Supermassive Black Holes 超大质量黑洞 - 5

By measuring how fast these stars were moving, he could prove if there really was a black hole at the center of an active galaxy. I picked a galaxy nearby which is called NGC 1068, an active galaxy, w

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2006年VOA标准英语-Mass Transit Companies Moving to Hybrid Bu

By Mil Arcega Washington, DC 28 April 2006 watch Mass Transit report Metrobus powered by hybrid electric technology Bus companies in the United States are reporting an increase in ridership as high fu

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学个词 Learn a Word-VOA英语教学 3119 high resolution

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英语听力：2013-11-13 地平线：黑洞吞噬—24

The X-ray image revealed how the black hole at the heart of the galaxy was firing unimaginable amounts of radiation into surrounding space and with extraordinary consequences. We could see what was going on at the centre and we could start to underst

英语听力：2013-11-08 地平线：黑洞吞噬—22

Was there any connection between the two? What Magorian discovered was completed unexpected. The relationship that we find was essentially that the bigger the galaxy, the bigger the black hole. That's in its broad terms. If you want to be a bit more

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VOA常速英语2008年-Pope Ends US Visit With Mass at Yankee Stadium

By Barbara Schoetzau New York 20 April 2008 Pope Benedict XVI ended his six-day visit to the United States with a jubilant mass at the 57,000-seat Yankee Stadium. From VOA's New York Bureau, correspondent Barbara Schoetzau reports the leader of the w

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