What is the color of the universe? Astronomers did not answer this question until two months ago. This was when two American astronomers reported on their study of all the light in the universe. They said that the universe would appear to the human eye to be a light greenish color, called turquoise(青绿色). Karl Glazebrook and Ivan Baldry of Johns Hopkins University in Baltimore, Maryland, reported their findings in January. They presented research at a meeting of the American Astronomical Society. They said that finding the color of the universe was not part of their more serious scientific research. They did it for fun. However, earlier this month, the scientists admitted to ma king a mistake. They said their finding was much more colorful than it should have been. They now say the light from our universe is closer to white. It is more like a milky or creamy white color. The scientists gave a nu mber to each of the colors of the different star systems. Then they added the numbers together and found the average measurement. The scientists used this average to identify the color of the universe. They said it was a very pretty light green or turquoise color. They called it “cosmic (宇宙的) spectrum (光谱) green.” Many newspapers and television stations reported their finding. Other scient ists and color engineers attempted to reproduce the result. Mark Fairchild of the Rochester Institute of Technology in New York was the first person to identify a mistake. He discovered a mistake in the computer software program used by the Johns Hopkins scientists. When the mistake was corrected, the results changed. The new color of the universe is much less colorful. It is very close to white. The scientists apologized for the mistake. They are now working with the Rochester Institute of Technology to produce more images regarding the color of the universe. 48. Why did the scientists do the research? A. They wanted to win a Nobel Prize.     B. It’s required by the government. C. They did it just for fun.              D. It’s part of their research. 49. We can infer that the passage was probably written in _______. A. January     B. February    C. May        D. March 50. According to the passage, which of the following statements is TRUE? A. None of the researches done by scientists is right. B. Scientists sometimes may make mistakes in their work. C. The color of the universe is light greenish. D. Mark Fairchild apologized for his mistake about the color of universe.