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Topic: Neptune


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In the News (Mon 20 Nov 17)

  
  Neptune
Neptune is the outermost planet of the gas giants.
Neptune was discovered on September 23, 1846 by Johann Gottfried Galle, of the Berlin Observatory, and Louis d'Arrest, an astronomy student, through mathematical predictions made by Urbain Jean Joseph Le Verrier.
Neptune is a dynamic planet with several large, dark spots reminiscent of Jupiter's hurricane-like storms.
www.solarviews.com /eng/neptune.htm   (1695 words)

  
 Neptune - MSN Encarta
Neptune’s core may be small because most of the rock composing the planet remains mixed with the vast ocean that extends upward from the core to the atmosphere.
Neptune has an active atmosphere, with winds and massive storms that may be caused by heat escaping the planet’s interior.
Neptune’s winds, which blow in a latitude direction, are faster in the planet’s polar regions than they are at Neptune’s equator.
encarta.msn.com /encyclopedia_761577112/Neptune_(planet).html   (1656 words)

  
 Neptune
Neptune was first observed by Galle and d'Arrest on 1846 Sept 23 very near to the locations independently predicted by Adams and Le Verrier from calculations based on the observed positions of Jupiter, Saturn and Uranus.
Neptune's blue color is largely the result of absorption of red light by methane in the atmosphere but there is some additional as-yet-unidentified chromophore which gives the clouds their rich blue tint.
Neptune has 13 known moons; 7 small named ones and Triton plus four discovered in 2002 and one discovered in 2003 which have yet to be named.
www.nineplanets.org /neptune.html   (1127 words)

  
 CyberSpace! - Neptune
Neptune, the eighth planet in our solar system, was the first planet whose existence was mathematically calculated before the planet was actually observed.
Neptune and Uranus are considered to be "twin planets" because they are close to the same size and are composed of similar elements.
The climate on Neptune is almost exactly the same as that on Uranus, mainly because of their atmospheres, which are both composed of hydrogen and methane gases.
library.thinkquest.org /12659/solar_system/neptune/index.html   (322 words)

  
 Neptune - Crystalinks
Neptune is the eighth or, occasionally, the ninth planet from the Sun due to Pluto's eccentric orbit, and the outermost gas giant in our solar system.
Had Neptune been moving at its regular/average speed when Galileo first observed it in 1612 and 1613, he would have most likely realized that it was a planet and not a fixed star due to Neptune's relatively rapid normal motion along the ecliptic compared to the extremely slow motion of the fixed stars.
Neptune also resembles Uranus in its magnetosphere, with a magnetic field strongly tilted relative to its rotational axis at 47° and offset at least 0.55 radii (about 13,500 kilometres) from the planet's physical center.
www.crystalinks.com /neptune.html   (3201 words)

  
 NASA - Neptune
Neptune is one of the two planets that cannot be seen without a telescope.
Neptune's axis is not perpendicular (at an angle of 90 degrees) to the planet's path around the sun.
Neptune is surrounded by thick layers of clouds in rapid motion.
www.nasa.gov /worldbook/neptune_worldbook.html   (1112 words)

  
 World Almanac for Kids
The discovery of Neptune was one of the triumphs of mathematical astronomy.
The average distance of Neptune from the sun is 4,498,252,900 km (2,795,084,800 mi), and its equatorial radius is 24,764 km (15,388 mi), or about 3.9 times that of the earth.
Neptune is never visible to the naked eye, but it can be observed in a small telescope as a small, greenish-blue disk without definite surface markings.
www.worldalmanacforkids.com /explore/space/neptune.html   (404 words)

  
 Neptune
Neptune is the outermost planet of the gas giants.
Neptune is a dynamic planet with several large, dark spots reminiscent of Jupiter's hurricane-like storms.
The magnetic field of Neptune, like that of Uranus, is highly tilted at 47 degrees from the rotation axis and offset at least 0.55 radii (about 13,500 kilometers or 8,500 miles) from the physical center.
www.astro.cz /solar/eng/neptune.htm   (1449 words)

  
 Neptune   (Site not responding. Last check: 2007-10-29)
Neptune is the eighth planet from the Sun and the fourth largest.
Neptune's blue color is the result of the absorption of red light by methane in the atmosphere.
Neptune also has a smaller dark spot in the southern hemisphere and a small irregular white cloud that zips around Neptune every 16 hours known as "The Scooter".
library.thinkquest.org /20104/Planets/neptune.htm   (377 words)

  
 ASTRONOMY (NEPTUNE)   (Site not responding. Last check: 2007-10-29)
Neptune, the most distant gas giant planet from the Sun, is so far away that it is only a tiny, blurred image in the 154-cm (60-inch) telescope at the Catalina Observatory.
At this phase in Neptune's sojourn around the Sun, it is summer in the southern hemisphere and there is continuous daylight at the south pole, while the north pole is cloaked in darkness.
Neptune's magnetic field is tilted relative to the planet's spin axis and is not centered at the core.
www.jsc.nasa.gov /er/seh/neptune.html   (2704 words)

  
 Jet Propulsion Laboratory: Planets
Neptune orbits about 30 times as far from the Sun as Earth does.
Most of the time, it is the eighth planet from the Sun, but because of Pluto's odd-shaped orbit, Neptune is actually the farthest out of the nine planets for about 20 years out of every 248 years.
Mathematicians had accurately predicted where Neptune could be discovered, based on its gravitational effect on Uranus.
www.jpl.nasa.gov /solar_system/planets/neptune_index.html   (229 words)

  
 NASA's Solar System Exploration: Planets: Neptune: Kid's Eye View
Neptune is the fourth largest planet in our solar system.
Neptune is named for the Roman god of the sea.
Neptune may be the windiest planet in the solar system.
solarsystem.nasa.gov /planets/profile.cfm?Object=Neptune&Display=Kids   (331 words)

  
 ORRERY: Neptune - ice giant
Neptune is usually the eighth planet from the Sun, but is occasionally further away than Pluto, which has a highly elliptical orbit.
Neptune is the smaller of the four gas giants, just smaller than Uranus, but much more massive.
Neptune was found when astronomers Adams and Leverrier separately calculated the position of a new planet which they thought was altering the orbit of Uranus.
www.harmsy.freeuk.com /neptune.html   (432 words)

  
 The Planet Neptune
Neptune is the fourth and last of the "gas giant" planets in proximity to the Sun.
It is thought that Neptune possesses a significant internal heat source which adds to the vertical convection on the blue planet.
Neptune's thick atmosphere is mostly hydrogen, with smaller amounts of helium and methane.
www.crh.noaa.gov /fsd/astro/neptune.php   (593 words)

  
 Neptune : National Maritime Museum
Neptune is the eighth planet from the Sun and orbits the Sun every 165 years at a mean distance of 30.1 times that of the Earth.
Neptune's atmosphere was seen to have a banded structure similar to that found on the other gas giant planets.
Neptune was shown to have a very active cloud system, possibly even more active than that of Jupiter with wind speeds of up to 2000 km/h.
www.nmm.ac.uk /server/show/conWebDoc.288   (1026 words)

  
 Neptune
Neptune is the eighth planet in average distance from the Sun.
Neptune has two named moons (Triton and Nereid), and six more discovered by the Voyager 2 probe in 1989, of which 1989 N1 (diameter 418 km/260 mi) is larger than Nereid.
Neptune is believed to have a central rocky core covered by a layer of ice.
mysite.wanadoo-members.co.uk /blobrana/database/neptune.html   (737 words)

  
 BBC - Science & Nature - Space - Neptune
Neptune is one of the four 'gas giants' (along with Jupiter, Saturn and Uranus).
Neptune cannot be seen from the Earth with the naked eye.
Neptune has the honour of being the first planet to be discovered on paper before it was actually seen.
www.bbc.co.uk /science/space/solarsystem/neptune/index.shtml   (472 words)

  
 Meet the Neighbours - Neptune
Neptune has a day which is 16.3 hours long, and it takes 163 years for a complete orbit.
Neptune was the first planet to be discovered by mathematics.
Neptune is about one and a half times further out from the Sun than Uranus.
www.abc.net.au /science/space/planets/neptune.htm   (645 words)

  
 Astrology on the Web: Neptune
Neptune, the planet of deception and spiritual enlightenment, rules the oppressed and abandoned: the misfits of society.
Neptune's role in society is often to cloud the issues, making things seem other than they are.
Modern astrologers generally agree that Neptune is well-placed in Pisces and may be said to be the co-ruler of that sign, though Jupiter is definitely the traditional ruler.
www.astrologycom.com /neptune.html   (270 words)

  
 Neptune — Infoplease.com
The atmosphere of Neptune is mainly composed of hydrogen, with helium and traces of methane and ammonia.
Neptune, in Roman religion and mythology - Neptune Neptune, in Roman religion and mythology, god of water.
Neptune, in astronomy - Neptune Neptune, in astronomy, 8th planet from the sun at a mean distance of about 2.8 billion mi...
www.infoplease.com /ipa/A0004483.html   (933 words)

  
 Neptune (Olympian God)
Neptune, in past eras, was known to quarrel with his fellow Olympians to act as the patron of particular Greek cities.
Neptune could also be a very moody sea-god and at times used his powers to create earthquakes, floods and storms to inflict fear and/or punishment on people as revenge.
When Neptune's great-nephew Aeneas, who was the son of his niece, the love-goddess Aphrodite, left war-ravaged Troy and eventually became the ancestor of the Roman peoples, Neptune was worshipped as the prime sea-god by the ancient Romans as he was also by the ancient Greeks who revered him under his original name of Poseidon.
www.marvunapp.com /Appendix/neptunep.htm   (3219 words)

  
 Neptune
Neptune is smaller in diameter but larger in mass than Uranus.
Neptune was first observed by Galle and d'Arrest on 1846 Sept 23 very near to the locations independently predicted by Adams and Le Verrier from calculations based on the observed positions of Jupiter, Saturn and Uranus.
Neptune's magnetic field is off center and at a large angle to its rotation axis.
dept.physics.upenn.edu /nineplanets/neptune.html   (912 words)

  
 Neptune - EnchantedLearning.com
Neptune was the first planet whose existence was predicted mathematically (the planet Uranus's orbit was perturbed by an unknown object which turned our to be another gas giant, Neptune).
This is because it is such a large planet (and the gravitational force a planet exerts upon an object at the planet's surface is proportional to its mass and to the inverse of its radius squared).
At aphelion (the point in Neptune's orbit farthest from the sun) Neptune is 4,546,000,000 km from the sun, at perihelion (the point in Neptune's orbit closest from the sun) Neptune is 4,456,000,000 km from the sun.
www.enchantedlearning.com /subjects/astronomy/planets/neptune   (591 words)

  
 Neptune's Ring System
Evidence for incomplete arcs around Neptune first arose in the mid-1980's, when stellar occultation experiments were found to occasionally show an extra "blink" just before or after the planet occulted the star.
In addition to the narrow Adams Ring 63,000 km from the center of Neptune, the Leverrier Ring is at 53,000 km and the broader, fainter Galle Ring is at 42,000 km.
Neptune images and a Fact Sheet at the National Space Science Data Center.
pds-rings.seti.org /neptune   (370 words)

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