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| Voyager 2's Neptune footage from space 1989 |
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| YouTube |
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In 1989, Voyager 2 became the first spacecraft to observe the planet Neptune. Passing about 4950 km above Neptune's north pole, Voyager 2 made its closest
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| KurdstanPlanetarium |
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Exploration of Planet Neptune
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| simulated voyage over the surface of Neptune's large moon Triton |
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| mmtheory |
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This simulated voyage over the surface of Neptune's large moon Triton was produced using topographic maps derived from images acquired by NASA's Voyager spacecraft during its August 1989 flyby, 20 years ago this week. Triton was the last solid object visited by the Voyager 2 spacecraft on its epic 10-year tour of the outer solar system. Voyager mapped only the hemisphere that faces Neptune, but revealed a very young surface scarred by rising blobs of ice (diapirs), faults, and volcanic pits and lava flows composed of water and other ices. The video begins near the western edge of this hemisphere with an approach over cantaloupe terrain and two large smooth walled plains. The video tracks due east for roughly 1500 kilometers over a large province of volcanic pits, calderas and smooth plains. As can be seen in this video, Triton is locally very rugged (with pits and mounds that are typically few hundred meters [several hundred feet] high), but has no large mountains or deep basins and regional relief is low. The lack of large topographic features is a consequence of Triton's high internal heat and the low strength of most ices. The video was produced by using a new topographic map of Triton, combined with a 1.65-kilometer (1 mile) resolution image mosaic. Topographic mapping was based on shape-from-shading analysis of the original Voyager images. Vertical relief has been exaggerated by a factor of about 25 to aid interpretation. The raw data from which this product was <b>...</b>
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| KurdstanPlanetarium |
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Neptune is the eighth planet from the Sun in our Solar System. Named for the Roman god of the sea, it is the fourth-largest planet by diameter and the third-largest by mass. Neptune is 17 times the mass of Earth and is slightly more massive than its near-twin Uranus, which is 15 Earth masses and not as dense. On average, Neptune orbits the Sun at a distance of 30.1 AU, approximately 30 times the Earth-Sun distance. Its astronomical symbol is , a stylized version of the god Neptune's trident. Discovered on September 23, 1846, Neptune was the first planet found by mathematical prediction rather than by empirical observation. Unexpected changes in the orbit of Uranus led Alexis Bouvard to deduce that its orbit was subject to gravitational perturbation by an unknown planet. Neptune was subsequently observed by Johann Galle within a degree of the position predicted by Urbain Le Verrier, and its largest moon, Triton, was discovered shortly thereafter, though none of the planet's remaining 12 moons were located telescopically until the 20th century. Neptune has been visited by only one spacecraft, Voyager 2, which flew by the planet on August 25, 1989. Neptune has 13 known moons. The largest by far is Triton, discovered by William Lassell just 17 days after the discovery of Neptune itself. It took about one hundred years to discover the second natural satellite, Nereid. Triton is massive enough to have achieved hydrostatic equilibrium, and would be considered a dwarf planet if <b>...</b>
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| rfoshaug |
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In 1977, NASA launched two small spacecraft called Voyager 1 and Voyager 2. Weighing only 800 kgs each, they collected a wealth of scientific data and thousands of photographs of the four giant planets in our Solar System. After visiting Jupiter and Saturn, Voyager 1's trajectory left the ecliptic plane in order to photograph Saturn's moon Titan. This meant that Voyager 1 would not visit any other planets. However, Voyager 2 continued on to visit Uranus and Neptune. Still today, Voyager 2 is the only spacecraft to have visited these two "ice giants" and their moons. This music is dedicated to the two Voyager spacecraft and to the people who made them possible. Instruments used: - Korg M3 music workstation with Radias expansion - Korg Radias synthesizer For high-quality audio-only versions of all my music, visit: www.soundclick.com Video by NASA Music by Rune Foshaug All rights reserved. Enjoy. :-)
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| NASA Flyby of Neptune moon - Triton |
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| WVsonofliberty |
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This simulated voyage over the surface of Neptune's large moon Triton was produced using topographic maps derived from images acquired by NASA's Voyager spacecraft during its August 1989 flyby, 20 years ago this week. Triton was the last solid object visited by the Voyager 2 spacecraft on its epic 10-year tour of the outer solar system. Voyager mapped only the hemisphere that faces Neptune, but revealed a very young surface scarred by rising blobs of ice (diapirs), faults, and volcanic pits and lava flows composed of water and other ices. The video begins near the western edge of this hemisphere with an approach over cantaloupe terrain and two large smooth walled plains. The video tracks due east for roughly 1500 kilometers over a large province of volcanic pits, calderas and smooth plains. As can be seen in this video, Triton is locally very rugged (with pits and mounds that are typically few hundred meters [several hundred feet] high), but has no large mountains or deep basins and regional relief is low. The lack of large topographic features is a consequence of Triton's high internal heat and the low strength of most ices. The video was produced by using a new topographic map of Triton, combined with a 1.65-kilometer (1 mile) resolution image mosaic. Topographic mapping was based on shape-from-shading analysis of the original Voyager images. Vertical relief has been exaggerated by a factor of about 25 to aid interpretation. The raw data from which this product was <b>...</b>
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| Laser Pumped Flying Saucer Spacecraft (The future?) |
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| TheUFOeffect |
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propulsion using high intensity lasers, this is more realistic possibility than wasting thousands of gallons of fuel for 1 launch. laserd are easy to create powerful using small to large step up transformers. A step up transformer increases the voltage of an alternating current. you can carry loads more with the same amount of energy as the rocket produces or the same load with a lot less energy than the rocket uses.
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| Neptune & Triton - A match made in heaven |
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| AstroRadar |
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Video with images of Neptune and its moon Triton, most of them taken by the Voyager 2 robotic spacecraft, courtesy from NASA; images of the weather changes in Neptune taken by the Hubble Space Telescope, courtesy from NASA & ESA; Artist's impression animation by L. Calçada and the European Southern Observatory (ESO), releasedunder an Attribution-Unported 3.0 Creative Commons License. Music by SpatzAttack, featuring the song "Spring Waltz", from the album Project5, released under an Attribution, Non-commercial; Share-alike 3.0 Creative Commons License. Related article (ENGLISH): astroradar.blogspot.com ArtÃculo relacionado (ESPAÑOL): radarastro.blogspot.com ATTENTION: THIS VIDEO IS RELEASED UNDER AN ATTRIBUTION, NON-COMMERCIAL, SHARE-ALIKE, 3.0 CREATIVE COMMONS LICENSE.
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| neptune - The blue planet |
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| WikiMotion |
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Neptune is the eighth and outermost-known planet from the Sun in the Solar System. Named for the Roman god of the sea, it is the fourth-largest planet by diameter and the third-largest by mass. Neptune is 17 times the mass of Earth and is slightly more massive than its near-twin Uranus, which is 15 Earth masses and not as dense.[12] On average, Neptune orbits the Sun at a distance of 30.1 AU, approximately 30 times the Earth-Sun distance. Its astronomical symbol is , a stylized version of the god Neptune's trident. Discovered on September 23, 1846,Neptune was the first planet found by mathematical prediction rather than by empirical observation. Unexpected changes in the orbit of Uranus led astronomers to deduce that its orbit was subject to gravitational perturbation by an unknown planet. Neptune was subsequently found within a degree of its predicted position, and its largest moon, Triton, was discovered shortly thereafter, though none of the planet's remaining 12 moons was located telescopically until the 20th century. Neptune has been visited by only one spacecraft, Voyager 2, which flew by the planet on August 25, 1989. Neptune is similar in composition to Uranus, and both have compositions which differ from those of the larger gas giants Jupiter and Saturn. Neptune's atmosphere, while similar to Jupiter's and Saturn's in that it is composed primarily of hydrogen and helium, along with traces of hydrocarbons and possibly nitrogen, contains a higher proportion of <b>...</b>
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| Grand Explorations: Voyager 2 - Orbiter Space Flight Simulator |
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| rseferino |
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The Voyager 2 spacecraft is an unmanned interplanetary space probe launched on August 20, 1977. Identical in form to its sister Voyager program craft Voyager 1, Voyager 2 followed a slower trajectory that allowed it to be kept in the ecliptic (the plane of the Solar System) so that it could be sent to Uranus and Neptune by means of gravity assist during the 1981 encounter at Saturn. Because of this trajectory, Voyager 2 could not see the moon Titan up close as its twin had, but the probe did become the first and only spacecraft to travel to Uranus and Neptune, thus completing the Planetary Grand Tour, a rare geometric arrangement of the outer planets that only occurs once every 176 years. The closest approach to Jupiter occurred on July 9, 1979. It came within 570000 km (350000 miles) of the planet's cloud tops. It discovered a few rings around Jupiter, as well as volcanic activity on the moon Io. The closest approach to Saturn occurred on August 26, 1981. The closest approach to Uranus occurred on January 24, 1986, where it came within 81500 kilometers (50600 miles) of the planet's cloud tops. Voyager 2 discovered 10 previously unknown moons; studied the planet's unique atmosphere, caused by its axial tilt of 97.8°; and examined its ring system. The closest approach to Neptune occurred on August 25, 1989. Since this was the last major planet Voyager 2 could visit, it was decided to make a close flyby of the moon Triton, regardless of the consequences to the trajectory <b>...</b>
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