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 Neptune ['nɛptjun]   添加此单词到默认生词本
n. 海王星



    neptune
    [ noun ]
    1. (Roman mythology) god of the sea; counterpart of Greek Poseidon

      2. <noun.person>
    2. a giant planet with a ring of ice particles; the 8th planet from the sun is the most remote of the gas giants

      3. <noun.object>
      the existence of Neptune was predicted from perturbations in the orbit of Uranus and it was then identified in 1846


    Neptune \Nep"tune\, prop. n. [L. Neptunus.]
    1. (Rom. Myth.) The son of Saturn and Ops, the god of the
    waters, especially of the sea. He is represented as
    bearing a trident for a scepter.

    2. (Astron.) The remotest major planet of our solar system,
    discovered -- as a result of the computations of
    Leverrier, of Paris -- by Galle, of Berlin, September 23,
    1846. It is classed as a gas giant, and has a radius of
    22,716 km and an estimated mass of 1.027 x 10^{26} kg,
    with an average density of 2.27 g/cc. Its mean distance
    from the sun is about 5,000,000,000 km (3,106,856,000
    miles), and its period of revolution is about 164.78
    years.
    [1913 Webster +PJC]

    {Neptune powder}, an explosive containing nitroglycerin, --
    used in blasting.

    {Neptune's cup} (Zo["o]l.), a very large, cup-shaped, marine
    sponge ({Thalassema Neptuni}).

    1. The existence of Neptune's dark spot is mysterious because scientists didn't think the planet had enough heat to drive fierce winds, said Ingersoll.
    2. Because of uncertainties about the size of the two bodies and the strength of their gravitational fields, there is an uncertainty of about 20 miles in the distance to Neptune and 120 miles in the distance to Triton, Cesarone said.
    3. That's about the speed of sound in Neptune's atmosphere.
    4. Photos of Neptune taken by Voyager 2 this week will be appearing on television sets in homes around the country during the flyby.
    5. In 1846, two people are credited with the discovery of Neptune, the eighth, the English astronomer John C. Adams and the French mathematician Urbain J.J. Leverrier.
    6. Voyager 2 encountered Saturn in 1981, Uranus in 1986 and will fly about 3,000 miles above Neptune's north pole cloudtops at 9 p.m. PDT Aug. 24.
    7. As Voyager gets nearer to Neptune, cable television stations will carry live NASA broadcasts of photographs from the planet.
    8. The bands orbit Neptune's equator, as do its narrow rings that were discovered by Voyager earlier.
    9. Voyager project scientist Edward Stone has said Voyager may discover 50 to 100 partial rings orbiting Neptune.
    10. They believe Triton, one of Neptune's two known moons which the spacecraft also will fly by, has methane and water ices on its surface, and possibly lakes or an ocean of liquid nitrogen.
    11. Confirmation of the first active volcano was announced Oct. 2 after scientists analyzed photos Voyager 2 snapped during its Aug. 24-25 flight past Neptune and Triton.
    12. Today it was 2.67 billion miles from Earth and 42.8 million miles from Neptune, speeding at 42,200 mph toward its Aug. 24 close encounter with the solar system's fourth-largest planet.
    13. Voyager 2's flight past Neptune last week leaves Pluto the only planet unvisited by a spacecraft from Earth.
    14. Today, Voyager was 2.74 billion miles from Earth and 5.01 million miles from Neptune, speeding toward the giant gas planet at 42,251 mph.
    15. The spacecraft discovered six moons at Neptune, bringing the total to eight, and found several rings of debris orbiting the planet, which is 30 times farther from the sun than Earth.
    16. "Early analysis indicates Neptune's magnetic field is of an intensity similar to the fields of Earth and Uranus," NASA said.
    17. A magnetic field should trap a radiation belt around Neptune similar to Earth's Van Allen belts.
    18. "I had gotten sort of discouraged from the Uranus encounter because Uranus was such a bland place," Ingersoll said Monday. "So I'm happy to see such action on Neptune." The top Voyager scientist was similarly excited.
    19. Coffey said Neptune agreed to cooperate with U.S. authorities and arranged a meeting the next day with Leon at a fast-food restaurant.
    20. Similar nuclear generators have provided electrical power on 22 previous U.S. space flights, including the six manned Apollo moon missions and the Voyager 2 probe, which recently sent back pictures of the planet Neptune.
    21. NASA calculated Voyager's position during the Neptune flyby as nearly 2.75 billion miles from Earth.
    22. If Voyager confirms that Neptune has a magnetic field, the planet also may have an aurora like Earth's, and a mysterious ultraviolet "electroglow."
    23. Unlike Jupiter, Saturn and Neptune, Uranus lacks enough internal heat to create big storms, Stone said.
    24. That suggests it may have been a giant comet that smacked into some other moon of Neptune, then became trapped into orbit around the planet.
    25. Jupiter's radiation belts damaged some of Voyager's equipment; Haynes doubts similar problems at Neptune.
    26. Neptune Resources Corp. said it plans to spend 83.5 million Canadian dollars ($63.7 million) to develop a gold mine in Canada's Northwest Territories.
    27. Voyager observed winds on Uranus similar to those now being seen on Neptune, but without the turbulence.
    28. For space scientists, the Neptune fly-by is a time of great excitement, all-nighters, scientific breakthroughs, heady attention by the press and frayed tempers.
    29. Murrill said Voyager 2 is 414.7 million miles from Neptune, one of the solar system's giant, gaseous outer planets.
    30. Flight engineers also reported that data shows Neptune's gravitational attraction has slightly but detectably accelerated Voyager.
    Neptune
    Neptune girdle
    Neptune powder
    Neptune's rings
    Neptunea
    Neptunea cumingi
    Neptunea tabulata
    Neptunes sheep
    neptunia
    neptunian
    Neptunian satellite
    Neptunian satellites
    neptunian theory
    neptunianism
    neptunic acid
    neptunic rock
    neptunic rock(s)
    neptunism
    Neptunist
    neptunite
    neptunium
    neptunium 237
    neptunium additive alloy
    neptunium alkoxide
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    neptunium amalgam
    neptunium analyzer
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    neptunium boride
    neptunium carbide
    neptunium carbonate
    neptunium chloride
    neptunium complex
    neptunium compound
    neptunium decay series
    neptunium dioxide
    neptunium ethoxide
    neptunium fluoride
    neptunium hydride
    neptunium hydroxide
    neptunium ion
    neptunium isotope
    neptunium nitrate
    neptunium oxalate
    neptunium oxide
    neptunium oxide-sulfide
    neptunium oxyfluoride
    neptunium phosphate
    neptunium protoxide-o...
    neptunium pyrophosphate
    neptunium series
    neptunium silicide
    neptunium tetrachloride
    neptunium tetraethoxide
    neptunium tetramethoxide
    neptunoyl
    neptunyl
    neptunyl acetate
    neptunyl compound
    neptunyl fluoride
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