听写
Astronomers today Tuesday announced the discovery of another planet orbiting a distant star making it the most crowded planetary system outside our rounown.More than 260 planets have been identified outside the  our solar system,the most recently discovery episode planetdiscovered exoplanet as recallthey’re called,orbits a star of in the constilation constellation cancer.According to Jeff MGeoff Marcy of the University of California,one of the authors of the a new paper announcing the discovery,astronomers already knew the star had 4 planets."We've been observing a sun-like star called 55 concretCancri,star 55 in the constilation constellation cancer,for 19 years.And we watch warbal the wobbleof this star as it’s yanked on by the planets orbiting it,and we're just now announcing the discovery of the 5th planets,the first planetary system with 5 full planets orbiting the a sun-like star."Our solar system has 8 planets.Astronomers estimate the newly-found planets is about 55 45 times more mansivemassive than Earth,and has a year lasting 260 earth days.Lead author Debra Fischer says the planet may resymbolresembleSaturSaturn in some ways."This planet,we think,is likely to have a fairly substantial atmosphere."

生词
constellation 星座；星群
wobble (陀螺、人等)摇摆，摆动，摇晃
yank 〔美口〕猛拉，使劲拉。

翻译
天文学家星期二公布，他们发现了一颗遥远恒星的新卫星，这一发现使这它成为太阳系外卫星最多的恒星系统。太阳系外有260多颗行星，最近发现的被成为“外行星”的行星围绕巨蟹座的一颗恒星运动。加州大学的GM是公布新发现的论文作者之一，他说天文学家以前知道这颗恒星有4颗卫星。“我们已经观察这颗55Cancri——巨蟹座的55号恒星19年了。我们观测到这颗恒星被其环绕的行星影响而摇动，于是我们公布了第五颗行星的发现，这是首次发现5个完整的卫星环绕类日恒星的行星系统。”太阳系有8颗行星。天文学家估计，新发现的这颗行星大约比地球大45倍，一年有260地球日。第一作者DF说这颗行星在某些方面可能和土星类似。“我们认为这颗行星可能有一个物质大气层。”

总结
听写的时候好多没写出来，校对了一遍以后发现错的也不多，真汗，看这个题目的时候还以为要错一片……今天的播音员不错。