NASA's Galaxy Evolution Explorer found evidence that black holes — once they grow to a critical size — stifle the formation of new stars in elliptical galaxies.

太空总署的星系演变探测者发现了黑洞存在的证据：一旦其达到一个临界规模，椭圆形星系中的新星形成便会被扼杀。

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The image was composed from observations made by the Hubble Space Telescope's Advanced Camera for Surveys, NASA's Spitzer Space Telescope, and the Galaxy Evolution Explorer (GALEX).

这张照片是根据哈勃太空望远镜先进测绘照相机、NASA的斯必泽太空望远镜以及星系演化探测器(GALEX)的观测合成的。

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