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2025-08-08 19:20本頁(yè)面
【正文】 m Steve Ember. 。 Hubble proved they exist. The Hubble Space Telescope pleted its one millionth scientific observation in July. NASA is building a new space telescope to look even deeper into the beginnings of the universe. And that39。 39。 39。s first chief of astronomy was Nancy Grace Roman. Ms. Roman joined NASA in nieen fiftynine. She led the effort that resulted in the creation of the Hubble Space Telescope. NANCY GRACE ROMAN: Astronomers had been wanting to get observations from above the atmosphere for a long time. Looking through the atmosphere is somewhat like looking through a piece of old, stained glass. The glass has defects in it, so the image is blurred from that. The Hubble telescope orbits about five hundred fifty kilometers above Earth. Ms. Roman says she still remembers the first images that it captured. NANCY GRACE ROMAN: I think the image that to me was most striking was the center of a globular cluster. You could see each star individually, and see their color, and it was just a fantastic sight. The Hubble Space Telescope has helped expand our knowledge of the universe. It helped scientists estimate that the universe began about fourteen billion years ago. Earlier estimates had placed it between ten and twenty billion years old. Ed Weiler says the Hubble telescope also confirmed the existence of black holes. These are extremely dense masses believed to exist at the center of most galaxies. Their gravitational pull is so strong, they absorb light. NASA Roman helped develop The Hubble Space Telescope, a large, spacebased observatory which has revolutionized astronomy by providing unprecedented deep and clear views of the universe. ED WEILER: Black holes were science fiction. 39。mother39。s chief astronomer. Mr. Weiler has worked closely with the Hubble program since nieen seventynine. ED WEILER: The Hubble, when it was launched, represented an increase in capability of other telescopes on the ground by a factor of ten. The last time in human history in astronomy that we leaped a factor of ten, in one step, was when Galileo stopped using his eye and put the first telescope to his eye. VOA J. Taboh Nancy Grace Roman, 86, was NASA39。s the VOA Special English Agriculture Report, written by Jerilyn Watson. For more growing advice, and to learn English, go to . You can also find us on Facebook, Twitter and YouTube at VOA Learning English. I39。 they require oxygen (for the soil) to function properly. So if you keep the soil saturated and there39。s the VOA Special English Education Report. You and read and listen to our reports at 39。ve gathered like 20 instruments. We had some recorders and also an entire drum kit, lap tops and recording software. Many Kenyans attended the activities offered by the group. (MUSIC) Berklee student David Chapman says for some of the Kenyans, it was the first time to see and touch such instruments. DAVID CHAPMAN: Their music classes would just be them reading books about western instruments. Aaron Colverson says music can give someone a sense of power. AARON COLVERSON: When you put music in front of kids, it seems
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