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Hubble Finds New Neptune Moon

116 点作者 japaget将近 12 年前

6 条评论

mkhaytman将近 12 年前
With Earth-like planets being discovered in far off star systems and HD cameras roving about on Mars, it's easy to forget how much of our own solar system is still an unexplored frontier. It may not be a ground breaking discovery, but the fact that there are Moons we haven't found as of yet, is really exciting to me!
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nostromo将近 12 年前
This little guy has a width less than the length of Manhattan, so I was surprised to hear it being called a moon.<p>But Wikipedia says there isn&#x27;t really a lower limit to the size of a moon -- if it orbits a planet, it&#x27;s a moon. Unless we put it there, in which case it&#x27;s a satellite. <a href="http://en.wikipedia.org/wiki/Natural_satellite#The_definition_of_a_moon" rel="nofollow">http:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Natural_satellite#The_definitio...</a>
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stephengillie将近 12 年前
<i>Many of the moons now seen orbiting the planet probably formed after Triton settled into its unusual retrograde orbit about Neptune.</i><p>Or they were captured out of the Kuiper Belt as well. Maybe Neptune keeps losing and capturing new moons, rotating rocks into and out of the Kuiper Belt.
anusinha将近 12 年前
Really cool.<p>Also possibly of interest: <a href="http://en.wikipedia.org/wiki/Moons_of_Pluto" rel="nofollow">http:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Moons_of_Pluto</a><p>I had no idea Pluto (not a planet) had five moons.
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donohoe将近 12 年前
That&#x27;s no moon...<p>(Only 12 miles!?)
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print将近 12 年前
That&#x27;s no moon!
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