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托福听力练习-科学美国人60秒:宇宙实际年龄更长

2017-03-15 10:13:00来源：科学美国人60秒

点击查看>>科学美国人60秒音频：宇宙实际年龄更长

　　科学美国人60秒听力练习：宇宙实际年龄更长

　　科学美国人60秒英文文本

　　Our universe has long passed for a 13.7-billion-year-old, but it turns out it's really a bit more elderly. So says new data from the European Planck satellite.

　　“Compared to the previous best measurements, the universe is a little older, 13.8 billion years.” U.S. project scientist Charles Lawrence of NASA's Jet Propulsion Laboratory, in a March 21st press briefing.

　　11.jpg“It's expanding a little more slowly. There's more matter, both the kind that we're made of that we can see and the dark kind that we can't see, but that has gravity to pull things around.”

　　The Planck satellite maps the cosmic microwave background, the faint afterglow of the big bang. And that lets cosmologists look back to the very dawn of the universe.

　　“The variations from place to place in the map that Planck has made tell us new things about what happened just 10 nano-nano-nano-nanoseconds after the big bang when, in a gazillion times less time than it takes me to say this, the universe expanded by 100 trillion trillion times.”

　　It's been said that “the universe is not only stranger than we imagine, it is stranger than we can imagine.”

　　中文翻译请点击下一页

本文关键字: 托福听力 科学美国人

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