with atmospheric braking. ... Space History . ...
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Ссылки http://www.arcetri.astro.it/irlab/Astro/solar/eng/venera12.htm -- 3.4 Кб -- 15.03.1998
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37006. Venus Introduction
... Views of Venus . ... Venus Image and Animation Index . ... Magellan images of highland regions above 2.5 kilometers (1.5 miles) are unusually bright, characteristic of moist soil. ... This is a global view of the surface of Venus centered at 180 degrees east longitude. ... Gula Mons, a 3 kilometer (1.86 mile) high volcano, is located at approximately 22 degrees north latitude, 359 degrees east longitude. ... The distance between Sif Mons and Gula Mons is approximately 730 kilometers (453 miles). ...
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Ссылки http://www.arcetri.astro.it/irlab/Astro/solar/eng/venus.htm -- 28.6 Кб -- 15.03.1998
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37007. The Voyager Planetary Mission
... Jupiter . ... As originally designed, the Voyagers were to conduct closeup studies of Jupiter and Saturn , Saturn's rings, and the larger moons of the two planets. ... Had the Voyager mission ended after the Jupiter and Saturn flybys alone, it still would have provided the material to rewrite astronomy textbooks. ... Voyager 1 is now leaving the solar system, rising above the ecliptic plane at an angle of about 35 degrees at a rate of about 520 million kilometers (about 320 million miles) a year. ...
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Ссылки http://www.arcetri.astro.it/irlab/Astro/solar/eng/vgrfs.htm -- 31.6 Кб -- 15.03.1998
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37008. Apollo 15 Summary
. Apollo 15 Summary . Mission Profile . Animations . Mountains of the Moon . Moon Cars . The Apollo Lunar Roving Vehicle (LRV) . Landing at Hadley . The Stand-up EVA (SEVA) . Out for a Drive . Hadley Geology . Return to the LM . Drilling Troubles . Getting Out of the Suits . The Second EVA . A Green Boulder on Mt. Hadley Delta . The Genesis Rock . Return to the LM . Penance . The Cost of Drilling . Hadley Rille . Launched: July 26, 1971 . Landed on the Moon: July 30, 1971 . Landing Site: Hadley Rille .
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Ссылки http://www.arcetri.astro.it/irlab/Astro/solar/eng/apo15.htm -- 110.1 Кб -- 15.03.1998
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37009. Jupiter's Moon Carme
Carme . Jupiter XI . Carme [KAR-mee] is the fourteenth known satellite of Jupiter. Carme and Zeus were the parents of Britomartis, a Cretan goddess. Very little is known about Carme. Carme Statistics . ... Mass (Earth = 1) . ... Equatorial radius (km) . ... Equatorial radius (Earth = 1) . ... Mean density (gm/cm^3) . ... Mean distance from Jupiter (km) . ... Rotational period (days) . Orbital period (days) . ... Mean orbital velocity (km/sec) . ... Orbital eccentricity . ...
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Ссылки http://www.arcetri.astro.it/irlab/Astro/solar/eng/carme.htm -- 4.3 Кб -- 15.03.1998
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37010. Saturn's Moon Dione
... Dione's icy surface includes heavily cratered terrain, moderately cratered plains, lightly cratered plains, and whispy material. The heavily cratered terrain has numerous craters greater than 100 kilometers in diameter. ... Much of the heavily cratered terrain is located on the trailing hemisphere , with the less cratered plains area existing on the leading hemisphere . ... Because Dione is relatively small, an impact causing a 35 kilometer (21 mile) crater could have spun the satellite. ...
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Ссылки http://www.arcetri.astro.it/irlab/Astro/solar/eng/dione.htm -- 11.0 Кб -- 15.03.1998
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37011. Deep Space Objects
Deep Space Image Index . ... Cartwheel Galaxy ( GIF , 299K; JPEG , 62K; caption ) . NGC1850 - Tale of Two Clusters ( GIF , 255K; JPEG , 117K; caption ) . Cat's Eye Nebula ( GIF , 113K; TIF , 1M; caption ) . Ring Structure Around Supernova 1987A ( TIF , 2M; caption ) . 30 Doradus Nebula ( GIF , 379K; caption ) . Eta Carinae Star ( GIF , 433K; caption ) . Cygnus Loop Supernova Blast Wave ( TIF , 4M; caption ) . Spiral Galaxy M51 ( TIF , 769K; caption ) . ...
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Ссылки http://www.arcetri.astro.it/irlab/Astro/solar/eng/ds.htm -- 5.2 Кб -- 15.03.1998
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37012. Earth's Interior & Plate Tectonics
Earth's Interior & Plate Tectonics . ... The Earth's Interior . ... Scientists categorize seismic movements into four types of diagnostic waves that travel at speeds ranging from 3 to 15 kilometers (1.9 to 9.4 miles) per second. ... Inner core: 1.7% of the Earth's mass; depth of 5,150-6,370 kilometers (3,219 - 3,981 miles) . ... Lower mantle: 49.2% of Earth's mass; depth of 650-2,890 kilometers (406 -1,806 miles) . ... Upper mantle: 10.3% of Earth's mass; depth of 10-400 kilometers (6 - 250 miles) . ...
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Ссылки http://www.arcetri.astro.it/irlab/Astro/solar/eng/earthint.htm -- 13.9 Кб -- 15.03.1998
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37013. Jupiter's Moon Ganymede
Ganymede . ... Ganymede Statistics . ... Hubble Finds Ozone on Jupiter's Moon Ganymede . ... Like Callisto , Ganymede is most likely composed of a rocky core with a water/ice mantle and a crust of rock and ice. ... Ganymede's mantle is most likely composed of ice and silicates, and its crust is probably a thick layer of water ice. ... Ganymede's surface is rich in water ice and Voyager and Galileo images show features which are evidence of geological and tectonic disruption of the surface in the past. ...
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Ссылки http://www.arcetri.astro.it/irlab/Astro/solar/eng/ganymede.htm -- 14.4 Кб -- 15.03.1998
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37014. Saturn's Moon Helene
Helene . Saturn XII - 1980S6 . Helene was discovered by P. Laques and J. Lecacheus in 1980 through ground based observations. Helene is called a Dione Trojan satellite because it shares the same orbit as Dione at about 60 degrees ahead of its larger companion. ... 1980 . ... Mean density (gm/cm^3) . Mean distance from Saturn (km) . ... Rotational period (days) . Orbital period (days) . ... Mean orbital velocity (km/sec) . ... Credit: Calvin J. Hamilton) . Saturn Dione Rhea . ...
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Ссылки http://www.arcetri.astro.it/irlab/Astro/solar/eng/helene.htm -- 4.9 Кб -- 15.03.1998
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37015. Uranus' Satellite Juliet
Juliet . Uranus XI - 1986U2 . Juliet was named after the tragic heroine in Shakespeare's play Romeo and Juliet . It is the sixth known satellite of Uranus, and it was discovered by Voyager 2 . Juliet Statistics . Discovered by . ... Equatorial radius (km) . ... Equatorial radius (Earth = 1) . ... Mean density (gm/cm^3) . Mean distance from Uranus (km) . ... Rotational period (days) . Orbital period (days) . ... Mean orbital velocity (km/sec) . ... Orbital eccentricity . ...
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Ссылки http://www.arcetri.astro.it/irlab/Astro/solar/eng/juliet.htm -- 4.3 Кб -- 15.03.1998
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37016. Luna 14
Courtesy of NASA's National Space Science Data Center . Launch Date: 1968-04-07 . Launch Site/Country: Tyuratam (Baikonur Cosmodrome), U.S.S.R. Launch Vehicle: Modified SS-6 (Sapwood) with 2nd Generation Upper Stage + Escape Stage . On-orbit dry mass: 1700.00 kg. (3,740 lb.) The Luna 14 spacecraft entered lunar orbit on April 10, 1966. ... This flight was the final flight of the second generation of the Luna series. Space History . ...
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Ссылки http://www.arcetri.astro.it/irlab/Astro/solar/eng/luna14.htm -- 3.4 Кб -- 15.03.1998
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37017. Luna 24
Courtesy of NASA's National Space Science Data Center . Launch Date/Time: 1976-08-09 at 14:04:00 UTC . ... On-orbit dry mass: 4800.00 kg. (10,560 lbs.) The last of the Luna series of spacecraft, the mission of the Luna 24 probe was the third Soviet mission to retrieve lunar ground samples (the first two were returned by Luna 16 and 20). The probe landed in the area known as Mare Crisium (Sea of Crisis). The mission successfully returned the samples to the Earth on August 22, 1976. ...
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Ссылки http://www.arcetri.astro.it/irlab/Astro/solar/eng/luna24.htm -- 3.3 Кб -- 15.03.1998
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37018. Mars Introduction
... The Surface of Mars . ... Mars Atlas . ... All that was revealed was a surface containing many craters and naturally occurring channels but no evidence of artificial canals or flowing water. ... Flight over Valles Marineris . ... If the Martian core is dense (composed of iron) similar to Earth's or SNC meteorites thought to originate from Mars, then the minimum core radius would be about 1300 kilometers. ... This image is a mosaic of the Valles Marineris [VAL-less mar-uh-NAIR-iss] hemisphere of Mars...
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Ссылки http://www.arcetri.astro.it/irlab/Astro/solar/eng/mars.htm -- 30.6 Кб -- 15.03.1998
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37019. Neptune's Moon Naiad
Naiad . Neptune III - 1989N6 . Naiad, the last satellite discovered, is about 54 kilometers (33 miles) in diameter and orbits Neptune every 7 hours and 6 minutes about 23,200 kilometers (14,400 miles) above the clouds. ... Naiad circles the planet in the same direction as Neptune rotates, and remains close to Neptune's equatorial plane. ... Discovered by . ... Mean density (gm/cm^3) . Mean distance from Neptune (km) . ... Rotational period (days) . Orbital period (days) . ...
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Ссылки http://www.arcetri.astro.it/irlab/Astro/solar/eng/naiad.htm -- 4.5 Кб -- 15.03.1998
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37020. Lunar Orbiter 4
Lunar Orbiter 4 . Courtesy of NASA's National Space Science Data Center . ... The Lunar Orbiter 4 spacecraft was designed primarily to photograph smooth areas of the lunar surface for selection and verification of safe landing sites for the Surveyor and Apollo missions. ... This experiment consisted of a dual-lens camera system designed to satisfy the primary mission objective of providing photogaphic information for mapping and for the evaluation of Apollo and Surveyor landing sites. ...
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Ссылки http://www.arcetri.astro.it/irlab/Astro/solar/eng/orbiter4.htm -- 9.0 Кб -- 15.03.1998
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