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A supermassive black hole is quite simply gravity gone mad. An object of such concentrated matter its gravitational pull is insatiable. Nothing can escape it, not even light itself. Anything that gets
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VOICE ONE: This is SCIENCE IN THE NEWS in VOA Special English. Im Bob Doughty. VOICE TWO: Jesse Sullivan was an electrical worker who lost both of his arms while working on power lines And Im Barbara Klein. This week, we will tell about an American
VOA慢速英语2009年（三）月
AS IT IS 2015-09-20 NASAs Astronauts Reach Halfway Point of Year in Space Right now, as you go about your business, two humans are passing above you in outer space. American astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko reached the ha
2015年VOA慢速英语(九)月
VOICE ONE: This is SCIENCE IN THE NEWS in VOA Special English. Im Bob Doughty. VOICE TWO: Jesse Sullivan was an electrical worker who lost both of his arms while working on power lines And Im Barbara Klein. This week, we will tell about an American s
2010年慢速英语(三)月
The Perfect Mess In an interview with Michael McLaughlin published in The New Writers Handbook (2007), Eric Abrahamson, co-author of A Perfect Mess: The Hidden Benefits of Disorder, says Your mess is perfect when it reaches the point at which, if you
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In his book Cosmos, the late scientist Carl Sagan talks about the way in which the earth is regularly struck by material from outer space. These collisions with space debris can be minoras in a shooting star on a summer nightor amazingly destructive,
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