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asteroid    音标拼音: ['æstɚ,ɔɪd]
n. 小游星,小行星,海盘车
a. 星状的

小游星,小行星,海盘车星状的

asteroid
adj 1: shaped like a star [synonym: {asteroid}, {star-shaped}]
n 1: any of numerous small celestial bodies composed of rock and
metal that move around the sun (mainly between the orbits
of Mars and Jupiter)

Asteroid \As"ter*oid\, n. [Gr. ? starlike, starry; 'asth`r star
e'i^dos form: cf. F. ast['e]ro["i]de. See {Aster}.]
A starlike body; esp. one of the numerous small planets whose
orbits lie between those of Mars and Jupiter; -- called also
{planetoids} and {minor planets}.
[1913 Webster]


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  • Asteroid - Wikipedia
    An asteroid is a minor planet —an object larger than a meteoroid that is neither a planet nor an identified comet —that orbits within the inner Solar System or is co-orbital with Jupiter (Trojan asteroids)
  • NASA tracking two house-sized asteroids approaching Earth today
    NASA is tracking two house-sized asteroids zipping toward Earth today as fast as around 20,500 miles per hour One asteroid, known as "2025 VW," is projected to make its closest approach at about
  • Asteroid Facts - Science@NASA
    Asteroids, sometimes called minor planets, are rocky remnants left over from the formation of our solar system about 4 6 billion years ago For the most up to date count of asteroids in our solar system please visit NASA JPL's Solar System Dynamics website
  • An asteroid near Earth could become a temporary moon, then a . . . - Mashable
    Asteroid 2022 RD2 could become one of the few near-Earth objects to shift from a mini moon to a crash risk in a single lifetime
  • Asteroid | Definition, Size, Facts | Britannica
    Asteroid, any of a host of small bodies, about 1,000 km (600 miles) or less in diameter, that orbit the Sun primarily between the orbits of Mars and Jupiter in a nearly flat ring called the asteroid belt
  • Two Large Bus-Sized Asteroids To Pass Earth This Week
    NASA is monitoring two bus-sized asteroids passing Earth this week at safe distances Asteroid 2025 VP1 will pass about 361,000 miles from Earth traveling 18,300 mph on Tuesday Asteroid 2025 VC4
  • Is a deadly asteroid about to hit Earth? Meet the man who can tell you
    When an asteroid threatens Earth, astronomers use a rating called the Torino scale to communicate the risk Richard Binzel, who invented the scale, tells New Scientist about his 50-year career in
  • Shooting for the Stars: MSU’s Gout makes asteroid discovery first for . . .
    The discovery was confirmed by the Minor Planet Center, the world’s official authority for verifying new asteroid findings and operated by the Smithsonian Astrophysical Observatory After confirmation, Gout proposed a permanent name to the International Astronomical Union, or IAU, which oversees the naming of celestial bodies
  • ESA - 40 000 near-Earth asteroids discovered!
    Astronomers recently discovered the 40 000th near-Earth asteroid! These space rocks range from a few metres to a few kilometres in size and are on orbits that bring them relatively close to Earth Each new discovery is both a reminder of our planet’s vulnerability and a testament to how far the field of planetary defence has advanced in just a few decades nbsp;
  • Clemson astrophysicists tell us about asteroids and whether we need to . . .
    Asteroids can give scientists key insights into the formation of our solar system and the Milky Way They contain materials that predate the formation of our solar system Earlier this year, a “city killer” asteroid made major headlines for its slim chance of striking Earth in 2032





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