Centaurus 人马座
Centaurus A 人马A星系
Centaurus A (also known as NGC 5128) is a lenticular galaxy about 14 million light-years away in the constellation Centaurus. It is one of the closest radio galaxies to Earth, so its active galactic nucleus has been extensively studied by professional astronomers.[3] The galaxy is also the fifth brightest in the sky,[3] making it an ideal amateur astronomy target,[4] although the galaxy is only visible from low northern latitudes and the southern hemisphere.
http://en.wikipedia.org/wiki/NGC_5128
Centaurus A 人马A星系
Centaurus A (also known as NGC 5128) is a lenticular galaxy about 14 million light-years away in the constellation Centaurus. It is one of the closest radio galaxies to Earth, so its active galactic nucleus has been extensively studied by professional astronomers.[3] The galaxy is also the fifth brightest in the sky,[3] making it an ideal amateur astronomy target,[4] although the galaxy is only visible from low northern latitudes and the southern hemisphere.
http://en.wikipedia.org/wiki/NGC_5128
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