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In every galaxy scientists looked at, they found evidence for a supermassive black hole. NGC 3115 NGC 3377 NGC 3379 In M31 and M32 In total there is probably 20-30 or so black holes that have been fou
超大质量黑洞
Time again for StoryCorps, traveling the country recording your stories. Last week, we heard remembrances of the Great Depression. Today, we revisit that time with sisters Evelyn Palmour and Doreene McCoy. They were just children when the Depression
2007年NPR美国国家公共电台
[00:00.52] 12.18 Holes in His Mind [00:06.29]Major James Nesmeth had a dream of improving his golf game and he developed a unique method of achieving his goal. [00:14.35]Until he devised this method, he was just your average weekend golfer, shooting
温馨夜读II
迈克尔.杰克逊：Speachless Speachless 无言 Your love is magical, thats how I feel 你的爱是如此的不可思议，这就是给我的感觉 But I have not the words here to explain 我岂能用言辞去形容 Gone is the grace for expressi
迈克尔杰克逊经典歌曲
An ass and an ox，fastened to the same yoke，were draging a waggon．While the ox was pulling with all his might he he broke a horn．The ass swore that he had got no help whatever from his weak companion．Exerting himself in the labour，the ox b
趣味英语
New Data Adds to Understanding of 'Black Holes' WASHINGTON Scientists continue to learn more about black holes in space, places where the pull of gravity is so strong that not even light can escape. Black holes occur after supergiant stars explode in
VOA标准英语2016年(九月)